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Mero S, Lääveri T, Ursing J, Rombo L, Kofoed PE, Kantele A. Seasonal variation of diarrhoeal pathogens among Guinea-Bissauan children under five years of age. PLoS Negl Trop Dis 2023; 17:e0011179. [PMID: 36913409 PMCID: PMC10035853 DOI: 10.1371/journal.pntd.0011179] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2022] [Revised: 03/23/2023] [Accepted: 02/17/2023] [Indexed: 03/14/2023] Open
Abstract
BACKGROUND Diarrhoea remains a major cause of childhood morbidity and mortality in low-income countries (LICs). The frequency of diarrhoeal episodes may vary by season, yet few prospective cohort studies have examined seasonal variation among various diarrhoeal pathogens using multiplex qPCR to analyse bacterial, viral and parasitic pathogens. METHODS We combined our recent qPCR data of diarrhoeal pathogens (nine bacterial, five viral and four parasitic) among Guinea-Bissauan children under five years old with individual background data, dividing by season. The associations of season (dry winter and rainy summer) and the various pathogens were explored among infants (0-11 months) and young children (12-59 months) and those with and without diarrhoea. RESULTS Many bacterial pathogens, especially EAEC, ETEC and Campylobacter, and parasitic Cryptosporidium, prevailed in the rainy season, whereas many viruses, particularly the adenovirus, astrovirus and rotavirus proved common in the dry season. Noroviruses were found constantly throughout the year. Seasonal variation was observed in both age groups. CONCLUSION In childhood diarrhoea in a West African LIC, seasonal variation appears to favour EAEC, ETEC, and Cryptosporidium in the rainy and viral pathogens in the dry season.
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Affiliation(s)
- Sointu Mero
- Human Microbiome Research Program, Faculty of Medicine, University of Helsinki, Helsinki, Finland
- Meilahti Infectious Diseases and Vaccine Research Center, MeiVac, Department of Infectious Diseases, University of Helsinki and Helsinki University Hospital, Helsinki, Finland
| | - Tinja Lääveri
- Meilahti Infectious Diseases and Vaccine Research Center, MeiVac, Department of Infectious Diseases, University of Helsinki and Helsinki University Hospital, Helsinki, Finland
- Department of Computer Science, Aalto University, Espoo, Finland
| | - Johan Ursing
- Department of Infectious Diseases, Danderyds Hospital, Stockholm, Sweden
- Department of Clinical Science, Karolinska Institutet, Danderyd Hospital, Stockholm, Sweden
- Bandim Health Project, Indepth Network, Bissau, Guinea-Bissau
| | - Lars Rombo
- Department of Medical Biochemistry and Microbiology, Uppsala University, Uppsala, Sweden
- Centre for Clinical Research, Sörmland County Council, Eskilstuna, Sweden and Uppsala University, Uppsala, Sweden
| | - Poul-Erik Kofoed
- Bandim Health Project, Indepth Network, Bissau, Guinea-Bissau
- Department of Paediatrics and Adolescent Medicine, Lillebaelt Hospital, University Hospital of Southern Denmark, Kolding, Denmark
| | - Anu Kantele
- Human Microbiome Research Program, Faculty of Medicine, University of Helsinki, Helsinki, Finland
- Meilahti Infectious Diseases and Vaccine Research Center, MeiVac, Department of Infectious Diseases, University of Helsinki and Helsinki University Hospital, Helsinki, Finland
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Mero S, Timonen S, Lääveri T, Løfberg S, Kirveskari J, Ursing J, Rombo L, Kofoed PE, Kantele A. Prevalence of diarrhoeal pathogens among children under five years of age with and without diarrhoea in Guinea-Bissau. PLoS Negl Trop Dis 2021; 15:e0009709. [PMID: 34587158 PMCID: PMC8504977 DOI: 10.1371/journal.pntd.0009709] [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] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2021] [Revised: 10/11/2021] [Accepted: 08/05/2021] [Indexed: 11/18/2022] Open
Abstract
BACKGROUND Childhood diarrhoea, a major cause of morbidity and mortality in low-income regions, remains scarcely studied in many countries, such as Guinea-Bissau. Stool sample drying enables later qPCR analyses of pathogens without concern about electricity shortages. METHODS Dried stool samples of children under five years treated at the Bandim Health Centre in Bissau, Guinea-Bissau were screened by qPCR for nine enteric bacteria, five viruses, and four parasites. The findings of children having and not having diarrhoea were compared in age groups 0-11 and 12-59 months. RESULTS Of the 429 children- 228 with and 201 without diarrhoea- 96.9% and 93.5% had bacterial, 62.7% and 44.3% viral, and 52.6% and 48.3% parasitic pathogen findings, respectively. Enteroaggregarive Escherichia coli (EAEC; 60.5% versus 66.7%), enteropathogenic E. coli (EPEC; 61.4% versus 62.7%), Campylobacter (53.2% versus 51.8%), and enterotoxigenic E. coli (ETEC; 54.4% versus 44.3%) were the most common bacterial pathogens. Diarrhoea was associated with enteroinvasive E. coli (EIEC)/Shigella (63.3%), ETEC (54.4%), astrovirus (75.0%), norovirus GII (72.6%) and Cryptosporidium (71.2%). The only pathogen associated with severe diarrhoea was EIEC/Shigella (p<0.001). EAEC was found more frequent among the infants, and EIEC/Shigella, Giardia duodenalis and Dientamoeba fragilis among the older children. CONCLUSIONS Stool pathogens proved common among all the children regardless of them having diarrhoea or not.
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Affiliation(s)
- Sointu Mero
- Human Microbiome Research Program, Faculty of Medicine, University of Helsinki, Helsinki, Finland
- Meilahti Infectious Diseases and Vaccine Research Center, MeiVac, University of Helsinki and Helsinki University Hospital, Helsinki, Finland
| | - Suvi Timonen
- Division of Clinical Microbiology, Helsinki University Hospital, HUSLAB, Helsinki, Finland
| | - Tinja Lääveri
- Meilahti Infectious Diseases and Vaccine Research Center, MeiVac, University of Helsinki and Helsinki University Hospital, Helsinki, Finland
| | - Sandra Løfberg
- Department of Infectious Diseases, Odense University Hospital, Odense, Denmark
- Department of Clinical Sciences, Karolinska Institutet, Danderyd Hospital, Stockholm, Sweden
| | | | - Johan Ursing
- Department of Clinical Sciences, Karolinska Institutet, Danderyd Hospital, Stockholm, Sweden
- Bandim Health Project, Indepth Network, Bissau, Guinea-Bissau
- Department of Infectious Diseases, Danderyds Hospital, Stockholm, Sweden
| | - Lars Rombo
- Unit of Infectious Diseases, Uppsala University, Uppsala, Sweden
- Centre for Clinical Research, Sörmland County Council, Eskilstuna, Sweden and Uppsala University, Uppsala, Sweden
| | - Poul-Erik Kofoed
- Bandim Health Project, Indepth Network, Bissau, Guinea-Bissau
- Department of Paediatrics and Adolescent Medicine, Lillebaelt Hospital, University Hospital of Southern Denmark, Kolding, Denmark
| | - Anu Kantele
- Human Microbiome Research Program, Faculty of Medicine, University of Helsinki, Helsinki, Finland
- Meilahti Infectious Diseases and Vaccine Research Center, MeiVac, University of Helsinki and Helsinki University Hospital, Helsinki, Finland
- * E-mail:
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Asare EO, Al-Mamun MA, Armah GE, Lopman BA, Parashar UD, Binka F, Pitzer VE. Modeling of rotavirus transmission dynamics and impact of vaccination in Ghana. Vaccine 2020; 38:4820-4828. [PMID: 32513513 PMCID: PMC8290434 DOI: 10.1016/j.vaccine.2020.05.057] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2019] [Revised: 04/26/2020] [Accepted: 05/18/2020] [Indexed: 12/15/2022]
Abstract
Background: Rotavirus incidence remains relatively high in low-income countries (LICs) compared to high-income countries (HICs) after vaccine introduction. Ghana introduced monovalent rotavirus vaccine in April 2012 and despite the high coverage, vaccine performance has been modest compared to developed countries. The predictors of low vaccine effectiveness in LICs are poorly understood, and the drivers of subnational heterogeneity in rotavirus vaccine impact are unknown. Methods: We used mathematical models to investigate variations in rotavirus incidence in children <5 years old in Ghana. We fit models to surveillance and case-control data from three different hospitals: Korle-Bu Teaching Hospital in Accra, Komfo Anokye Teaching Hospital in Kumasi, and War Memorial Hospital in Navrongo. The models were fitted to both pre- and post-vaccine data to estimate parameters describing the transmission rate, waning of maternal immunity, and vaccine response rate. Results: The seasonal pattern and age distribution of rotavirus cases varied among the three study sites in Ghana. Our model was able to capture the spatio-temporal variations in rotavirus incidence across the three sites and showed good agreement with the age distribution of observed cases. The rotavirus transmission rate was highest in Accra and lowest in Navrongo, while the estimated duration of maternal immunity was longer (∼5 months) in Accra and Kumasi and shorter (∼3 months) in Navrongo. The proportion of infants who responded to the vaccine was estimated to be high in Accra and Kumasi and low in Navrongo. Conclusions: Rotavirus vaccine impact varies within Ghana. A low vaccine response rate was estimated for Navrongo, where rotavirus is highly seasonal and incidence limited to a few months of the year. Our findings highlight the need to further explore the relationship between rotavirus seasonality, maternal immunity, and vaccine response rate to determine how they influence vaccine effectiveness and to develop strategies to improve vaccine impact.
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Affiliation(s)
- Ernest O Asare
- Department of Epidemiology of Microbial Diseases, Yale School of Public Health, Yale University, New Haven, CT, USA.
| | - Mohammad A Al-Mamun
- Department of Epidemiology of Microbial Diseases, Yale School of Public Health, Yale University, New Haven, CT, USA
| | - George E Armah
- Noguchi Memorial Institute for Medical Research, University of Ghana, Accra, Ghana
| | - Benjamin A Lopman
- Department of Epidemiology, Rollins School of Public Health, Emory University, Atlanta, GA, USA
| | - Umesh D Parashar
- Epidemiology Branch, Division of Viral Diseases, Centers for Disease Control and Prevention, Atlanta, GA, USA
| | - Fred Binka
- University of Health and Allied Health Sciences, Ho, Ghana
| | - Virginia E Pitzer
- Department of Epidemiology of Microbial Diseases, Yale School of Public Health, Yale University, New Haven, CT, USA
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Jensen KJ, Biering-Sørensen S, Ursing J, Kofoed PEL, Aaby P, Benn CS. Seasonal variation in the non-specific effects of BCG vaccination on neonatal mortality: three randomised controlled trials in Guinea-Bissau. BMJ Glob Health 2020; 5:e001873. [PMID: 32201619 PMCID: PMC7059430 DOI: 10.1136/bmjgh-2019-001873] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2019] [Revised: 09/11/2019] [Accepted: 09/15/2019] [Indexed: 11/23/2022] Open
Abstract
The BCG vaccine protects non-specifically against other diseases than tuberculosis. Three randomised controlled trials of early BCG in Guinea-Bissau found a 38% reduction in all-cause neonatal mortality. Little is known about the underlying mechanisms. In Guinea-Bissau, prevalent infectious diseases display distinct seasonality. Revisiting the three trials (>6500 infants) comparing early BCG versus no early BCG in low weight infants on all-cause neonatal mortality over 12 consecutive years, we explored the seasonal variation in BCG’s effect on mortality. In a subgroup of participants, adaptive and innate cytokine responses were measured 4 weeks after randomisation. Consistently over the course of the three trials and 12 years, the effect of BCG on all-cause neonatal mortality was particularly beneficial when administered in November to January, coincident with peaking malaria infections. During these months, BCG was also associated with stronger proinflammatory responses to heterologous challenge. Recent studies have suggested a protective effect of BCG against malaria. BCG may also ameliorate immune-compromising fatal effects of placental malaria in the newborn.
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Affiliation(s)
- Kristoffer Jarlov Jensen
- Bandim Health Project, University of Southern Denmark, Copenhagen, Denmark.,Department of Health Technology, Technical University of Denmark, Lyngby, Denmark
| | | | - Johan Ursing
- Department of Infectious Diseases, Danderyd University Hospital, Stockholm, Sweden.,Department of Clinical Sciences, Karolinska Institute, Stockholm, Sweden
| | - Poul-Erik Lund Kofoed
- Department of Pediatrics, Kolding Hospital, Kolding, Denmark.,Bandim Health Project, INDEPTH Network, Bissau, Guinea-Bissau
| | - Peter Aaby
- Bandim Health Project, University of Southern Denmark, Copenhagen, Denmark.,Bandim Health Project, INDEPTH Network, Bissau, Guinea-Bissau
| | - Christine Stabell Benn
- Bandim Health Project, University of Southern Denmark, Copenhagen, Denmark.,OPEN, Institute of Clinical Research, University of Southern Denmark, Odense, Syddanmark, Denmark
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Tsolenyanu E, Seheri M, Dagnra A, Djadou E, Tigossou S, Nyaga M, Adjeoda E, Armah G, Mwenda JM, Atakouma Y. Surveillance for rotavirus gastroenteritis in children less than 5 years of age in Togo. Pediatr Infect Dis J 2014; 33 Suppl 1:S14-8. [PMID: 24343607 DOI: 10.1097/INF.0000000000000046] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
BACKGROUND Rotavirus is the most common cause of severe gastroenteritis and dehydration in young children in both industrialized and developing countries. The anticipated introduction of rotavirus vaccine into Togo's national immunization program highlights the need for baseline data on the burden of this disease. METHODS We conducted sentinel surveillance for rotavirus gastroenteritis among children <5 years of age in Sylvanus Olympio Teaching Hospital of Lome (Togo) from February 2008 through January 2012, based on the World Health Organization's generic protocol. Rotavirus was detected in stool specimens by enzyme linked immunosorbent assay. The strain characterization by genotyping was performed at Noguchi Memorial Institute for Medical Research in Accra (Ghana) and at Medunsa campus in Pretoria (South Africa). RESULTS 803 children with acute gastroenteritis were enrolled and of which 390 (48%) were positive for rotavirus. The difference of age among children with rotavirus and nonrotavirus gastroenteritis was significant (P < 0.010) with rotavirus cases younger than nonrotavirus cases. From December to February, significantly (P < 0.002) more cases of rotavirus gastroenteritis were enrolled compared with other months of the year. Vomiting (P = 0.04) was more common in children with rotavirus than nonrotavirus gastroenteritis. The most common G-P combinations were G3P[6] (23%), G1P[8] (12%), G1P[6/8] (8%), G2P[6] (7%), G12P[6] (7%) and G3/12P[6] (6%). CONCLUSIONS The prevalence of rotavirus is high among children with acute gastroenteritis in Togo. Continued and extended rotavirus surveillance will be important to monitor changes in the epidemiology of rotavirus disease and the impact of vaccination after introduction.
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Razafindratsimandresy R, Heraud JM, Ramarokoto CE, Rabemanantsoa S, Randremanana R, Andriamamonjy NS, Richard V, Reynes JM. Rotavirus genotypes in children in the community with diarrhea in Madagascar. J Med Virol 2013; 85:1652-60. [PMID: 23797859 DOI: 10.1002/jmv.23631] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/20/2013] [Indexed: 12/11/2022]
Abstract
In the context of the possible introduction of a preventive vaccine against rotaviruses in Madagascar, the G and P genotypes distribution of the rotaviruses circulating in the children in Madagascar was studied, and the presence of emerging genotypes and unusual strains were assessed. From February 2008 to May 2009, 1,679 stools specimens were collected from children ≤5 years old with diarrhea. ELISA was used for antigen detection, and molecular amplification of VP7 and VP4 gene fragments was used for genotyping. Rotavirus antigen was detected in 104 samples (6.2%). Partial sequences of VP7 and VP4 genes were obtained from 81 and 80 antigen-positive stools, respectively. The most frequent G and P types combinations detected were G9P[8] (n = 51; 64.6%), followed by G1P[8] (n = 15; 18.9%), and G1P[6] (n = 8; 10.1%). A few unusual G-P combinations, such as G4P[6] (n = 3; 3.8%), G9P[6] (n = 1; 1.3%), and G3P[9] reassortant feline human virus (n = 1; 1.3%) were identified. Both VP4 and VP7 sequences in one of the three G4P[6] isolates were closely related to those in porcine strains, and one was a reassortant human porcine virus. These findings give an overview of the strains circulating in Madagascar and should help public health authorities to define a vaccine strategy.
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Madhi S, Kirsten M, Louw C, Bos P, Aspinall S, Bouckenooghe A, Neuzil K, Steele A. Efficacy and immunogenicity of two or three dose rotavirus-vaccine regimen in South African children over two consecutive rotavirus-seasons: A randomized, double-blind, placebo-controlled trial. Vaccine 2012; 30:A44-51. [DOI: 10.1016/j.vaccine.2011.08.080] [Citation(s) in RCA: 84] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2011] [Revised: 08/08/2011] [Accepted: 08/15/2011] [Indexed: 11/21/2022]
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Fisker AB, Aaby P, Bale C, Balde I, Biering-Sørensen S, Agergaard J, Martins C, Bibby BM, Benn CS. Does the effect of vitamin A supplements depend on vaccination status? An observational study from Guinea-Bissau. BMJ Open 2012; 2:e000448. [PMID: 22240648 PMCID: PMC3278485 DOI: 10.1136/bmjopen-2011-000448] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/03/2022] Open
Abstract
Objective Vitamin A supplementation (VAS) is estimated to reduce all-cause mortality by 24%. Previous studies indicate that the effect of VAS may vary with vaccination status. The authors evaluated the effect of VAS provided in campaigns on child survival overall and by sex and vaccination status at the time of supplementation. Design Observational cohort study. Setting and participants The study was conducted in the urban study area of the Bandim Health Project in Guinea-Bissau. The authors documented participation or non-participation in two national vitamin A campaigns in December 2007 and July 2008 for children between 6 and 35 months of age. Vaccination status was ascertained by inspection of vaccination cards. All children were followed prospectively. Outcome measures Mortality rates for supplemented and non-supplemented children were compared in Cox models providing mortality rate ratios (MRRs). Results The authors obtained information from 93% of 5567 children in 2007 and 90% of 5799 children in 2008. The VAS coverage was 58% in 2007 and 68% in 2008. Mortality in the supplemented group was 1.5% (44 deaths/2873 person-years) and 1.6% (20 deaths/1260 person-years) in the non-supplemented group (adjusted MRR=0.78 (0.46; 1.34)). The effect was similar in boys and girls. Vaccination cards were seen for 86% in 2007 and 84% in 2008. The effect of VAS in children who had measles vaccine as their last vaccine (2814 children, adjusted MRR=0.34 (0.14; 0.85)) differed from the effect in children who had diphtheria-tetanus-pertussis vaccine as their last vaccine (3680 children, adjusted MRR=1.29 (0.52; 3.22), p=0.04 for interaction). Conclusion The effect of VAS differed by most recent vaccination, being beneficial after measles vaccine but not after diphtheria-tetanus-pertussis vaccine.
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Affiliation(s)
- Ane B Fisker
- Bandim Health Project, INDEPTH Network, Bissau, Guinea-Bissau
- Bandim Health Project, Statens Serum Institut, Copenhagen S, Denmark
- Department of Biostatistics, Institute of Public Health, University of Aarhus, Aarhus, Denmark
| | - Peter Aaby
- Bandim Health Project, INDEPTH Network, Bissau, Guinea-Bissau
- Bandim Health Project, Statens Serum Institut, Copenhagen S, Denmark
| | - Carlito Bale
- Bandim Health Project, INDEPTH Network, Bissau, Guinea-Bissau
| | - Ibraima Balde
- Bandim Health Project, INDEPTH Network, Bissau, Guinea-Bissau
| | - Sofie Biering-Sørensen
- Bandim Health Project, INDEPTH Network, Bissau, Guinea-Bissau
- Bandim Health Project, Statens Serum Institut, Copenhagen S, Denmark
| | - Jane Agergaard
- Bandim Health Project, INDEPTH Network, Bissau, Guinea-Bissau
- Department of Infectious Diseases, Aarhus University Hospital, Skejby Sygehus, Aarhus, Denmark
| | - Cesario Martins
- Bandim Health Project, INDEPTH Network, Bissau, Guinea-Bissau
| | - Bo M Bibby
- Department of Biostatistics, Institute of Public Health, University of Aarhus, Aarhus, Denmark
| | - Christine S Benn
- Bandim Health Project, INDEPTH Network, Bissau, Guinea-Bissau
- Bandim Health Project, Statens Serum Institut, Copenhagen S, Denmark
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Mobin M, de Moraes Borba C, de Moura Filho OF, de Melo Neto AQ, Valenti VE, Vanderlei LCM, de Abreu LC. The presence of fungi on contact electrical stimulation electrodes and ultrasound transducers in physiotherapy clinics. Physiotherapy 2011; 97:273-7. [PMID: 22051582 DOI: 10.1016/j.physio.2010.11.010] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [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: 05/07/2010] [Accepted: 11/17/2010] [Indexed: 11/29/2022]
Abstract
OBJECTIVES To evaluate the presence of fungi on contact electrodes and ultrasound transducers from physiotherapy clinics. DESIGN Quantitative study conducted at the Laboratory of Microbiology and Immunology, Faculty of Health Sciences and Technology of Piauí - NOVAFAPI, Teresina, Brazil. SETTING Sample collection was performed in 10 clinics (20 ultrasound transducers and 20 contact electrodes). MAIN OUTCOME MEASURES Swabs were soaked with saline solution, inoculated in culture and incubated for filamentous fungi and yeast growth. RESULTS Fourteen taxons were identified: Acremomium hyalinulum (Sacc.), Aspergillus terreus, Candida albicans, Cladosporium cladosporioides, Cladosporium elatum, Cladosporium oxysporum, Cladosporium sphaerospermum, Cladosphialophora bantiana, Curvularia clavata, Curvularia senegalensis, Fusarium oxysporum, Penicillium decumbens, Scopulariopsis candida and Sporothrix schenckii. Aspergillus terreus, Cladosporium oxysporum, Sporothrix shenckii and Candida albicans were found most often on contact electrodes, and Penicillium decumbens and Cladosporium cladosporioides were found most often on ultrasound transducers. CONCLUSION Fungi were found on all of the contact electrodes and ultrasound transducers. Physiotherapy professionals need to improve the disinfection procedures for this equipment.
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Affiliation(s)
- Mitra Mobin
- Ciências Humanas e Tecnológicas do Piauí - NOVAFAPI, Teresina-PI, Brazil.
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