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Papagiannis D, Thireos E, Mariolis A, Katsioulis A, Lampropoulos IC, Tsiaousi I, Gartzonika K, Malliaraki N, Malli F, Rouka EC, Marinos G, Symvoulakis EK, Rachiotis G, Gourgoulianis KI. Diphtheria and Tetanus Immunity Status among Greek Adults: Results from a Nationwide Seroprevalence Study. Vaccines (Basel) 2024; 12:378. [PMID: 38675760 PMCID: PMC11055123 DOI: 10.3390/vaccines12040378] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2024] [Revised: 03/27/2024] [Accepted: 03/28/2024] [Indexed: 04/28/2024] Open
Abstract
Diphtheria and tetanus could lead to serious morbidity. We aimed to evaluate immunity levels by measuring specific IgG antibodies for diphtheria and tetanus in serum samples from a nationally expanded sample of the Greek population. A geographically stratified sampling approach based on regional units (NUTS level 2) was applied by considering variables such as age group (30-80+) and sex. In total, 1201 persons (47.7% males and 52.3% females) participated in the survey. Bivariate analysis revealed a negative relationship between diphtheria and tetanus median antibody titers and age. The overall seropositivity rate for diphtheria IgG antibodies (≥0.10 IU/mL) was estimated at 31.5%. Regarding tetanus, the total seropositivity rate was estimated at 59.5% (tetanus IgG antibodies ≥0.10 IU/mL). Logistic regression analysis indicated that age groups <40 years and 40-59 years were independently associated with tetanus seropositivity. Logistic regression also revealed that male sex and being aged 60-69 years were independent risk factors for diphtheria-related seropositivity. Lastly, being resident of some regions was an independent risk factor for both diphtheria- and tetanus-related seropositivity. The present study shows that Greek adults are still not completely immune to diphtheria and tetanus. It is likely possible to achieve optimal immunization coverage by implementing serviceable public health initiatives after comprehending real community needs.
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Affiliation(s)
- Dimitrios Papagiannis
- Public Health & Vaccines Laboratory, Faculty of Nursing, School of Health Sciences, University of Thessaly, 41110 Larissa, Greece; (A.K.); (E.C.R.)
| | - Eleftherios Thireos
- National Health System of Greece, Primary Health Center of Vari, 16672 Athens, Greece;
| | - Anargiros Mariolis
- National Health System of Greece, Primary Health Center, 23062 Areopolis, Greece;
| | - Antonios Katsioulis
- Public Health & Vaccines Laboratory, Faculty of Nursing, School of Health Sciences, University of Thessaly, 41110 Larissa, Greece; (A.K.); (E.C.R.)
| | - Ioannis Ch. Lampropoulos
- Respiratory Disorders Lab, Faculty of Nursing, University of Thessaly, 41110 Larissa, Greece; (I.C.L.); (F.M.)
| | - Ioanna Tsiaousi
- Private Primary Health Sector, Queen Sophia Avenue 123, 11521 Athens, Greece;
| | - Kostantina Gartzonika
- Microbiology Department, Faculty of Medicine, School of Health Sciences, University of Ioannina, 45110 Ioannina, Greece;
| | - Niki Malliaraki
- Laboratory of Clinical Chemistry-Biochemistry, University Hospital of Heraklion, 71003 Crete, Greece
| | - Foteini Malli
- Respiratory Disorders Lab, Faculty of Nursing, University of Thessaly, 41110 Larissa, Greece; (I.C.L.); (F.M.)
| | - Erasmia C. Rouka
- Public Health & Vaccines Laboratory, Faculty of Nursing, School of Health Sciences, University of Thessaly, 41110 Larissa, Greece; (A.K.); (E.C.R.)
| | - Georgios Marinos
- Department of Hygiene, Epidemiology and Medical Statistics, School of Medicine, National and Kapodistrian University of Athens, 11527 Athens, Greece;
| | - Emmanouil K. Symvoulakis
- Department of Social Medicine, Faculty of Medicine, University of Crete, 71003 Heraklion, Greece;
| | - Georgios Rachiotis
- Department of Hygiene and Epidemiology, Medical Faculty, School of Health Science, University of Thessaly, 42200 Larissa, Greece;
| | - Konstantinos I. Gourgoulianis
- Department of Respiratory Medicine, Faculty of Medicine, School of Health Sciences, University of Thessaly, BIOPOLIS, 41110 Larissa, Greece;
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Khramtsov P, Bochkova M, Timganova V, Kiselkov D, Zamorina S, Rayev M. Albumin Nanoparticles Loaded with Hemin as Peroxidase Mimics for Immunoassay**. ChemistrySelect 2022. [DOI: 10.1002/slct.202103892] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Pavel Khramtsov
- Lab of Ecological immunology Institute of Ecology and Genetics of Microorganisms UB RAS 614081 13 Golev str. Perm Russia
- Department of Biology Perm State University 614068 15 Bukirev str. Perm Russia
| | - Maria Bochkova
- Lab of Ecological immunology Institute of Ecology and Genetics of Microorganisms UB RAS 614081 13 Golev str. Perm Russia
- Department of Biology Perm State University 614068 15 Bukirev str. Perm Russia
| | - Valeria Timganova
- Lab of Ecological immunology Institute of Ecology and Genetics of Microorganisms UB RAS 614081 13 Golev str. Perm Russia
| | - Dmitriy Kiselkov
- Lab of Structural Chemical Modification of Polymers Institute of Technical Chemistry UB RAS 614013 3 Academician Korolev str. Perm Russia
| | - Svetlana Zamorina
- Lab of Ecological immunology Institute of Ecology and Genetics of Microorganisms UB RAS 614081 13 Golev str. Perm Russia
- Department of Biology Perm State University 614068 15 Bukirev str. Perm Russia
| | - Mikhail Rayev
- Lab of Ecological immunology Institute of Ecology and Genetics of Microorganisms UB RAS 614081 13 Golev str. Perm Russia
- Department of Biology Perm State University 614068 15 Bukirev str. Perm Russia
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De-Simone SG, Gomes LR, Napoleão-Pêgo P, Lechuga GC, de Pina JS, da Silva FR. Epitope Mapping of the Diphtheria Toxin and Development of an ELISA-Specific Diagnostic Assay. Vaccines (Basel) 2021; 9:313. [PMID: 33810325 PMCID: PMC8066203 DOI: 10.3390/vaccines9040313] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2021] [Revised: 03/11/2021] [Accepted: 03/16/2021] [Indexed: 01/06/2023] Open
Abstract
Background: The diphtheria toxoid antigen is a major component in pediatric and booster combination vaccines and is known to raise a protective humoral immune response upon vaccination. Although antibodies are considered critical for diphtheria protection, little is known about the antigenic determinants that maintain humoral immunity. Methods: One-hundred and twelve 15 mer peptides covering the entire sequence of diphtheria toxin (DTx) protein were prepared by SPOT synthesis. The immunoreactivity of membrane-bound peptides with sera from mice immunized with a triple DTP vaccine allowed mapping of continuous B-cell epitopes, topological studies, multiantigen peptide (MAP) synthesis, and Enzyme-Linked Immunosorbent Assay (ELISA) development. Results: Twenty epitopes were identified, with two being in the signal peptide, five in the catalytic domain (CD), seven in the HBFT domain, and five in the receptor-binding domain (RBD). Two 17 mer (CB/Tx-2/12 and CB/DTx-4-13) derived biepitope peptides linked by a Gly-Gly spacer were chemically synthesized. The peptides were used as antigens to coat ELISA plates and assayed with human (huVS) and mice vaccinated sera (miVS) for in vitro diagnosis of diphtheria. The assay proved to be highly sensitive (99.96%) and specific (100%) for huVS and miVS and, when compared with a commercial ELISA test, demonstrated a high performance. Conclusions: Our work displayed the complete picture of the linear B cell IgG response epitope of the DTx responsible for the protective effect and demonstrated sufficient specificity and eligibility for phase IIB studies of some epitopes to develop new and fast diagnostic assays.
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Affiliation(s)
- Salvatore Giovanni De-Simone
- Center for Technological Development in Health (CDTS), Oswaldo Cruz Foundation (FIOCRUZ), National Institute of Science and Technology for Innovation in Neglected Diseases Populations (INCT-IDNP), Rio de Janeiro 21040-900, Brazil; (L.R.G.); (P.N.-P.); (G.C.L.); (J.S.d.P.); (F.R.d.S.)
- Molecular and Cellular Biology Department, Biology Institute, Federal Fluminense University, Niterói 24020-141, Brazil
| | - Larissa Rodrigues Gomes
- Center for Technological Development in Health (CDTS), Oswaldo Cruz Foundation (FIOCRUZ), National Institute of Science and Technology for Innovation in Neglected Diseases Populations (INCT-IDNP), Rio de Janeiro 21040-900, Brazil; (L.R.G.); (P.N.-P.); (G.C.L.); (J.S.d.P.); (F.R.d.S.)
| | - Paloma Napoleão-Pêgo
- Center for Technological Development in Health (CDTS), Oswaldo Cruz Foundation (FIOCRUZ), National Institute of Science and Technology for Innovation in Neglected Diseases Populations (INCT-IDNP), Rio de Janeiro 21040-900, Brazil; (L.R.G.); (P.N.-P.); (G.C.L.); (J.S.d.P.); (F.R.d.S.)
| | - Guilherme Curty Lechuga
- Center for Technological Development in Health (CDTS), Oswaldo Cruz Foundation (FIOCRUZ), National Institute of Science and Technology for Innovation in Neglected Diseases Populations (INCT-IDNP), Rio de Janeiro 21040-900, Brazil; (L.R.G.); (P.N.-P.); (G.C.L.); (J.S.d.P.); (F.R.d.S.)
| | - Jorge Soares de Pina
- Center for Technological Development in Health (CDTS), Oswaldo Cruz Foundation (FIOCRUZ), National Institute of Science and Technology for Innovation in Neglected Diseases Populations (INCT-IDNP), Rio de Janeiro 21040-900, Brazil; (L.R.G.); (P.N.-P.); (G.C.L.); (J.S.d.P.); (F.R.d.S.)
| | - Flavio Rocha da Silva
- Center for Technological Development in Health (CDTS), Oswaldo Cruz Foundation (FIOCRUZ), National Institute of Science and Technology for Innovation in Neglected Diseases Populations (INCT-IDNP), Rio de Janeiro 21040-900, Brazil; (L.R.G.); (P.N.-P.); (G.C.L.); (J.S.d.P.); (F.R.d.S.)
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Khramtsov P, Kropaneva M, Bochkova M, Kiselkov D, Timganova V, Zamorina S, Rayev M. Nuclear magnetic resonance immunoassay of tetanus antibodies based on the displacement of magnetic nanoparticles. Anal Bioanal Chem 2021; 413:1461-71. [PMID: 33491121 DOI: 10.1007/s00216-020-03112-7] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2019] [Revised: 11/11/2020] [Accepted: 12/03/2020] [Indexed: 10/22/2022]
Abstract
A nuclear magnetic resonance (NMR) immunoassay based on the application of carbon-coated iron nanoparticles conjugated with recognition molecules was designed. The principle of the assay is that ELISA plates are coated with a capture element, and then an analyte is added and detected by conjugating the magnetic nanoparticles with recognition molecules. Afterwards, the elution solution (0.1-M sodium hydroxide) is added to displace the magnetic nanoparticles from the well surfaces into the solution. The detached magnetic nanoparticles reduce transverse relaxation time (T2) values of protons from the surrounding solution. A portable NMR relaxometer is used to measure the T2. Magnetic nanoparticles conjugated with streptavidin, monoclonal antibodies, and protein G were applied for the detection of biotinylated albumin, prostate-specific antigen, and IgG specific to tetanus toxoid (TT). The limit of detection of anti-TT IgG was 0.08-0.12 mIU/mL. The reproducibility of the assay was within the acceptable range (CV < 7.4%). The key novelty of the immunoassay is that the displacement of the nanoparticles from the solid support by the elution solution allows the advantages of the solid phase assay to be combined with the sensitive detection of the T2 changes in a volume of liquid.
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Nicácio AAMF, Peracchi OAB, Yamada J, Fraga MM, Vitalle MS, de Moraes-Pinto MI, Terreri MT. Tdap booster to adolescents with juvenile idiopathic arthritis on and off anti-TNF agents is safe and immunogenic. Vaccine 2021; 39:1165-1172. [PMID: 33478788 DOI: 10.1016/j.vaccine.2020.12.071] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2020] [Revised: 12/19/2020] [Accepted: 12/21/2020] [Indexed: 10/22/2022]
Abstract
INTRODUCTION The response to vaccines in juvenile idiopathic arthritis (JIA) patients on and off anti-tumor necrosis factor (anti-TNF) agents remains highly discussed. There are no published studies on the immune response following a Tdap booster dose in JIA patients so far. OBJECTIVE To evaluate the immune response and safety after a Tdap booster in JIA patients and in healthy adolescents. METHODS Nineteen adolescents with JIA according to the ILAR criteria on anti-TNF medication, 19 adolescents with JIA off anti-TNF medication, and 27 healthy adolescents (control group) were compared after a Tdap booster. Adverse events and disease activity were evaluated. Lymphocyte immunophenotyping was performed by flow cytometry. Tetanus, diphtheria and pertussis toxin antibodies were assessed by ELISA; whole blood was stimulated with whole-cell pertussis, and supernatants were assessed for cytokines by xMAP. RESULTS The three groups showed a similar frequency of adverse events. There was no disease reactivation after the Tdap booster. Tetanus, diphtheria and pertussis antibodies showed a significant response when D0 and D14 concentrations were compared in both JIA groups and controls. Over time, a different pattern of response to the Tdap booster was observed among the groups for tetanus antibodies (p = 0.005) but not for diphtheria and pertussis antibodies. In contrast to the protection attained for tetanus and diphtheria, in the three groups, not all individuals showed pertussis seroconversion at either D14 or D28. In addition, the seroconversion of three subjects with JIA on anti-TNF medication was not maintained at D28. JIA patients off anti-TNF showed a higher percentage of naive CD8 + T cells (p = 0.007) and central memory CD8 + cells (p = 0.003) and a lower percentage of effector CD8 + T cells (p = 0.003) and NK cell numbers (p = 0.018) than the control group. The JIA group off anti-TNF medication had fewer B lymphocytes than both the JIA group on anti-TNF medication and the control group (p = 0.016). Cellular immunity to Bordetella pertussis showed that IFNγ levels were significantly lower in both JIA groups than in the control group (p = 0.003), IL10 levels were higher in the JIA off anti-TNF group (p = 0.009), IL17A and IL5 levels were lower in the JIA on anti-TNF group than in the control group (p = 0.018 and p = 0.016, respectively); however, an increase in IFNγ (p = 0.008), IL17A (p = 0.030) and TNFα (p = 0.041) levels was observed at D14 in both patient groups. Both JIA groups showed higher levels of IL21 than the control group (p = 0.023). CONCLUSION We conclude that individuals with JIA on or off anti-TNF agents showed a good response to a booster dose for the three antigens studied in the absence of major adverse events and without the reactivation of the disease.
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Affiliation(s)
- Aline Alencar M F Nicácio
- Unit of Pediatric Rheumatology, Department of Pediatrics, Universidade Federal de São Paulo (UNIFESP), São Paulo, Brazil
| | - Octávio A B Peracchi
- Unit of Pediatric Rheumatology, Department of Pediatrics, Universidade Federal de São Paulo (UNIFESP), São Paulo, Brazil
| | - Juliana Yamada
- Research Laboratory, Division of Pediatric Infectious Diseases, Department of Pediatrics, Universidade Federal de São Paulo (UNIFESP), São Paulo, Brazil
| | - Melissa M Fraga
- Unit of Pediatric Rheumatology, Department of Pediatrics, Universidade Federal de São Paulo (UNIFESP), São Paulo, Brazil
| | - Maria Sylvia Vitalle
- Unit of Adolescence, Department of Pediatrics, Universidade Federal de São Paulo (UNIFESP), São Paulo, Brazil
| | - Maria Isabel de Moraes-Pinto
- Research Laboratory, Division of Pediatric Infectious Diseases, Department of Pediatrics, Universidade Federal de São Paulo (UNIFESP), São Paulo, Brazil
| | - Maria Teresa Terreri
- Unit of Pediatric Rheumatology, Department of Pediatrics, Universidade Federal de São Paulo (UNIFESP), São Paulo, Brazil.
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Garrison-Desany H, Ochieng BO, Odiere MR, Kuo H, Gibson DG, Were J, Kagucia EW, Pasetti MF, Kim H, Reymann M, O'Brien K, Hayford K. Adjustments for oral fluid quality and collection methods improve prediction of circulating tetanus antitoxin: Approaches for correcting antibody concentrations detected in a non-invasive specimen. Vaccine 2020; 39:423-430. [PMID: 33257104 PMCID: PMC7805266 DOI: 10.1016/j.vaccine.2020.11.027] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2019] [Revised: 10/15/2020] [Accepted: 11/09/2020] [Indexed: 11/02/2022]
Abstract
OBJECTIVES To examine whether anti-tetanus toxoid (anti-TT) immunoglobulin G (IgG) levels measured in oral fluid and adjusted for collection difficulties and specimen quality are associated with total IgG and anti-TTIgG in oral fluid and assess if statistical adjustment for them improves prediction of anti-TT IgG in serum. METHODS 267 children, ages 12 to 15 months, enrolled in the M-SIMU randomized controlled trial participated in this nested cross-sectional analysis. Venous blood and oral fluid (OF) specimens were collected, and OF collection difficulties such as crying or gagging were recorded. OF volume was documented and total IgG was measured in OF specimens and anti-TT IgG was measured in OF and serum by enzyme immunoassay (EIA). Collection difficulties, volume and sociodemographic characteristics were assessed in relation to total IgG and anti-TT IgG in OF via multivariate regression. These models were extended to evaluate the association between anti-TT IgG in OF and in serum. A prediction model was developed to adjust anti-TT IgG in OF estimates as proxy for serum. RESULTS Blood in the specimen, sores in the mouth and crying were positively associated with total IgG concentration while high oral fluid volume and sucking on the swab were inversely associated. None were significant predictors of anti-TT IgG in OF after adjusting for total IgG (geometric mean [GM] ratio: 1.99; 95% confidence interval: 1.78-2.24) and vaccination history (GM ratio: 2.44; 95% CI: 1.98-3.01). When predicting anti-TT IgG levels in serum with OF, total IgG modified the effect of anti-TT IgG in OF. CONCLUSIONS Anti-TT IgG in OF is a good proxy for levels in serum, after controlling for total IgG in the specimen and other variables. Post hoc adjustments for OF volume and total IgG concentration are an important consideration when conducting serosurveys with oral fluid.
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Affiliation(s)
- Henri Garrison-Desany
- International Vaccine Access Center, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, USA
| | - Benard Omondi Ochieng
- Centre for Global Health Research, Kenya Medical Research Institute (KEMRI), Kisumu, Kenya
| | - Maurice R Odiere
- Centre for Global Health Research, Kenya Medical Research Institute (KEMRI), Kisumu, Kenya
| | - Helen Kuo
- International Vaccine Access Center, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, USA
| | - Dustin G Gibson
- Department of International Health, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, USA
| | - Joyce Were
- Centre for Global Health Research, Kenya Medical Research Institute (KEMRI), Kisumu, Kenya
| | - E Wangeci Kagucia
- International Vaccine Access Center, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, USA
| | - Marcela F Pasetti
- Center for Vaccine Development and Global Health, University of Maryland School of Medicine, Baltimore, MD, USA
| | - Hani Kim
- Global Health, Bill & Melinda Gates Foundation, Seattle, WA, USA
| | - Mardi Reymann
- Center for Vaccine Development and Global Health, University of Maryland School of Medicine, Baltimore, MD, USA
| | - Katherine O'Brien
- International Vaccine Access Center, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, USA
| | - Kyla Hayford
- International Vaccine Access Center, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, USA.
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Peracchi OA, Nicácio AAM, Yamada J, Len CA, Moraes-Pinto MID, Terreri MT. Adequate tetanus but poor diphtheria and pertussis response to a Tdap booster in adolescents with juvenile systemic lupus erythematosus. Lupus 2020; 30:299-306. [PMID: 33197362 DOI: 10.1177/0961203320973263] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
BACKGROUND Reports on vaccine responses in immunocompromised patients, such as juvenile systemic lupus erythematosus (jSLE), have shown highly variable results. OBJECTIVE To compare the immune response and safety after a Tdap booster in 26 jSLE patients and 26 matched healthy adolescents.Methodology: Adverse events and disease activity were evaluated. Lymphocyte immunophenotyping was performed by flow cytometry. Tetanus, diphtheria and pertussis toxin antibodies were assessed by ELISA; whole blood was stimulated with whole cell pertussis and supernatants were assessed for cytokines by xMAP. RESULTS Both groups showed a similar frequency of adverse events. There was no evidence of disease reactivation after Tdap booster in the jSLE cohort. Both groups showed a significant increase in antibody titers for all three antigens on D14 and D28 (p < 0.001). jSLE patients had a significantly lower increase in diphtheria titers than the control group (p = 0.007). jSLE patients had a distinct titer increase of tetanus and pertussis antibodies when compared to controls (p = 0.004 and p < 0.001, respectively). There was a lower frequency of pertussis seroconversion in the jSLE group on D14 (p = 0.009), D28 (p = 0.023), D12m (p = 0.015) and D24m (p = 0.004). Cellular immune response to Bordetella pertussis showed significantly lower levels of IFNγ (p < 0.001) and higher levels of IL10, IL12, IL21 and TNFα in jSLE patients than controls. CONCLUSIONS jSLE patients had good response to Tdap booster dose for the tetanus antigen, but not for diphtheria and pertussis. This vaccine was safe in relation to adverse events and absence of disease reactivation.
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Affiliation(s)
- Octávio Ab Peracchi
- Unit of Pediatric Rheumatology, Department of Pediatrics, Universidade Federal de São Paulo (UNIFESP), São Paulo, Brazil
| | - Aline Alencar Mf Nicácio
- Unit of Pediatric Rheumatology, Department of Pediatrics, Universidade Federal de São Paulo (UNIFESP), São Paulo, Brazil
| | - Juliana Yamada
- Research Laboratory, Division of Pediatric Infectious Diseases, Department of Pediatrics, Universidade Federal de São Paulo (UNIFESP), São Paulo, Brazil
| | - Claudio Arnaldo Len
- Unit of Pediatric Rheumatology, Department of Pediatrics, Universidade Federal de São Paulo (UNIFESP), São Paulo, Brazil
| | - Maria Isabel de Moraes-Pinto
- Research Laboratory, Division of Pediatric Infectious Diseases, Department of Pediatrics, Universidade Federal de São Paulo (UNIFESP), São Paulo, Brazil
| | - Maria Teresa Terreri
- Unit of Pediatric Rheumatology, Department of Pediatrics, Universidade Federal de São Paulo (UNIFESP), São Paulo, Brazil
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Breakwell L, Anga J, Cooley G, Ropiti L, Gwyn S, Wannemuehler K, Woodring J, Ogaoga D, Martin D, Patel M, Tohme RA. Seroprevalence of chronic hepatitis B virus infection and immunity to measles, rubella, tetanus and diphtheria among schoolchildren aged 6-7 years old in the Solomon Islands, 2016. Vaccine 2020; 38:4679-86. [PMID: 32473876 DOI: 10.1016/j.vaccine.2020.05.029] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2020] [Revised: 05/07/2020] [Accepted: 05/11/2020] [Indexed: 01/16/2023]
Abstract
The Western Pacific Region (WPR) established a goal to decrease chronic hepatitis B virus (HBV) infection among children to <1% and to achieve ≥95% hepatitis B vaccine birth dose (HepB-BD) and ≥95% three-dose (HepB3) coverage by 2017. In 2016, we conducted a national serosurvey in the Solomon Islands among 6-7-year-old school children to assess progress towards the control goal and immunity to measles, rubella, tetanus and diphtheria. Eighty schools were selected systematically proportional to their 6-7-year-old population; all 6-7-year-olds were enrolled. We collected basic demographic information and vaccination history. Children were tested for HBV surface antigen (HBsAg) using a rapid test, and for immunity to measles, rubella, tetanus, and diphtheria using a multiplex bead assay. In total, 1,249 out of 1,492 children (84%) were enrolled, among whom 1,169 (94%) underwent HBsAg testing and 1,156 (93%) provided dried blood spots. Almost 80% (n = 982) of enrolled children had vaccination cards, among whom 59% (n = 584) received a timely HepB-BD (within 24 hours of birth), 95% (n = 932) received HepB3, and >90% received vaccines for diphtheria, tetanus, and measles (rubella vaccine was not available at the time). HBsAg prevalence was 3.1% (95% confidence interval (CI): 2.0%-4.9%), with 55% of identified cases from one province. Among 982 children with vaccination cards, HBsAg prevalence was higher among children who had not received a timely HepB-BD and at least two HepB doses compared to those who had (4% vs. 2%). Of 1,156 tested children, immunoprotection estimates were 99% (95% CI: 98%-99%) for measles, 99% (95% CI: 97%-100%) for rubella, 85% (95% CI: 83%-87%) for tetanus, and 51% (95% CI: 47%-55%) for diphtheria. Improving timely HepB-BD coverage and maintaining high HepB3 coverage could help Solomon Islands reach the regional HBV control goal. Low immunity to tetanus and diphtheria suggests the need to introduce booster doses to ensure long-term protection.
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Njenga SM, Kanyi HM, Arnold BF, Matendechero SH, Onsongo JK, Won KY, Priest JW. Integrated Cross-Sectional Multiplex Serosurveillance of IgG Antibody Responses to Parasitic Diseases and Vaccines in Coastal Kenya. Am J Trop Med Hyg 2020; 102:164-176. [PMID: 31769388 PMCID: PMC6947807 DOI: 10.4269/ajtmh.19-0365] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
Abstract
Accurate and cost-effective identification of areas where co-endemic infections occur would enable public health managers to identify opportunities for implementation of integrated control programs. Dried blood spots collected during cross-sectional lymphatic filariasis surveys in coastal Kenya were used for exploratory integrated detection of IgG antibodies against antigens from several parasitic infections (Wuchereria bancrofti, Schistosoma mansoni, Plasmodium spp., Ascaris lumbricoides, and Strongyloides stercoralis) as well as for detection of responses to immunizing agents used against vaccine-preventable diseases (VPDs) (measles, diphtheria, and tetanus) using a multiplex bead assay (MBA) platform. High heterogeneity was observed in antibody responses by pathogen and antigen across the sentinel sites. Antibody seroprevalence against filarial antigens were generally higher in Ndau Island (P < 0.0001), which also had the highest prevalence of filarial antigenemia compared with other communities. Antibody responses to the Plasmodium species antigens circumsporozoite protein (CSP) and merozoite surface protein-1 (MSP-1)19 were higher in Kilifi and Kwale counties, with Jaribuni community showing higher overall mean seroprevalence (P < 0.0001). Kimorigo community in Taita–Taveta County was the only area where antibody responses against S. mansoni Sm25 recombinant antigen were detected. Seroprevalence rates to Strongyloides antigen NIE ranged between 3% and 26%, and there was high heterogeneity in immune responses against an Ascaris antigen among the study communities. Differences were observed between communities in terms of seroprevalence to VPDs. Seroprotection to tetanus was generally lower in Kwale County than in other counties. This study has demonstrated that MBA holds promise for rapid integrated monitoring of trends of infections of public health importance in endemic areas.
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Affiliation(s)
- Sammy M Njenga
- Eastern and Southern Africa Centre of International Parasite Control, Kenya Medical Research Institute, Nairobi, Kenya
| | - Henry M Kanyi
- Eastern and Southern Africa Centre of International Parasite Control, Kenya Medical Research Institute, Nairobi, Kenya
| | - Benjamin F Arnold
- Francis I. Proctor Foundation, University of California, San Francisco, California
| | - Sultani H Matendechero
- Department of Preventive and Promotive Services, Neglected Tropical Diseases Programme, Ministry of Health, Nairobi, Kenya
| | | | - Kimberly Y Won
- Division of Parasitic Diseases and Malaria, Centers for Disease Control and Prevention, Atlanta, Georgia
| | - Jeffrey W Priest
- Division of Foodborne, Waterborne and Environmental Diseases, Centers for Disease Control and Prevention, Atlanta, Georgia
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Abstract
Diphtheria is a potentially fatal infection mostly caused by toxigenic Corynebacterium diphtheriae strains and occasionally by toxigenic C. ulcerans and C. pseudotuberculosis strains. Diphtheria is generally an acute respiratory infection, characterized by the formation of a pseudomembrane in the throat, but cutaneous infections are possible. Systemic effects, such as myocarditis and neuropathy, which are associated with increased fatality risk, are due to diphtheria toxin, an exotoxin produced by the pathogen that inhibits protein synthesis and causes cell death. Clinical diagnosis is confirmed by the isolation and identification of the causative Corynebacterium spp., usually by bacterial culture followed by enzymatic and toxin detection tests. Diphtheria can be treated with the timely administration of diphtheria antitoxin and antimicrobial therapy. Although effective vaccines are available, this disease has the potential to re-emerge in countries where the recommended vaccination programmes are not sustained, and increasing proportions of adults are becoming susceptible to diphtheria. Thousands of diphtheria cases are still reported annually from several countries in Asia and Africa, along with many outbreaks. Changes in the epidemiology of diphtheria have been reported worldwide. The prevalence of toxigenic Corynebacterium spp. highlights the need for proper clinical and epidemiological investigations to quickly identify and treat affected individuals, along with public health measures to prevent and contain the spread of this disease.
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Affiliation(s)
- Naresh Chand Sharma
- Laboratory Department, Maharishi Valmiki Infectious Diseases Hospital, Delhi, India
| | - Androulla Efstratiou
- WHO Collaborating Centre for Diphtheria and Streptococcal Infections, Reference Microbiology Division, Public Health England, London, UK
| | - Igor Mokrousov
- Laboratory of Molecular Epidemiology and Evolutionary Genetics, St. Petersburg Pasteur Institute, St. Petersburg, Russia
| | - Ankur Mutreja
- Global Health-Infectious Diseases, Department of Medicine, University of Cambridge, Cambridge, UK
| | - Bhabatosh Das
- Infection and Immunology Division, Translational Health Science and Technology Institute, Faridabad, India
| | - Thandavarayan Ramamurthy
- Infection and Immunology Division, Translational Health Science and Technology Institute, Faridabad, India.
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Khramtsov P, Barkina I, Kropaneva M, Bochkova M, Timganova V, Nechaev A, Byzov I, Zamorina S, Yermakov A, Rayev M. Magnetic Nanoclusters Coated with Albumin, Casein, and Gelatin: Size Tuning, Relaxivity, Stability, Protein Corona, and Application in Nuclear Magnetic Resonance Immunoassay. Nanomaterials (Basel) 2019; 9:E1345. [PMID: 31546937 DOI: 10.3390/nano9091345] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/26/2019] [Revised: 09/16/2019] [Accepted: 09/18/2019] [Indexed: 02/08/2023]
Abstract
The surface functionalization of magnetic nanoparticles improves their physicochemical properties and applicability in biomedicine. Natural polymers, including proteins, are prospective coatings capable of increasing the stability, biocompatibility, and transverse relaxivity (r2) of magnetic nanoparticles. In this work, we functionalized the nanoclusters of carbon-coated iron nanoparticles with four proteins: bovine serum albumin, casein, and gelatins A and B, and we conducted a comprehensive comparative study of their properties essential to applications in biosensing. First, we examined the influence of environmental parameters on the size of prepared nanoclusters and synthesized protein-coated nanoclusters with a tunable size. Second, we showed that protein coating does not significantly influence the r2 relaxivity of clustered nanoparticles; however, the uniform distribution of individual nanoparticles inside the protein coating facilitates increased relaxivity. Third, we demonstrated the applicability of the obtained nanoclusters in biosensing by the development of a nuclear-magnetic-resonance-based immunoassay for the quantification of antibodies against tetanus toxoid. Fourth, the protein coronas of nanoclusters were studied using SDS-PAGE and Bradford protein assay. Finally, we compared the colloidal stability at various pH values and ionic strengths and in relevant complex media (i.e., blood serum, plasma, milk, juice, beer, and red wine), as well as the heat stability, resistance to proteolytic digestion, and shelf-life of protein-coated nanoclusters.
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Spina FG, Gouvea A, Succi RCM, Calanca F, Weckx LY, Terreri MT, Takano MAS, de Moraes-Pinto MI. Immune response to a Tdap booster in vertically HIV-infected adolescents. Vaccine 2018; 36:5609-16. [PMID: 30087050 DOI: 10.1016/j.vaccine.2018.07.043] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2018] [Revised: 07/15/2018] [Accepted: 07/17/2018] [Indexed: 11/22/2022]
Abstract
BACKGROUND Pertussis cases have increased worldwide and knowledge on immune response and cytokine profile after Tdap vaccine in immunodeficient adolescents is scarce. OBJECTIVE To evaluate the immune response after Tdap in HIV-infected (HIV) and in healthy adolescents (CONTROL). METHODOLOGY Thirty HIV adolescents with CD4 cell counts >200 and 30 CONTROLs were immunized with Tdap, after a prior whole-cell DTP vaccine primary scheme. Blood samples were collected immediately before and after vaccine. Lymphocyte immunophenotyping was performed by flow cytometry; tetanus, diphtheria and pertussis toxin antibodies were assessed by ELISA; whole blood was stimulated with tetanus toxoid and Bordetella pertussis and supernatants were assessed for cytokines by xMAP. RESULTS Mean age of HIV and CONTROL groups were 17.9 e 17.1 years, respectively. Pain at injection site was more intense in CONTROL group. HIV group had similar increase in tetanus antibodies at 28 days (geometric mean concentration, GMC, 15.6; 95% CI, 7.52-32.4) than CONTROL group (GMC, 23.1; 95% CI, 15.0-35.5), but lower diphtheria antibodies at 28 days (GMC, 2.3; 95% CI, 0.88-6.19) than CONTROL group (GMC, 16.4; 95% CI, 10.3-26.2); for pertussis, the percentage of individuals who seroconverted was lower in HIV than CONTROL group (HIV, 62.1% versus CONTROL, 100%; p = .002). Both groups built a cellular immune response to tetanus, with a Th2 (IL-4, IL-5 and IL-13) and Th1 (IFN-γ) response, with lower cytokine levels in HIV than in CONTROL group. Especially for pertussis, cellular and humoral responses were less intense in HIV adolescents, with a lower Th1 and Th17 profile and higher IL-10 levels. HIV-infected adolescents on viral suppression showed an enhanced immune response to all the three vaccine antigens, although still at lower levels if compared to CONTROL group. CONCLUSIONS Both groups tolerated well and built an immune response after Tdap. However, HIV-infected adolescents would probably benefit from more frequent booster doses.
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Gouveia-Alves F, Gouveia R, Ginani VC, Seber A, Kuramoto DA, Murad GFA, Spina FG, Petrilli AS, Zecchin VG, Granato C, Carlesse F, de Moraes-Pinto MI. Adherence and immune response to revaccination following hematopoietic stem cell transplantation at a pediatric onco-hematology reference center. Transpl Infect Dis 2018; 20:e12903. [PMID: 29668078 DOI: 10.1111/tid.12903] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2017] [Revised: 03/14/2018] [Accepted: 03/18/2018] [Indexed: 02/06/2023]
Abstract
BACKGROUND Revaccination after hematopoietic stem cell transplantation (HSCT) is necessary to compensate for the loss of immunological memory. The aims of this study were to evaluate the adherence to revaccination schedule and the humoral immune response to different vaccine antigens in HSCT pediatric and young adult patients. METHODS Patients submitted to HSCT for over 3 years were recruited. After written informed consent, a questionnaire was filled in, the vaccination card was analyzed, a blood sample was collected and tested by ELISA for diphtheria, Haemophilus influenzae type b (Hib), hepatitis A, hepatitis B, tetanus, measles, rubella, and varicella antibodies. RESULTS Sixty-three patients (mean age at HSCT, 10.7 years) were evaluated. Forty-one (65%) were male; 34 (54%) had allogeneic and 29 (46%), autologous HSCT. Complete adherence to diphtheria revaccination was found in 79.4% patients and seropositivity was found in 92% of those who completed the revaccination schedule; for Hib, 68.3% adherence and 95.3% seropositivity were observed; for hepatitis A, 63.5% adherence and 92.5% seropositivity; for 3 doses of hepatitis B, 86.8% adherence and 79.2% seropositivity; for tetanus, 79.4% adherence and 100% seropositivity; for measles and rubella, 17.5% adherence and 100% seropositivity; for varicella, 7.9% adherence and 100% seropositivity. The existence of a Vaccination Center for Special Immunobiologicals in patients' municipality was positively associated with completed vaccine schedule; on the other hand, chronic GVHD was negatively associated with revaccination adherence. CONCLUSION Hematopoietic stem cell transplantation patients showed good seropositivity rates after complete vaccination schedule. However, a low coverage rate was observed for live attenuated antigens.
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Affiliation(s)
| | | | | | | | - Danielle A Kuramoto
- Department of Pediatrics, Universidade Federal de São Paulo, São Paulo, Brazil
| | - Gabriel F A Murad
- Department of Pediatrics, Universidade Federal de São Paulo, São Paulo, Brazil
| | - Fernanda G Spina
- Department of Pediatrics, Universidade Federal de São Paulo, São Paulo, Brazil
| | - Antonio S Petrilli
- Department of Pediatrics, Universidade Federal de São Paulo, São Paulo, Brazil
| | - Victor G Zecchin
- Department of Pediatrics, Universidade Federal de São Paulo, São Paulo, Brazil
| | - Celso Granato
- Department of Medicine, Universidade Federal de São Paulo, São Paulo, Brazil.,Fleury Group, São Paulo, Brazil
| | - Fabianne Carlesse
- Department of Pediatrics, Universidade Federal de São Paulo, São Paulo, Brazil
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Succi RCM, Krauss MR, Harris DR, Machado DM, de Moraes-Pinto MI, Mussi-Pinhata MM, Pavia Ruz N, Pierre RB, Kolevic Roca LA, Joao E, Foradori I, Scotta MC, Hazra R, Siberry GK; NISDI Pediatric Study Group 2012. Immunity After Childhood Vaccinations in Perinatally HIV-exposed Children With and Without HIV Infection in Latin America. Pediatr Infect Dis J 2018; 37:304-9. [PMID: 29140938 DOI: 10.1097/INF.0000000000001831] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
BACKGROUND Perinatally HIV-infected (PHIV) children are at risk for under-vaccination and poor vaccine response at 4 years of age. Childhood vaccine coverage and immune response were compared between PHIV and HIV-exposed uninfected (HEU) children in Latin America and the Caribbean. METHODS PHIV and HEU children were enrolled prospectively at 15 sites from 2002 to 2009. Full vaccination by age 4 years was defined as: 3 hepatitis B virus vaccine doses; 4 tetanus toxoid-containing vaccine doses; 3 doses of Haemophilus influenzae type b vaccine by age 12 months or ≥1 dose given after age 12 months; one measles-containing vaccine dose; one rubella-containing vaccine dose. Immunity was defined by serum antibody titer. Fisher exact test (for categorical measures) and t test (for continuous measures) were used for comparisons. RESULTS Among 519 children seen at age 4 years, 191 had serum specimens available (137 PHIV, 54 HEU). Among those with specimens available, 29.3% initiated combination antiretroviral therapy (cART) <12 months of age, 30.9% initiated at ≥12 months of age, and 39.8% had not received cART by the time they were seen at 4 years of age. At 4 years of age, 59.9% were on PI-containing cART (cART/PI), and 20.4% were on no ART. PHIV children were less likely than HEU children to be fully vaccinated for tetanus (55.5% vs. 77.8%, P = 0.005) and measles and rubella (both 70.1% vs. 94.4%, P < 0.001). Among those fully vaccinated, immunity was significantly lower among PHIV than HEU for all vaccines examined: 20.9% versus 37.8% for hepatitis B virus (P = 0.04), 72.0% versus 90.5% for tetanus (P = 0.02), 51.4% versus 68.8% for H. influenzae type b (P = 0.05), 80.2% versus 100% for measles (P < 0.001) and 72.9% versus 98.0% for rubella (P < 0.001) vaccine, respectively. CONCLUSIONS Compared with HEU, PHIV children were significantly less likely to be immune to vaccine-preventable diseases when fully vaccinated. Strategies to increase immunity against vaccine-preventable diseases among PHIV require further study.
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Sonmez C, Coplu N, Gozalan A, Akin L, Esen B. Comparison of in-house biotin-avidin tetanus IgG enzyme-linked-immunosorbent assay (ELISA) with gold standard in vivo mouse neutralization test for the detection of low level antibodies. J Immunol Methods 2017; 445:67-70. [DOI: 10.1016/j.jim.2017.03.012] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2017] [Accepted: 03/17/2017] [Indexed: 10/19/2022]
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Kostjukovits S, Klemetti P, Valta H, Martelius T, Notarangelo LD, Seppänen M, Taskinen M, Mäkitie O. Analysis of clinical and immunologic phenotype in a large cohort of children and adults with cartilage-hair hypoplasia. J Allergy Clin Immunol 2017; 140:612-614.e5. [PMID: 28284971 DOI: 10.1016/j.jaci.2017.02.016] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2016] [Revised: 01/25/2017] [Accepted: 02/06/2017] [Indexed: 11/19/2022]
Affiliation(s)
- Svetlana Kostjukovits
- Children's Hospital, University of Helsinki and Helsinki University Hospital, Helsinki, Finland; Folkhälsan Research Center, Helsinki, Finland; Department of Pediatrics, Malmi District Hospital, Pietarsaari, Finland
| | - Paula Klemetti
- Children's Hospital, University of Helsinki and Helsinki University Hospital, Helsinki, Finland
| | - Helena Valta
- Children's Hospital, University of Helsinki and Helsinki University Hospital, Helsinki, Finland
| | - Timi Martelius
- Children's Hospital, University of Helsinki and Helsinki University Hospital, Helsinki, Finland; Adult Immunodeficiency Unit, Inflammation Center, University of Helsinki and Helsinki University Hospital, Helsinki, Finland
| | - Luigi D Notarangelo
- Laboratory of Host Defenses, Division of Intramural Research, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Md
| | - Mikko Seppänen
- Children's Hospital, University of Helsinki and Helsinki University Hospital, Helsinki, Finland; Adult Immunodeficiency Unit, Inflammation Center, University of Helsinki and Helsinki University Hospital, Helsinki, Finland
| | - Mervi Taskinen
- Children's Hospital, University of Helsinki and Helsinki University Hospital, Helsinki, Finland
| | - Outi Mäkitie
- Children's Hospital, University of Helsinki and Helsinki University Hospital, Helsinki, Finland; Folkhälsan Research Center, Helsinki, Finland; Center for Molecular Medicine, Karolinska Institutet and Clinical Genetics, Karolinska University Hospital, Stockholm, Sweden.
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Scobie HM, Mao B, Buth S, Wannemuehler KA, Sørensen C, Kannarath C, Jenks MH, Moss DM, Priest JW, Soeung SC, Deming MS, Lammie PJ, Gregory CJ. Tetanus Immunity among Women Aged 15 to 39 Years in Cambodia: a National Population-Based Serosurvey, 2012. Clin Vaccine Immunol 2016; 23:546-54. [PMID: 27053629 DOI: 10.1128/CVI.00052-16] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/27/2016] [Accepted: 03/19/2016] [Indexed: 01/21/2023]
Abstract
To monitor progress toward maternal and neonatal tetanus elimination (MNTE) in Cambodia, we conducted a nationwide serosurvey of tetanus immunity in 2012. Multistage cluster sampling was used to select 2,154 women aged 15 to 39 years. Tetanus toxoid antibodies in serum samples were measured by gold-standard double-antigen enzyme-linked immunosorbent assay (DAE) and a novel multiplex bead assay (MBA). Antibody concentrations of ≥0.01 IU/ml by DAE or the equivalent for MBA were considered seroprotective. Estimated tetanus seroprotection was 88% (95% confidence interval [CI], 86 to 89%); 64% (95% CI, 61 to 67%) of women had antibody levels of ≥1.0 IU/ml. Seroprotection was significantly lower (P < 0.001) among women aged 15 to 19 years (63%) and 20 to 24 years (87%) than among those aged ≥25 years (96%), among nulliparous women than among parous women (71 versus 97%), and among those living in the western region than among those living in other regions (82 versus 89%). The MBA showed high sensitivity (99% [95% CI, 98 to 99%]) and specificity (92% [95% CI, 88 to 95%]) compared with DAE. Findings were compatible with MNTE in Cambodia (≥80% protection). Tetanus immunity gaps should be addressed through strengthened routine immunization and targeted vaccination campaigns. Incorporating tetanus testing in national serosurveys using MBAs, which can measure immunity to multiple pathogens simultaneously, may be beneficial for monitoring MNTE.
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Levine MM, Pasetti MF. Serological Monitoring Is Key To Sustain Progress of the Maternal and Neonatal Tetanus Elimination Initiative. Clin Vaccine Immunol 2016; 23:532-4. [PMID: 27226278 DOI: 10.1128/CVI.00259-16] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
In this issue of Clinical and Vaccine Immunology, Scobie and colleagues (H. M. Scobie et al., Clin Vaccine Immunol 23:546-554, 2016, http://dx.doi.org/10.1128/CVI.00052-16) report a nationwide serosurvey of tetanus immunity in >2,000 Cambodian women of child-bearing age to monitor progress toward maternal and neonatal tetanus elimination. This commentary discusses vaccines as interventions for disease control, elimination, and eradication and emphasizes the importance of the tools needed to monitor the effectiveness of initiatives that deliver the vaccines programmatically.
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Dinelli MIS, Ono E, Viana PO, Spina FG, Weckx LY, Dos Santos AMN, Moraes-Pinto MID. Response to immunization in children born to renal transplant recipients using immunosuppressive drugs during gestation. Vaccine 2015; 34:404-407. [PMID: 26707214 DOI: 10.1016/j.vaccine.2015.12.017] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2015] [Revised: 12/03/2015] [Accepted: 12/08/2015] [Indexed: 11/15/2022]
Abstract
The use of immunosuppressive drugs can impair vaccination responses. When used during pregnancy, they may interfere with the development of the fetus's immune system. However, little is known regarding their influence on infant's response to vaccinations. Twenty-seven children born to renal transplant mothers (Tx) taking immunosuppressive drugs and 31 healthy children had the humoral immune response and reactogenicity to tetanus, Haemophilus influenzae type b (Hib) and 7 pneumococcal serotypes evaluated. The evolution of BCG vaccine scar was also registered. Antibodies were measured by ELISA. Lymphocyte immunophenotyping was performed on cord blood and at 7-8 months of age. Among Tx neonates, 82.4% had low B lymphocyte numbers at birth, and 29.4% had also low numbers of other lymphocyte subpopulations. Nevertheless, all children developed protective antibodies with similar antibody concentrations to the control group. Vaccine reactogenicity was similar in both groups and BCG healing was uneventful.
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Affiliation(s)
- Maria Isabel Saraiva Dinelli
- Department of Pediatrics, Federal University of São Paulo, Division of Pediatric Infectious Diseases, Rua Pedro de Toledo, 781/9° andar São Paulo 04039-032, SP, Brazil
| | - Erika Ono
- Department of Pediatrics, Federal University of São Paulo, Division of Pediatric Infectious Diseases, Rua Pedro de Toledo, 781/9° andar São Paulo 04039-032, SP, Brazil
| | - Patrícia Oliveira Viana
- Department of Pediatrics, Federal University of São Paulo, Division of Pediatric Infectious Diseases, Rua Pedro de Toledo, 781/9° andar São Paulo 04039-032, SP, Brazil
| | - Fernanda Garcia Spina
- Department of Pediatrics, Federal University of São Paulo, Division of Pediatric Infectious Diseases, Rua Pedro de Toledo, 781/9° andar São Paulo 04039-032, SP, Brazil
| | - Lily Yin Weckx
- Department of Pediatrics, Federal University of São Paulo, Division of Pediatric Infectious Diseases, Rua Pedro de Toledo, 781/9° andar São Paulo 04039-032, SP, Brazil
| | - Amélia Miyashiro Nunes Dos Santos
- Department of Pediatrics, Federal University of São Paulo, Division of Pediatric Infectious Diseases, Rua Pedro de Toledo, 781/9° andar São Paulo 04039-032, SP, Brazil
| | - Maria Isabel de Moraes-Pinto
- Department of Pediatrics, Federal University of São Paulo, Division of Pediatric Infectious Diseases, Rua Pedro de Toledo, 781/9° andar São Paulo 04039-032, SP, Brazil.
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Viana PO, Ono E, Dinelli MIS, Costa-carvalho BT, Santos AMND, Sass N, Moraes-pinto MID. Maternally acquired IgG immunity in neonates born to renal transplanted women. Vaccine 2015; 33:3104-9. [DOI: 10.1016/j.vaccine.2015.04.104] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2015] [Revised: 04/17/2015] [Accepted: 04/30/2015] [Indexed: 01/18/2023]
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Nobre FA, Gonzalez IGDS, Simão RM, de Moraes Pinto MI, Costa-Carvalho BT. Antibody levels to tetanus, diphtheria, measles and varicella in patients with primary immunodeficiency undergoing intravenous immunoglobulin therapy: a prospective study. BMC Immunol 2014; 15:26. [PMID: 24952415 PMCID: PMC4074853 DOI: 10.1186/1471-2172-15-26] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2014] [Accepted: 06/09/2014] [Indexed: 01/08/2023] Open
Abstract
BACKGROUND Patients with antibody deficiencies depend on the presence of a variety of antibody specificities in intravenous immunoglobulin (IVIG) to ensure continued protection against pathogens. Few studies have examined levels of antibodies to specific pathogens in IVIG preparations and little is known about the specific antibody levels in patients under regular IVIG treatment. The current study determined the range of antibodies to tetanus, diphtheria, measles and varicella in IVIG products and the levels of these antibodies in patients undergoing IVIG treatment. METHODS We selected 21 patients with primary antibody deficiencies who were receiving regular therapy with IVIG. Over a period of one year, we collected four blood samples from each patient (every 3 months), immediately before immunoglobulin infusion. We also collected samples from the IVIG preparation the patients received the month prior to blood collection. Antibody levels to tetanus, diphtheria, measles and varicella virus were measured in plasma and IVIG samples. Total IgG levels were determined in plasma samples. RESULTS Antibody levels to tetanus, diphtheria, varicella virus and measles showed considerable variation in different IVIG lots, but they were similar when compared between commercial preparations. All patients presented with protective levels of antibodies specific for tetanus, measles and varicella. Some patients had suboptimal diphtheria antibody levels. There was a significant correlation between serum and IVIG antibodies to all pathogens, except tetanus. There was a significant correlation between diphtheria and varicella antibodies with total IgG levels, but there was no significant correlation with antibodies to tetanus or measles. CONCLUSIONS The study confirmed the variation in specific antibody levels between batches of the same brand of IVIG. Apart from the most common infections to which these patients are susceptible, health care providers must be aware of other vaccine preventable diseases, which still exist globally.
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Affiliation(s)
- Fernanda Aimée Nobre
- Federal University of Sao Paulo, Rua dos Otonis, 731, CEP: 04025-002 São Paulo, Brazil.
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Perin MCAA, Schlindwein CF, de Moraes-Pinto MI, Simão-Gurge RM, de Mello Almada Mimica AF, Goulart AL, dos Santos AMN. Immune response to tetanus booster in infants aged 15 months born prematurely with very low birth weight. Vaccine 2012; 30:6521-6. [DOI: 10.1016/j.vaccine.2012.08.056] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2012] [Revised: 08/21/2012] [Accepted: 08/23/2012] [Indexed: 01/17/2023]
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Olkinuora H, Käyhty H, Davidkin I, Roivainen M, Olander RM, Kantele JM, Siitonen S, Vettenranta K. Immunity after (re)vaccination of paediatric patients following haematopoietic stem cell transplantation. Acta Paediatr 2012; 101:e373-7. [PMID: 22537137 DOI: 10.1111/j.1651-2227.2012.02710.x] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Abstract
AIMS Loss of specific immunity follows allogeneic haematopoietic stem cell transplantation (HSCT) in the majority of cases. Responses to (re)vaccinations can be used as indicators of a functional immunological recovery. METHODS Twenty-three paediatric recipients of HSCT were enrolled in a single centre setting and responses to scheduled immunizations analysed. RESULTS Immunity to vaccine-preventable diseases was impaired post HSCT, but (re)vaccinations induced protective responses in 59-100%, depending on the vaccine, regardless of prior graft-versus-host disease (GVHD) history. CONCLUSION Despite the marked impact of moderate to severe chronic prior GVHD on both the qualitative and quantitative T-cell recovery post allogenic HSCT, most paediatric recipients of allogeneic stem cell grafts appear to attain protective antibody levels after immunization.
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Affiliation(s)
- Helena Olkinuora
- Division of Hematology-Oncology and Stem Cell Transplantation, Children's Hospital, Helsinki University Central Hospital, Helsinki, Finland.
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Thierry-Carstensen B, Jordan K, Uhlving HH, Dalby T, Sørensen C, Jensen AM, Heilmann C. A randomised, double-blind, non-inferiority clinical trial on the safety and immunogenicity of a tetanus, diphtheria and monocomponent acellular pertussis (TdaP) vaccine in comparison to a tetanus and diphtheria (Td) vaccine when given as booster vaccinations to healthy adults. Vaccine 2012; 30:5464-71. [PMID: 22776216 DOI: 10.1016/j.vaccine.2012.06.073] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2012] [Revised: 04/26/2012] [Accepted: 06/25/2012] [Indexed: 10/28/2022]
Abstract
BACKGROUND Increasing incidence of pertussis in adolescents and adults has stimulated the development of safe and immunogenic acellular pertussis vaccines for booster vaccination of adolescents and adults. PURPOSE To obtain clinical documentation of the safety and immunogenicity of a tetanus, diphtheria and monocomponent acellular pertussis combination vaccine (TdaP), when given as a booster vaccination to adults. METHODS The trial was double-blind, controlled and randomised. 802 healthy adults, aged 18-55 years who had completed childhood vaccination with diphtheria, tetanus and whole cell pertussis vaccine (DTwP), were booster vaccinated with TdaP or Td. Blood samples were taken before and one month after the vaccination for serological analysis and adverse events were recorded during the one-month-follow-up period. RESULTS The monocomponent acellular pertussis vaccine (aP) in the TdaP vaccine was immunogenic in adults with 92.0% of TdaP vaccinated subjects obtaining an anti-pertussis toxin (anti-PT) antibody booster response. TdaP was non-inferior to Td in eliciting seroprotective anti-tetanus and diphtheria antibody concentrations with more than 98% of subjects obtaining post-vaccination seroprotective concentrations (≥ 0.1 IU/mL). T and d booster response rates were 93.0% and 97.5%, respectively. The frequencies of solicited local adverse reactions were low and comparable between TdaP and Td vaccinees. In the TdaP group, 30.7% reported pain, 4.2% swelling and 2.0% erythema at the injection site. The most frequent solicited general symptoms were headache (20.4%), fatigue (17.0%) and myalgia (10.0%). In the Td group, 35.7% reported pain, 2.5% swelling and 3.2% erythema at the injection site, whereas headache, fatigue and myalgia were reported by 15.7%, 14.5% and 12.5%, respectively. In conclusion, TdaP Vaccine SSI was safe and immunogenic when given as a booster vaccination to adults.
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di Giovine P, Kafatos G, Nardone A, Andrews N, Ölander RM, Alfarone G, Broughton K, Cohen D, Kriz B, Mikova I, O'Flanagan D, Schneider F, Selga I, Valinsky L, Velicko I, Karacs I, Pebody R, von Hunolstein C. Comparative seroepidemiology of diphtheria in six European countries and Israel. Epidemiol Infect 2013; 141:132-42. [PMID: 22361223 DOI: 10.1017/S0950268812000210] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
Abstract
Serological surveys for diphtheria were conducted in six European countries including Czech Republic, Hungary, Ireland, Latvia, Luxembourg, Slovakia and one country outside Europe, Israel. For each country, a nationally representative population sample was collected across the entire age range and was tested for antibodies to diphtheria toxin. Although each national laboratory used its preferred assay, the results were all standardized to those of the in vitro neutralization test and expressed in international units (IU) which allowed comparative analyses to be performed. The results showed that increasing age is related to a gradual increase in seronegative subjects (<0·01 IU/ml of diphtheria antitoxin antibodies). This may reflect waning immunity following childhood vaccination without repeated booster vaccinations in adults. Differences in seronegativity were also found according to gender. In subjects aged 1-19 years, geometric mean titres of antitoxin are clearly related to the different vaccination schedules used in the participating countries. Although clinical disease remains rare, the susceptibility to diphtheria observed in these serosurveys highlights the importance of strengthened surveillance.
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Miyamoto M, Ono E, Barbosa CPL, Terreri MTRA, Hilário MOE, Salomão R, Moraes-Pinto MID. Vaccine antibodies and T- and B-cell interaction in juvenile systemic lupus erythematosus. Lupus 2011; 20:736-44. [DOI: 10.1177/0961203310397409] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Affiliation(s)
- M Miyamoto
- Division of Pediatric Infectious Diseases, Department of Pediatrics, Federal University of São Paulo, São Paulo, Brazil
| | - E Ono
- Division of Pediatric Infectious Diseases, Department of Pediatrics, Federal University of São Paulo, São Paulo, Brazil
| | - CPL Barbosa
- Division of Allergy, Clinical Immunology and Rheumatology, Department of Pediatrics, Federal University of São Paulo, São Paulo, Brazil
| | - MTRA Terreri
- Division of Allergy, Clinical Immunology and Rheumatology, Department of Pediatrics, Federal University of São Paulo, São Paulo, Brazil
| | - MOE Hilário
- Division of Allergy, Clinical Immunology and Rheumatology, Department of Pediatrics, Federal University of São Paulo, São Paulo, Brazil
| | - R Salomão
- Division of Infectious Diseases, Department of Medicine, Federal University of São Paulo, São Paulo, Brazil
| | - MI de Moraes-Pinto
- Division of Pediatric Infectious Diseases, Department of Pediatrics, Federal University of São Paulo, São Paulo, Brazil
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Di Giovine P, Pinto A, Olander RM, Sesardic D, Stickings P, Berbers G, Neal S, Efstratiou A, Paberza R, Dauksiene S, Bujko M, Detcheva A, Joks U, Levent B, von Hunolstein C. External quality assessment for the determination of diphtheria antitoxin in human serum. Clin Vaccine Immunol 2010; 17:1282-90. [PMID: 20610661 DOI: 10.1128/CVI.00096-10] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Accurate determination of diphtheria toxin antibodies is of value in determining the rates of immunity within broad populations or the immune status of individuals who may be at risk of infection, by assessing responses to vaccination and immunization schedule efficacy. Here we report the results of an external quality assessment (EQA) study for diphtheria serology, performed within the dedicated surveillance network DIPNET. Twelve national laboratories from 11 European countries participated by testing a standard panel of 150 sera using their current routine method: Vero cell neutralization test (NT), double-antigen enzyme-linked immunosorbent assay (ELISA; DAE), dual double-antigen time-resolved fluorescence immunoassay (dDA-DELFIA), passive hemagglutination assay (PHA), toxin binding inhibition assay (ToBI), and in-house or commercial ELISAs. The objective of the study was not to identify the best assay, as the advantages and drawbacks of methods used were known, but to verify if laboratories using their routine method would have categorized (as negative, equivocal, or positive) a serum sample in the same way. The performance of each laboratory was determined by comparing its results on a quantitative and qualitative basis to NT results from a single reference laboratory, as this test is considered the in vitro "gold standard." The performance of laboratories using NT was generally very good, while the laboratories' performance using other in vitro methods was variable. Laboratories using ELISA and PHA performed less well than those using DAE, dDA-DELFIA, or ToBI. EQA is important for both laboratories that use in vitro nonstandardized methods and those that use commercial ELISA kits.
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Posfay-Barbe KM, Kobela M, Sottas C, Grillet S, Taguebue J, Ekoe T, Lambert PH, Lecoultre C, Siegrist CA. Frequent failure of adolescent booster responses to tetanus toxoid despite infant immunization: waning of infancy-induced immune memory? Vaccine 2010; 28:4356-61. [PMID: 20447475 DOI: 10.1016/j.vaccine.2010.04.060] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2010] [Revised: 04/11/2010] [Accepted: 04/19/2010] [Indexed: 11/28/2022]
Abstract
To define the capacity of a tetanus toxoid booster to reactivate infant-triggered immunity, anti-tetanus antibodies were assessed before and after boosting 162 adolescents and 219 children from Mfou (Cameroon). Among 63 adolescents with 3 recorded dose of infant DTP, 29/63 (46%) responded with a > or =4-fold increase of antibody titers, 35/63 (55%) reaching the 0.10UI/ml threshold. Response rates were slightly higher (62%) in children aged 10-11 years. Responders and non-responders only differed significantly in their baseline anti-tetanus antibodies. Thus, early life immune immaturity may limit the persistence of infant-induced immunity and subsequent boosters may be required for sustained protection.
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Viana PO, Ono E, Miyamoto M, Salomao R, Costa-Carvalho BT, Weckx LY, de Moraes-Pinto MI. Humoral and cellular immune responses to measles and tetanus: the importance of elapsed time since last exposure and the nature of the antigen. J Clin Immunol 2010; 30:574-82. [PMID: 20405177 DOI: 10.1007/s10875-010-9420-7] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2010] [Accepted: 03/25/2010] [Indexed: 02/07/2023]
Abstract
OBJECTIVE This study aims to assess the cellular and humoral immune response pre- and post-vaccine rechallenge in healthy adults with previous exposure to measles (virus or vaccine) and different time intervals since last tetanus vaccine. METHODS Humoral immunity was tested by ELISA, and cellular immunity was tested by intracellular interferon gamma detection after in vitro stimulation with antigens. RESULTS While cellular immunity was comparable among vaccinated individuals and those who had measles, higher antibody levels were found in those who had the disease in the past. Both antibodies and CD4(+) T cell tetanus immune responses depended on elapsed time since last immunization. Following a vaccine booster, an increase in cellular immunity and antibodies was observed to both tetanus and measles. Measles humoral response was much more intense among individuals previously exposed to a wild virus. CONCLUSIONS In an era when natural boosters are less frequent, an immune surveillance might be necessary to investigate waning immunity as occurs for tetanus.
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Ölander R, Auranen K, Härkänen T, Leino T. High tetanus and diphtheria antitoxin concentrations in Finnish adults—Time for new booster recommendations? Vaccine 2009; 27:5295-8. [DOI: 10.1016/j.vaccine.2009.06.080] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2009] [Revised: 06/17/2009] [Accepted: 06/22/2009] [Indexed: 11/22/2022]
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Biasutti C, Moraes-Pinto MI, Segurado AC. Antibody response after vaccination with tetanus and diphtheria toxoids in human T-cell lymphotropic virus type 1 asymptomatic carriers. Vaccine 2008; 26:2808-10. [PMID: 18455282 DOI: 10.1016/j.vaccine.2008.03.068] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2008] [Accepted: 03/19/2008] [Indexed: 11/26/2022]
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dos Santos AMN, Ono E, Lobato RT, do Prado SI, Kopelman BI, Cavalcanti CM, Monomi MKI, Weckx LY, de Moraes-Pinto MI. Diphtheria, tetanus, and varicella immunity in health care workers in neonatal units. Am J Infect Control 2008; 36:142-7. [PMID: 18313517 DOI: 10.1016/j.ajic.2007.04.283] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2007] [Revised: 04/25/2007] [Accepted: 04/25/2007] [Indexed: 10/22/2022]
Abstract
BACKGROUND Susceptible health care workers are at risk of acquiring and transmitting vaccine-preventable diseases to or from patients. The objective of this study was to assess antibody levels against diphtheria, tetanus, and varicella in healthcare workers. METHODS Antibody levels against diphtheria, tetanus, and varicella were measured in health care professionals in 2 neonatal units at the Federal University of São Paulo, Brazil. RESULTS Between September and November 2002, 215 of 222 (96.8%) health care workers were studied. Of those, 122 (56.7%) gave oral information regarding their vaccination status against diphtheria and tetanus and only 9 (4.2%) had their vaccination cards. Geometric mean antibody levels against diphtheria, tetanus, and varicella were 0.89 IU/mL (95%CI, 0.73 to 1.08), 0.86 IU/mL (95%CI, 0.68 to 1.07) and 1.10 IU/mL (95%CI, 0.98 to 1.24), respectively. Using internationally accepted definitions, 200 (93.0%) and 182 (84.7%) individuals had full protection against diphtheria and tetanus, respectively. Regarding varicella, 213 (99.1%) individuals were immune and 2 (0.9%) had equivocal immunity against varicella. Of 65 (30.2%) individuals without previous history of the illness, 63 (96.9%) were immune against varicella zoster virus. CONCLUSIONS Based on serologic screening, most professionals were immune to diphtheria, tetanus, and varicella. Absence of previous history of varicella was an unreliable identifier of susceptibility to varicella zoster virus in the health care workers studied.
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Divino-Goes KG, Moraes-Pinto MID, Dinelli MIS, Casagrande ST, Bonetti TCS, Andrade PR, Weckx LY. Prevalence of diphtheria and tetanus antibodies and circulation of Corynebacterium diphtheriae in São Paulo, Brazil. ACTA ACUST UNITED AC 2007; 40:1681-7. [PMID: 17906776 DOI: 10.1590/s0100-879x2006005000184] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2007] [Accepted: 07/04/2007] [Indexed: 11/21/2022]
Abstract
The introduction of routine vaccination against tetanus and diphtheria in Brazil has decreased the incidence and changed the epidemiology of both diseases. We then investigated the prevalence of Corynebacterium diphtheriae carrier status and diphtheria and tetanus immunity in São Paulo, Brazil. From November 2001 to March 2003, 374 individuals were tested for the presence of C. diphtheriae in the naso-oropharynx and of serum diphtheria and tetanus antibodies. Participants were all healthy individuals without acute or chronic pathologies and they were stratified by age as follows: 0-12 months and 1-4, 5-9, 10-14, 15-24, 25-39, 40-59, and > or =60 years. Antibodies were assessed using a double-antigen ELISA. C. diphtheriae species were identified by biochemical analysis and toxigenicity was assessed by the Elek test. For diphtheria, full protection (antibodies > or =0.1 IU/mL) was present in 84% of the individuals, 15% had basic protection (antibodies > or =0.01 and <0.1 IU/mL) and 1% were susceptible (antibodies <0.01 IU/mL). Full tetanus protection (antibodies > or =0.1 IU/mL) was present in 79% of the participants, 18% had basic protection (antibodies > or =0.01 and <0.1 IU/mL) and 3% were susceptible (antibodies <0.01 IU/mL). The geometric mean of diphtheria and tetanus antibodies reached the highest values at 5-9 years and decreased until the 40-59-year age range, increasing again in individuals over 60 years. Three participants (0.8%) were carriers of C. diphtheriae, all non-toxigenic strains. The present results demonstrate the clear need of periodic booster for tetanus and diphtheria vaccine in adolescents and adults after primary immunization in childhood.
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Affiliation(s)
- K G Divino-Goes
- Departamento de Pediatria, Escola Paulista de Medicina, Universidade Federal de São Paulo, São Paulo, SP, Brasil
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Sonobe MH, Trezena AG, Guilhen FB, Takano VL, Fratelli F, Sakauchi D, Morais JF, Prado SMA, Higashi HG. Determination of low tetanus or diphtheria antitoxin titers in sera by a toxin neutralization assay and a modified toxin-binding inhibition test. Braz J Med Biol Res 2007; 40:69-76. [PMID: 17224998 DOI: 10.1590/s0100-879x2007000100009] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2005] [Accepted: 08/03/2006] [Indexed: 11/21/2022] Open
Abstract
A method for the screening of tetanus and diphtheria antibodies in serum using anatoxin (inactivated toxin) instead of toxin was developed as an alternative to the in vivo toxin neutralization assay based on the toxin-binding inhibition test (TOBI test). In this study, the serum titers (values between 1.0 and 19.5 IU) measured by a modified TOBI test (Modi-TOBI test) and toxin neutralization assays were correlated (P < 0.0001). Titers of tetanus or diphtheria antibodies were evaluated in serum samples from guinea pigs immunized with tetanus toxoid, diphtheria-tetanus or triple vaccine. For the Modi-TOBI test, after blocking the microtiter plates, standard tetanus or diphtheria antitoxin and different concentrations of guinea pig sera were incubated with the respective anatoxin. Twelve hours later, these samples were transferred to a plate previously coated with tetanus or diphtheria antitoxin to bind the remaining anatoxin. The anatoxin was then detected using a peroxidase-labeled tetanus or diphtheria antitoxin. Serum titers were calculated using a linear regression plot of the results for the corresponding standard antitoxin. For the toxin neutralization assay, L+/10/50 doses of either toxin combined with different concentrations of serum samples were inoculated into mice for anti-tetanus detection, or in guinea pigs for anti-diphtheria detection. Both assays were suitable for determining wide ranges of antitoxin levels. The linear regression plots showed high correlation coefficients for tetanus (r(2) = 0.95, P < 0.0001) and for diphtheria (r(2) = 0.93, P < 0.0001) between the in vitro and the in vivo assays. The standardized method is appropriate for evaluating titers of neutralizing antibodies, thus permitting the in vitro control of serum antitoxin levels.
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Affiliation(s)
- M H Sonobe
- Divisão de Desenvolvimento Tecnológico e Produção, Instituto Butantan, São Paulo, SP, Brasil.
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Abstract
This study aimed to evaluate human antibody responses to diphtheria toxin subunits in various age groups. Antibodies against the intact diphtheria toxin and the diphtheria toxin subunits A and B were evaluated in 1319 individuals using a double-antigen ELISA. Although high levels of protection (83.6%, 95% CI 79.2-87.4) were found in children and adolescents, the middle-aged adult population was less protected (28.8%, 95% CI 24.3-33.6). An increase in age was associated with a decrease in the frequency of protected individuals in the 0-39-year age group (p <0.001). Anti-subunit B levels correlated well (p <0.01) with levels of antibodies against the intact toxin. In children aged < or =16 years, the intervals at which the peaks in geometric mean titres of anti-subunit B antibodies were observed were found to correlate with the ages at which booster doses are administered. Overall, males appeared to be more protected than females (OR 1.67, 95% CI 1.34-2.08, p <0.001). A small group of individuals had antibody levels of > or =0.1 IU/mL against the intact toxin, but did not have protective antibody against subunit B. Determination of anti-subunit B antibody levels should help in evaluating the effectiveness of diphtheria boosters and other aspects of diphtheria immunity.
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Affiliation(s)
- R Karakus
- Department of Immunology, Gazi University, Faculty of Medicine, Ankara, Turkey.
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Parkkali T, Käyhty H, Hovi T, Olander RM, Roivainen M, Volin L, Ruutu T, Lahdenkari M, Ruutu P. A randomized study on donor immunization with tetanus–diphtheria, Haemophilus influenzae type b and inactivated poliovirus vaccines to improve the recipient responses to the same vaccines after allogeneic bone marrow transplantation. Bone Marrow Transplant 2007; 39:179-88. [PMID: 17211432 DOI: 10.1038/sj.bmt.1705562] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
The HLA-identical sibling donors of 111 bone marrow transplantation (BMT) recipients were randomised to receive or not to receive tetanus-diphtheria (T-d), Haemophilus influenzae type b (Hib), and inactivated poliovirus (IPV) vaccines 2-10 weeks before BM harvest. Fifty-three (DV+ group) recipients received the graft from a vaccinated donor and 58 (DV- group) from an unvaccinated donor. All recipients were vaccinated with the T-d, Hib and IPV vaccines at 3, 6 and 12 months after BMT. Diphtheria and Hib antibody concentrations were consistently higher in the DV+ than in the DV- group from 6 months post transplantation onwards. The differences were significant at 6 and 13 months for diphtheria and at 12 months for Hib antibody concentrations. Tetanus, PV1, PV2 and PV3 antibody levels were similar in both groups. Patients transplanted from donors with high tetanus, diphtheria and Hib antibody concentrations had higher respective antibody concentrations after BMT than those transplanted from donors with low antibody concentrations. Especially patients whose donors have low-specific antibody concentrations may benefit from donor vaccination with protein and conjugate vaccines.
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Affiliation(s)
- T Parkkali
- Department of Medicine, Helsinki University Central Hospital, Helsinki, Finland.
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Ocampo AF, Biltoft C, Lucero M, Olander RM, Ugpo J, Auranen K, Soininen A, Nohynek H, Käyhty H. Response and persistence of antibodies to PRP-T and DTwP vaccines with concomitant administration of conjugate vaccines. Vaccine 2007; 25:605-11. [PMID: 17079058 DOI: 10.1016/j.vaccine.2006.08.038] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2006] [Accepted: 08/24/2006] [Indexed: 10/24/2022]
Abstract
We first studied the immunogenicity of PRP-T and DTwP vaccines in Filipino infants given at 6, 10 and 14 weeks concomitantly with either an aluminum adjuvanted eleven-valent pneumococcal conjugate vaccine (11PncTD) or a meningococcal diphtheria-conjugated vaccine as compared to a control group that received only DTwP/PRP-T. The GMCs and proportions of infants achieving protective antibody concentrations to DTwP and PRP-T vaccine antigens were similar among the groups. In the second phase, the control group received 11PncTD at 18 weeks and the antibody concentrations were measured at 9 months in all children; 11PncTD induced a booster response to diphtheria in the control group. There was no negative interference from concomitant administration of new conjugate vaccines. In contrast, 11PncTD can boost the antibody response to the carrier proteins.
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Affiliation(s)
- Arnaldo F Ocampo
- Research Institute for Tropical Medicine, Filinvest Corporate City, Alabang, Muntinlupa City 1780, Philippines.
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Kukkonen K, Nieminen T, Poussa T, Savilahti E, Kuitunen M. Effect of probiotics on vaccine antibody responses in infancy--a randomized placebo-controlled double-blind trial. Pediatr Allergy Immunol 2006; 17:416-21. [PMID: 16925686 DOI: 10.1111/j.1399-3038.2006.00420.x] [Citation(s) in RCA: 75] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
Abstract
Probiotics are immunomodulatory and may thus affect vaccine antibody responses. With the accumulating evidence of their health-promoting effects, probiotics are increasingly administered in allergy-prone infants. Therefore, we studied the effect of probiotics on antibody responses to diphtheria, tetanus and Haemophilus influenzae type b (Hib) vaccines in 6-month-old infants participating in a randomized placebo-controlled double-blind allergy-prevention trial. Mothers of unborn children at increased risk for atopy used a combination of four probiotic strains, or a placebo, for 4 wk before delivery. During 6 months from birth, their infants received the same probiotics and galacto-oligosaccharides, or a placebo. The infants were immunized with a DTwP (diphtheria, tetanus and whole cell pertussis) at ages 3, 4, and 5 months, and with a Hib polysaccharide conjugate at 4 months. Serum diphtheria, tetanus, and Hib IgG antibodies were measured at 6 months. In the probiotic group, protective Hib antibody concentrations (>/=1 microg/ml) occurred more frequently, 16 of 32 (50%) vs. six of 29 (21%) (p = 0.020), and the geometric mean (inter-quartile range) Hib IgG concentration tended to be higher 0.75 (0.15-2.71) microg/ml than in the placebo group 0.40 (0.15-0.92) microg/ml (p = 0.064). In these respective groups, diphtheria, 0.38 (0.14-0.78) vs. 0.47 (0.19-1.40) IU/ml (p = 0.449), and tetanus, 1.01(0.47-1.49) vs. 0.81 (0.56-1.39) IU/ml (p = 0.310), IgG titers were comparable. In conclusion, in allergy-prone infants probiotics seem not to impair antibody responses to diphtheria, tetanus, or Hib, but may improve response to Hib immunization.
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Affiliation(s)
- Kaarina Kukkonen
- Skin and Allergy Hospital, University of Helsinki, Helsinki, Finland.
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Tapia MD, Pasetti MF, Cuberos L, Sow SO, Doumbia MN, Bagayogo M, Kotloff KL, Levine MM. Measurement of tetanus antitoxin in oral fluid: a tool to conduct serosurveys. Pediatr Infect Dis J 2006; 25:819-25. [PMID: 16940841 DOI: 10.1097/01.inf.0000232629.72160.bb] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
BACKGROUND Serosurveys that measure tetanus antitoxin can complement immunization coverage surveys to allow evaluation of immunization services in developing countries. Measurement of IgG tetanus antitoxin in oral fluid was investigated as a practical and noninvasive alternative to and correlate of serum antibodies. METHODS Serum and oral fluid were collected from Malian infants, toddlers and adults (males without a history of tetanus vaccination). Specific IgG tetanus antitoxin was measured by enzyme-linked immunosorbent assay in serum (S-ELISA) and oral fluid (OF-ELISA). RESULTS One hundred forty-two pairs of serum and oral fluid samples were collected from infants, 35 pairs from toddlers and 35 pairs from adults. IgG tetanus antitoxin titers measured by OF-ELISA were 100-fold lower than those measured by S-ELISA but they correlated strongly (r = 0.90, P < 0.001). All 35 toddlers who had received 2 or 3 doses of diphtheria-tetanus-pertussis (DTP) vaccine (100%) had serum tetanus antitoxin levels >or=0.15 IU/mL and 28 of 35 (80%) had oral fluid values >or=0.0015 IU/mL. Among adults lacking a history of tetanus immunization, only 6 of 35 (17.1%) had serum titers >or=0.15 IU/mL and 4 of 35 (11%) had oral fluid titers >or=0.0015 IU/mL in oral fluid. CONCLUSIONS IgG tetanus antitoxin in oral fluid correlates well with levels in serum. OF-ELISA values >or=0.0015 IU/mL constitute protection against tetanus and in subjects >12 months of age imply multiple prior contacts with immunization services. IgG tetanus antitoxin measured by OF-ELISA provides a logistically practical alternative for performing seroprevalence surveys.
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Affiliation(s)
- Milagritos D Tapia
- Center for Vaccine Development, University of Maryland School of Medicine, Baltimore, Maryland 21201, USA.
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Abstract
Russian children between 7 and 10 years of age have been shown to have significantly higher seroprotection against diphtheria compared to Norwegian children. That was due to a reinforcing dose given on entering school to Russian but not to Norwegian children. The next booster was given at the age of 11-12 years in both countries. We have compared diphtheria and tetanus antitoxin levels among 13- to 14- and 15- to 16-year-old teenagers to see if the difference was maintained among the older age group. Serum samples obtained from 106 Russian and 117 Norwegian teenagers were tested by enzyme immunoassay. The Russian and Norwegian adolescents exhibited adequate rates of protection against diphtheria with similar geometric mean antitoxin concentrations of 1.26 and 1.15 IU/ml, respectively, at 13-14 years, and 0.33 and 0.29 IU/ml at 15-16 years. Differences within the age groups were not significant. However, at 13-14 years the Norwegians were much better protected 2 years after a reinforcing dose of tetanus toxoid than the Russians who had not been boosted for 7 years. At the age of 15-16 the difference diminished and became statistically not significant.
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Affiliation(s)
- Elena Danilova
- Institute of Medicine, Centre for International Health, University of Bergen, Norway
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Weckx LY, Divino-Goes K, Lihama DM, Carraro E, Bellei N, Granato CFH, Moraes-Pinto MID. Effect of a single tetanus-diphtheria vaccine dose on the immunity of elderly people in São Paulo, Brazil. Braz J Med Biol Res 2006; 39:519-23. [PMID: 16612475 DOI: 10.1590/s0100-879x2006000400012] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/08/2023] Open
Abstract
Epidemiological data regarding tetanus and diphtheria immunity in elderly people in Brazil are scarce. During the First National Immunization Campaign for the Elderly in Brazil in April 1999, 98 individuals (median age: 84 years) received one tetanus-dyphtheria (Td) vaccine dose (Butantan Institute, lot number 9808079/G). Inclusion criteria were elderly individuals without a history of severe immunosuppressive disease, acute infectious disease or use of immunomodulators. Blood samples were collected immediately before the vaccine and 30 days later. Serum was separated and stored at -20 degrees C until analysis. Tetanus and diphtheria antibodies were measured by the double-antigen ELISA test. Tetanus and diphtheria antibody concentrations lower than 0.01 IU/mL were considered to indicate the absence of protection, between 0.01 and 0.09 IU/mL were considered to indicate basic immunity, and values of 0.1 IU/mL or higher were considered to indicate full protection. Before vaccination, 18% of the individuals were susceptible to diphtheria and 94% were susceptible to tetanus. After one Td dose, 78% became fully immune to diphtheria, 13% attained basic immunity, and 9% were still susceptible to the disease. In contrast, 79% remained susceptible to tetanus, 4% had basic immunity and 17% were fully immune. Although one Td dose increases immunity to diphtheria in many elderly people who live in Brazil, a complete vaccination series appears to be necessary for the prevention of tetanus.
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Affiliation(s)
- L Y Weckx
- Escola Paulista de Medicina, Universidade Federal de São Paulo, São Paulo, SP, Brazil
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Zaccarelli-Filho CA, Ono E, Machado DM, Brunialti M, Succi RCDM, Salomão R, Kallás EG, de Moraes-Pinto MI. HIV-1-infected children on HAART: Immunologic features of three different levels of viral suppression. Cytometry 2006; 72:14-21. [PMID: 17041945 DOI: 10.1002/cyto.b.20152] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
BACKGROUND HIV-1-infected children show changes of blood lymphocyte subpopulations. We have, therefore, investigated how highly active anti-retroviral therapy (ART) alter these subsets. Blood samples were taken from 41 HIV-1-infected children on ART who were divided into groups showing good, partial and poor responses to ART on the basis of viral load (VL) measurement in blood. The observations were compared to those seen in 20 uninfected children. METHODS The samples were studied using 4-color flow cytometry for "naïve", central memory and effector memory cells as well as for CD38 expression as the sign of activation within both the CD4+ and the CD8+ T cell populations. HIV-1 infected children were also evaluated for the presence and the titers of antibodies induced by vaccination against childhood infections in our patients while on HAART. RESULTS Lymphocyte counts were lower in the "poor" viral load responding (VLR) group when compared with partial and good VLRs. Poor VLRs had lower total and naïve CD4+ T cell counts. HIV-1-infected children from all three groups had high CD8+ T cell counts. Central memory CD4+ and CD8+ T cell percentages were particularly low in the poor VLR group while in the poor VLR group the percentages of effector memory CD4+ and CD8+ T cells were higher when compared with the control group. Higher cellular activation of CD8+ T cells was observed in HIV-1-infected children, particularly when analyzed for the intensity of CD38 expression in the poor VLR group. CD5 expression on B cells was higher among all HIV-1-infected children. Antibodies to tetanus, diphtheria, measles, rubella, and hepatitis B were present in a large proportion of children but the titers were similarly low for all three groups of HIV-infected children. CONCLUSIONS Children with different levels of viral response to HAART present immune phenotype characteristics that tend to place the children with partial and good virological responses into the same group. These children are still moderately deficient in their immune responses but show better recovery than seen with children in the poor VLR group. These observations indicate that the proportions of central memory cells among the CD4+ T cells and the intensity of the expression of CD38 activation antigen on CD8+ T cells provide more informative parameters for monitoring children on HAART than the absolute numbers of CD4+ and CD8+ T cells alone.
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Affiliation(s)
- Carlos Alberto Zaccarelli-Filho
- Division of Pediatric Infectious Diseases, Federal University of São Paulo, rua Pedro de Toledo 781-9 andar, 04039-032 São Paulo, SP, Brazil
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Gidding HF, Backhouse JL, Burgess MA, Gilbert GL. Immunity to diphtheria and tetanus in Australia: a national serosurvey. Med J Aust 2005; 183:301-4. [PMID: 16167869 DOI: 10.5694/j.1326-5377.2005.tb07059.x] [Citation(s) in RCA: 34] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2005] [Accepted: 07/18/2005] [Indexed: 11/17/2022]
Abstract
OBJECTIVE To determine immunity to tetanus and diphtheria in the Australian population. DESIGN AND SETTING Analysis, using double antigen enzyme immunoassays, of a representative sample of sera (1950 samples tested for diphtheria and 2884 for tetanus) collected opportunistically from Australian laboratories between July 1996 and May 1999. MAIN OUTCOME MEASURE Immunity to diphtheria and tetanus, defined as negative (susceptible) when the antitoxin level was < 0.01 IU/mL, positive (immune) when it was > or = 0.1 IU/mL, and low positive (partially immune) when it was in the range 0.01-< 0.1 IU/mL. RESULTS About 99% of children aged 5-9 years had diphtheria and tetanus antitoxin levels > or = 0.01 IU/mL (immune or partially immune). Antitoxin levels declined with age and generally more markedly for diphtheria than tetanus. For subjects aged 50 years and over, less than 60% were immune or partially immune to diphtheria and less than 75% to tetanus. Men and women had similar diphtheria antitoxin levels, while women had lower levels of tetanus antitoxin compared with men of the same age, with the difference being most marked in the age group > or = 70 years (37% v 60%; P < 0.001). CONCLUSIONS Immunity in children appears to be good, but adults, especially older people, may not be adequately protected. Recent changes to the Australian Standard Vaccination Schedule should improve immunity in cohorts now aged < 50 years. However, additional efforts are required to protect those over 50 years (especially travellers), who are most susceptible.
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Affiliation(s)
- Heather F Gidding
- CIDM-Public Health, ICPMR, Westmead Hospital, ICPMR Building, 3rd Floor, Westmead Hospital, Westmead, NSW 2145, Australia.
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Caglar K, Karakus R, Aybay C. Determination of tetanus antibodies by a double-antigen enzyme-linked immunosorbent assay in individuals of various age groups. Eur J Clin Microbiol Infect Dis 2005; 24:523-8. [PMID: 16096777 DOI: 10.1007/s10096-005-1372-0] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
In this study, tetanus immunity was determined in 549 randomly chosen individuals of various age groups in Ankara, Turkey. Antibody levels in sera of the individuals were measured using a double-antigen enzyme-linked immunosorbent assay. Overall, 66.5% (95%CI, 62.4-70.4) of the population studied was found to have basic protection (>or=0.01 IU/ml) against tetanus. Protective levels of tetanus antibodies declined progressively with age. The rate of protection in children and adolescents (aged<20 years) exceeded 90%, while only 16.3% (95%CI, 8.9-26.2) of those over 60 years of age were protected. Females over 60 years of age were less immune than males of the same age group (p=0.034). Although the rates of protection in children and adolescents are regarded as satisfactory, the rates among adults are low. Preventive measures against tetanus should therefore focus on scheduled booster immunization for adults as well as children.
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Affiliation(s)
- K Caglar
- Department of Medical Microbiology, Faculty of Medicine, Gazi University, 06500 Besevler, Ankara, Turkey.
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Abstract
Monophosphoryl lipid A (MPL) was evaluated for its ability to enhance the antibody response to diphtheria toxin and its fragment A and fragment B subunits. BALB/c mice were immunized subcutaneously with 1 Lf of diphtheria toxoid in the presence of 25 microg of MPL on days 0 and 14. Two weeks after the second immunization, sera were obtained from the mice and analysed for antibody response to diphtheria toxin and its subunits. A new ELISA method, developed in our laboratory, was used to measure antibody levels against the toxin, fragment A, and fragment B. It was observed that MPL significantly enhanced antibody responses to diphtheria toxin and its subunits. However, there was no statistical difference between anti-A and anti-B responses. The results indicated that MPL seems to be a potential candidate as an adjuvant for future diphtheria vaccine formulation.
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Affiliation(s)
- Kayhan Caglar
- Department of Microbiology and Clinical Microbiology, Faculty of Medicine, Gazi University, Ankara, Turkey
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Danilova E, Shiryayev A, Skogen V, Kristoffersen EK, Sjursen H. Short-term booster effect of diphtheria toxoid in initially long-term protected individuals. Vaccine 2005; 23:1446-50. [PMID: 15670879 DOI: 10.1016/j.vaccine.2004.09.020] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2004] [Revised: 09/16/2004] [Accepted: 09/30/2004] [Indexed: 11/27/2022]
Abstract
The main objective of this study was to investigate the booster antibody response in individuals with initially high levels of diphtheria antitoxin. Sixty individuals eligible for the routine booster by the age of 18 years each received a single dose of 5 Lf of diphtheria toxoid in diphtheria-tetanus vaccine. A double antigen ELISA was used for the assessment of the antibody levels. Chaotropic disruption in paired ELISA was used to test antibody avidity. The ratio between initial and maximum antibody concentrations after 1 month was >10 times higher and after 6 months still four times higher in those with initial antibody levels <1 IU/ml. In individuals with initial antibody levels >/=1 IU/ml a two-fold decrease was observed after 6 months compared to the initial levels. Thus, vaccination of individuals with initial long-term protection against diphtheria (antibody levels >/=1 IU/ml) is unnecessary and should be avoided.
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Affiliation(s)
- Elena Danilova
- Institute of Medicine, Centre for International Health, University of Bergen, Norway
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Bonetti TCS, Succi RCM, Weckx LY, Tavares-Lopes L, de Moraes-Pinto MI. Tetanus and diphtheria antibodies and response to a booster dose in Brazilian HIV-1-infected women. Vaccine 2004; 22:3707-12. [PMID: 15315850 DOI: 10.1016/j.vaccine.2004.03.023] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2003] [Accepted: 03/09/2004] [Indexed: 11/17/2022]
Abstract
Tetanus and diphtheria (Td) antibodies were studied in HIV-1-infected women during puerperium. HIV group (n=61) was compared with Control group (n=101). Twenty-one women from HIV and 13 from Control group who had antibody levels lower than 0.1 IU/mL received a booster with Td vaccine. Antibodies were assessed by double antigen ELISA. Mean tetanus and diphtheria antibody levels from HIV group were lower than those from Control group. Multiple linear regression analysis showed that tetanus and diphtheria antibody levels were decreased by HIV-1-infection, and that was independent of the reduction due to the time interval between last booster and antibody assessment. After a booster dose, both groups had an increase in mean tetanus and diphtheria antibody levels, but in Control group the levels were higher than in HIV group.
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Affiliation(s)
- Tatiana C S Bonetti
- Department of Pediatrics, Division of Pediatric Infectious Diseases, Federal University of São Paulo, São Paulo, Brazil
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Abstract
We have developed a cheaper an simple in house indirect ELISA that uses the live attenuated VZV vaccine as a coating antigen. The alternative ELISA had an agreement of 94% when compared with a commercial VZV ELISA kit. Moreover, our ELISA proved to be more reliable than the kit when assessing true negative samples. By adding a standard serum, we were able to produce results in international units per millilitre. Also, the addition of an extra step with 8M urea allowed the assessment of VZV IgG avidity without excessive costs. The cost per sample to test VZV IgG was 2.7 times cheaper with our ELISA, allowing the testing of many samples without the burden of production of VZV antigen in the laboratory.
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Affiliation(s)
- Erika Ono
- Division of Pediatric Infectious Diseases, Federal University of São Paulo, Sao Paulo, SP, Brazil
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