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Zong K, Yuan P, Wang R, Luo Q, Yang Y, Zhang X, Song Q, Du H, Gao C, Song J, Zhan W, Zhang M, Wang Y, Lin Q, Yao H, Xie B, Han J. Characteristics of innate, humoral and cellular immunity in children with non-severe SARS-CoV-2 infection. J Infect 2024; 88:158-166. [PMID: 38101522 DOI: 10.1016/j.jinf.2023.12.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2023] [Revised: 11/25/2023] [Accepted: 12/06/2023] [Indexed: 12/17/2023]
Abstract
The symptoms of children infected with SARS-CoV-2 are mainly asymptomatic, mild, moderate, and a few severe cases. To understand the immune response characteristics of children infected with SARS-COV-2 who do not develop severe cases, 82 children infected with the SARS-CoV-2 delta strain were recruited in this study. Our results showed that high levels of IgG, IgM, and neutralization antibodies appeared in children infected with SARS-CoV-2. SARS-CoV-2 induced upregulation of both pro-inflammatory factors including TNF-α and anti-inflammatory factors including IL-4 and IL-13 in the children, even IL-10. The expression of INF-α in infected children also showed a significant increase compared to healthy children. However, IL-6, one of the important inflammatory factors, did not show an increase in infected children. It is worth noting that a large number of chemokines reduced in the SARS-CoV-2-infected children. Subsequently, TCR Repertoire, TCRβ bias, and preferential usage were analyzed on data of TCR next-generation sequencing from 8 SARS-CoV-2-infected children and 8 healthy controls. We found a significant decrease in TCR clonal diversity and a significant increase in TCR clonal expansion in SARS-CoV-2-infected children compared to healthy children. The most frequent V and J genes in SARS-CoV-2 children were TRBV28 and TRBJ2-1. The most frequently VβJ gene pairing in SARS-CoV-2 infected children was TRBV20-1-TRBJ2-1. The strong antiviral antibody levels, low expression of key pro-inflammatory factors, significant elevation of anti-inflammatory factors, and downregulation of many chemokines jointly determine that SARS-CoV-2-infected children rarely develop severe cases. Overall, our findings shed a light on the immune response of non-severe children infected with SARS-CoV-2.
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Affiliation(s)
- Kexin Zong
- National Key Laboratory of Intelligent Tracking and Forecasting for Infectious Diseases, National Institute for Viral Disease Control and Prevention, Chinese Center for Disease Control and Prevention, 155 Changbai Rd, Beijing 102206, China
| | - Ping Yuan
- Fujian Provincial Key Laboratory of Zoonosis Research (Fujian Center for Disease Control and Prevention); The Practice Base on the School of Public Health, Fujian Medical University, Fuzhou, Fujian 350011, China
| | - Ruifang Wang
- National Key Laboratory of Intelligent Tracking and Forecasting for Infectious Diseases, National Institute for Viral Disease Control and Prevention, Chinese Center for Disease Control and Prevention, 155 Changbai Rd, Beijing 102206, China
| | - Qin Luo
- National Key Laboratory of Intelligent Tracking and Forecasting for Infectious Diseases, National Institute for Viral Disease Control and Prevention, Chinese Center for Disease Control and Prevention, 155 Changbai Rd, Beijing 102206, China
| | - Yanqing Yang
- National Key Laboratory of Intelligent Tracking and Forecasting for Infectious Diseases, National Institute for Viral Disease Control and Prevention, Chinese Center for Disease Control and Prevention, 155 Changbai Rd, Beijing 102206, China
| | - Xiaohong Zhang
- Fujian Provincial Key Laboratory of Zoonosis Research (Fujian Center for Disease Control and Prevention); The Practice Base on the School of Public Health, Fujian Medical University, Fuzhou, Fujian 350011, China
| | - Qinqin Song
- National Key Laboratory of Intelligent Tracking and Forecasting for Infectious Diseases, National Institute for Viral Disease Control and Prevention, Chinese Center for Disease Control and Prevention, 155 Changbai Rd, Beijing 102206, China
| | - Haijun Du
- National Key Laboratory of Intelligent Tracking and Forecasting for Infectious Diseases, National Institute for Viral Disease Control and Prevention, Chinese Center for Disease Control and Prevention, 155 Changbai Rd, Beijing 102206, China
| | - Chen Gao
- National Key Laboratory of Intelligent Tracking and Forecasting for Infectious Diseases, National Institute for Viral Disease Control and Prevention, Chinese Center for Disease Control and Prevention, 155 Changbai Rd, Beijing 102206, China
| | - Juan Song
- National Key Laboratory of Intelligent Tracking and Forecasting for Infectious Diseases, National Institute for Viral Disease Control and Prevention, Chinese Center for Disease Control and Prevention, 155 Changbai Rd, Beijing 102206, China
| | - Weihua Zhan
- Putian Center for Disease Control and Prevention, Putian, Fujian 351106, China
| | - Mengjie Zhang
- Putian Center for Disease Control and Prevention, Putian, Fujian 351106, China
| | - Yanhai Wang
- National Key Laboratory of Intelligent Tracking and Forecasting for Infectious Diseases, National Institute for Viral Disease Control and Prevention, Chinese Center for Disease Control and Prevention, 155 Changbai Rd, Beijing 102206, China
| | - Qunying Lin
- Department of Respiratory and Critical Care Medicine, Affiliated Hospital of Putian University, Putian, Fujian 351100, China
| | - Hailan Yao
- Department of Biochemistry & Immunology, Capital Institute of Pediatrics, YaBao Rd, Beijing 100020, China.
| | - Baosong Xie
- Department of Pulmonary and Critical Care Medicine, Fujian Provincial Hospital; Fujian Shengli Medical College, Fujian Medical University, Fuzhou, Fujian 350001, China.
| | - Jun Han
- National Key Laboratory of Intelligent Tracking and Forecasting for Infectious Diseases, National Institute for Viral Disease Control and Prevention, Chinese Center for Disease Control and Prevention, 155 Changbai Rd, Beijing 102206, China.
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Jhajra SD, Tanti SK, Sauparna C, Kumari S, Uddin MDW, Diwakar K. Six-month outcome of multisystem inflammatory syndrome with persistent neutropenia in neonate: A case report and review of literature. J Family Med Prim Care 2023; 12:2963-2966. [PMID: 38186808 PMCID: PMC10771208 DOI: 10.4103/jfmpc.jfmpc_690_23] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2023] [Revised: 07/03/2023] [Accepted: 07/10/2023] [Indexed: 01/09/2024] Open
Abstract
Multisystem inflammatory syndrome in Children (MIS-C) is a postinfectious immune mediated complications seen in children and develop after 4-6 weeks of severe acute respiratory syndrome coronavirus -2 (SARS-CoV-2) infection, however, it is rare in neonates. The index case was admitted at day 19 of life with complaints of fever, loose stools and rash. Baby was discharged after 1 weeks with diagnosis of Multisystem inflammatory syndrome with persistent neutropenia. We follow up the case at 6 weeks, 12 weeks and 6 months of life. Growth, neurodevelopment and hematological parameters were monitored over time. We are reporting this follow up of MIS-N with persistent neutropenia because it is very rare, organ specific manifestations, effect on growth & development is unknown and needs to be reported. Improvement in hematological parameters and markers of coagulopathy & systemic inflammation required months before they return to baseline. There are no long-term sequelae on growth and neurodevelopment.
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Affiliation(s)
- Sandeep D. Jhajra
- Department of Paediatrics, Tata Main Hospital, Jamshedpur, Jharkhand, India
| | - Sanjay K. Tanti
- Department of Paediatrics, Tata Main Hospital, Jamshedpur, Jharkhand, India
| | - Chhavi Sauparna
- Department of Paediatrics, Tata Main Hospital, Jamshedpur, Jharkhand, India
| | - Sarita Kumari
- Department of Obstetrics and Gynecology, Tata Main Hospital, Jamshedpur, Jharkhand, India
| | - MD W. Uddin
- Department of Paediatrics, Tata Main Hospital, Jamshedpur, Jharkhand, India
| | - Kumar Diwakar
- Department of Paediatrics, Tata Main Hospital, Jamshedpur, Jharkhand, India
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Martignoni MM, Mohammadi Z, Loredo-Osti JC, Hurford A. Extensive SARS-CoV-2 testing reveals BA.1/BA.2 asymptomatic rates and underreporting in school children. CANADA COMMUNICABLE DISEASE REPORT = RELEVE DES MALADIES TRANSMISSIBLES AU CANADA 2023; 49:155-165. [PMID: 38390394 PMCID: PMC10883462 DOI: 10.14745/ccdr.v49i04a08] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/24/2024]
Abstract
Background Case underreporting during the coronavirus disease 2019 (COVID-19) pandemic has been a major challenge to the planning and evaluation of public health responses. School children were often considered a less vulnerable population and underreporting rates may have been particularly high. In January 2022, the Canadian province of Newfoundland and Labrador (NL) was experiencing an Omicron variant outbreak (BA.1/BA.2 subvariants) and public health officials recommended that all returning students complete two rapid antigen tests (RATs) to be performed three days apart. Methods To estimate the prevalence of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), we asked parents and guardians to report the results of the RATs completed by K-12 students (approximately 59,000 students) using an online survey. Results When comparing the survey responses with the number of cases and tests reported by the NL testing system, we found that one out of every 4.3 (95% CI, 3.1-5.3) positive households were captured by provincial case count, with 5.1% positivity estimated from the RAT results and 1.2% positivity reported by the provincial testing system. Of positive test results, 62.9% (95% CI, 44.3-83.0) were reported for elementary school students, and the remaining 37.1% (95% CI, 22.7-52.9) were reported for junior high and high school students. Asymptomatic infections were 59.8% of the positive cases. Given the low survey participation rate (3.5%), our results may suffer from sample selection biases and should be interpreted with caution. Conclusion The underreporting ratio is consistent with ratios calculated from serology data and provides insights into infection prevalence and asymptomatic infections in school children; a currently understudied population.
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Affiliation(s)
- Maria M Martignoni
- Department of Mathematics and Statistics, Memorial University of Newfoundland, St. John's, NL
| | - Zahra Mohammadi
- Department of Mathematics and Statistics, University of Guelph, Guelph, ON
| | | | - Amy Hurford
- Department of Mathematics and Statistics, Memorial University of Newfoundland, St. John's, NL
- Biology Department, Memorial University of Newfoundland, St. John's, NL
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Abdulla ZA, Al-Bashir SM, Alzoubi H, Al-Salih NS, Aldamen AA, Abdulazeez AZ. The Role of Immunity in the Pathogenesis of SARS-CoV-2 Infection and in the Protection Generated by COVID-19 Vaccines in Different Age Groups. Pathogens 2023; 12:329. [PMID: 36839601 PMCID: PMC9967364 DOI: 10.3390/pathogens12020329] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2023] [Revised: 02/09/2023] [Accepted: 02/13/2023] [Indexed: 02/18/2023] Open
Abstract
This study aims to review the available data regarding the central role of immunity in combating SARS-CoV-2 infection and in the generation of protection by vaccination against COVID-19 in different age groups. Physiologically, the immune response and the components involved in it are variable, both functionally and quantitatively, in neonates, infants, children, adolescents, and adults. These immunological differences are mirrored during COVID-19 infection and in the post-vaccination period. The outcome of SARS-CoV-2 infection is greatly dependent on the reaction orchestrated by the immune system. This is clearly obvious in relation to the clinical status of COVID-19 infection, which can be symptomless, mild, moderate, or severe. Even the complications of the disease show a proportional pattern in relation to the immune response. On the contrary, the commonly used anti-COVID-19 vaccines generate protective humoral and cellular immunity. The magnitude of this immunity and the components involved in it are discussed in detail. Furthermore, many of the adverse effects of these vaccines can be explained on the basis of immune reactions against the different components of the vaccines. Regarding the appropriate choice of vaccine for different age groups, many factors have to be considered. This is a cornerstone, particularly in the following age groups: 1 day to 5 years, 6 to 11 years, and 12 to 17 years. Many factors are involved in deciding the route, doses, and schedule of vaccination for children. Another important issue in this dilemma is the hesitancy of families in making the decision about whether to vaccinate their children. Added to these difficulties is the choice by health authorities and governments concerning whether to make children's vaccination compulsory. In this respect, although rare and limited, adverse effects of vaccines in children have been detected, some of which, unfortunately, have been serious or even fatal. However, to achieve comprehensive control over COVID-19 in communities, both children and adults have to be vaccinated, as the former group represents a reservoir for viral transmission. The understanding of the various immunological mechanisms involved in SARS-CoV-2 infection and in the preparation and application of its vaccines has given the sciences a great opportunity to further deepen and expand immunological knowledge. This will hopefully be reflected positively on other diseases through gaining an immunological background that may aid in diagnosis and therapy. Humanity is still in continuous conflict with SARS-CoV-2 infection and will be for a while, but the future is expected to be in favor of the prevention and control of this disease.
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Affiliation(s)
| | - Sharaf M. Al-Bashir
- Department of Clinical Sciences, Faculty of Medicine, Yarmouk University, Irbid 21163, Jordan
| | - Hiba Alzoubi
- Department of Basic Medical Sciences, Faculty of Medicine, Yarmouk University, Irbid 21163, Jordan
| | - Noor S. Al-Salih
- Department of Basic Medical Sciences, Faculty of Medicine, Yarmouk University, Irbid 21163, Jordan
| | - Ala A. Aldamen
- Department of Basic Medical Sciences, Faculty of Medicine, Yarmouk University, Irbid 21163, Jordan
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Morawiec E, Bednarska-Czerwińska A, Pudełko A, Strychalska A, Broncel M, Sagan D, Madej A, Jasińska-Balwierz A, Staszkiewicz R, Sobański D, Boroń D, Pokusa F, Grabarek B. A Retrospective Population Study of 385 191 Positive Real-Time Reverse Transcription-Polymerase Chain Reaction Tests For SARS-CoV-2 from a Single Laboratory in Katowice, Poland from April 2020 to July 2022. Med Sci Monit 2023; 29:e938872. [PMID: 36636983 PMCID: PMC9817382 DOI: 10.12659/msm.938872] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Abstract
BACKGROUND This retrospective population study identified 385 191 positive real-time reverse transcription-polymerase chain reaction (RT-PCR) tests for the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) from a single laboratory in Katowice, Poland, from April 2020 to July 2022. MATERIAL AND METHODS The material was nasopharyngeal, nasopharyngeal swab or bronchial lavage, and bronchoalveolar lavage (BAL) to confirm or exclude SARS-CoV-2 infection with the RT-PCR technique. Personal data are use according to the Provisions on the Protection of Personal Data by the Gyn-Centrum laboratory. RESULTS In 9 months of 2020, the number of SARS-CoV-2 results was 88 986; in 2021, it was 168 439, and in the first 7 months of 2022, it was 12 786. In 2020, the highest number of positive results was recorded in the third quarter (83 094 cases); 2021, in the 1st, 2nd, and 4th quarters (58 712; 37 720; and 71 753 cases, respectively), and in 2022, in the 1st quarter (127 613 cases) of the year. A positive result was observed more often in women and people aged 30-39, followed by those 40-49 years. Patients aged 10-19 years comprised the smallest population of SARS-CoV-2-positive cases. CONCLUSIONS In the Polish population studied, from April 2020 to July 2022, the detection rates of SARS-CoV-2 positivity were significantly higher for women than for men and in the 30-49 age group for both sexes. Also, the infection detection rate of 385 191 out of 1 332 659 patient samples, or 28.9%, supports that the Polish society adhered to public health recommendations for infection control during the COVID-19 pandemic.
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Affiliation(s)
- Emilia Morawiec
- Department of Histology, Cytophysiology and Embryology, Academy of Silesia, Katowice, Poland
| | | | - Adam Pudełko
- Department of Molecular Biology, Gyncentrum Fertility Clinic, Sosnowiec, Poland
| | - Anna Strychalska
- Department of Molecular Biology, Gyncentrum Fertility Clinic, Sosnowiec, Poland
| | - Mateusz Broncel
- Department of Molecular Biology, Gyncentrum Fertility Clinic, Sosnowiec, Poland
| | - Dorota Sagan
- Medical Center Dormed Medical SP, Busko-Zdrój, Poland
| | - Andrzej Madej
- Department of Pharmacology, Academy of Silesia, Katowice, Poland
| | | | - Rafał Staszkiewicz
- Department of Histology, Cytophysiology and Embryology, Academy of Silesia, Katowice, Poland
| | - Dawid Sobański
- Department of Histology, Cytophysiology and Embryology, Academy of Silesia, Katowice, Poland
| | - Dariusz Boroń
- Department of Histology, Cytophysiology and Embryology, Academy of Silesia, Katowice, Poland
| | - Filip Pokusa
- Faculty of Economics and Pedagogy, Higher School of Management and Administration in Opole, Opole, Poland
| | - Beniamin Grabarek
- Department of Histology, Cytophysiology and Embryology, Academy of Silesia, Katowice, Poland
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Jhajra S, Sharma A, Diwakar K, Gupta BK, Tanti SK. Acute hepatitis with non-alcoholic fatty liver disease-expanding clinical spectrum in COVID-19 exposed children: case report and review of literature. Sudan J Paediatr 2023; 23:91-97. [PMID: 37663107 PMCID: PMC10468639 DOI: 10.24911/sjp.106-1636877693] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2021] [Accepted: 04/09/2022] [Indexed: 09/05/2023]
Abstract
Coronavirus disease (COVID-19) caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) can adversely affect extra-pulmonary organs, such as the liver, heart and gastrointestinal tract apart from lungs. Although studies are showing that serum glutamic-oxaloacetic transaminase and serum glutamic-pyruvic transaminase are mildly elevated along with serum bilirubin in adult patients with mild to severe cases of COVID-19 disease, data are limited regarding liver injury in children infected with COVID virus. We report the case of a 9-year-old female patient who developed signs and symptoms of upper respiratory tract infection due to COVID-19 virus infection and subsequently developed fatty liver disease on follow-up. To our knowledge, this is the second case report in children showing an association between non-alcoholic fatty liver disease and SARS-CoV-2 virus infection.
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Affiliation(s)
- Sandeep Jhajra
- Department of Paediatrics, Tata Main Hospital, Jamshedpur, India
| | - Akshada Sharma
- Department of Paediatrics, Post Graduate Institute of Medical Sciences, Rohtak, India
| | - Kumar Diwakar
- Department of Paediatrics, Tata Main Hospital, Jamshedpur, India
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Kakos CD, Ziogas IA, Tsoulfas G. Pediatric transplantation during the COVID-19 pandemic. World J Transplant 2022; 12:88-99. [PMID: 35663540 PMCID: PMC9136715 DOI: 10.5500/wjt.v12.i5.88] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/13/2021] [Revised: 03/16/2022] [Accepted: 04/20/2022] [Indexed: 02/06/2023] Open
Abstract
Children infected by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) seem to have a better prognosis than adults. Nevertheless, pediatric solid organ transplantation (SOT) has been significantly affected by the unprecedented coronavirus disease 2019 (COVID-19) pandemic during the pre-, peri-, and post-transplant period. Undoubtedly, immunosuppression constitutes a real challenge for transplant clinicians as increased immunosuppression may prolong disease recovery, while its decrease can contribute to more severe symptoms. To date, most pediatric SOT recipients infected by SARS-CoV-2 experience mild disease with only scarce reports of life-threatening complications. As a consequence, after an initial drop during the early phase of the pandemic, pediatric SOTs are now performed with the same frequency as during the pre-pandemic period. This review summarizes the currently available evidence regarding pediatric SOT during the COVID-19 pandemic.
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Affiliation(s)
| | - Ioannis A Ziogas
- Surgery Working Group, Society of Junior Doctors, Athens 15123, Greece
- Division of Hepatobiliary Surgery and Liver Transplantation, Department of Surgery, Vanderbilt University Medical Center, Nashville, TN 37232, United States
| | - Georgios Tsoulfas
- Department of Transplantation Surgery, Aristotle University School of Medicine, Thessaloniki 54622, Greece
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8
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Mnyambwa NP, Lubinza C, Ngadaya E, Senkoro M, Kimaro G, Kagaruki GB, Binagi S, Malima A, Kazyoba P, Oriyo N, Mghamba JM, Fredrick A, Ramaiya K, Zumla A, Jaffar S, Mfinanga SG. Clinical characteristics and outcomes of confirmed COVID-19 patients in the early months of the pandemic in Tanzania: a multicenter cohort study. IJID REGIONS 2022; 2:118-125. [PMID: 35721420 PMCID: PMC8734168 DOI: 10.1016/j.ijregi.2021.12.010] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/19/2021] [Accepted: 12/26/2021] [Indexed: 01/08/2023]
Abstract
Data on COVID-19 in Tanzania are scant Clinical outcomes for 121 patients infected with SARS-CoV-2 were examined Three-quarters of all COVID-19 patients were aged < 60 years High ICU admission rates and death rates were observed
Background A prospective cohort study of the clinical presentations and management outcomes of laboratory-confirmed COVID-19 patients in the early months of the pandemic was performed at two hospitals in Dar es Salaam, Tanzania. Methods Between April 1 and May 31, 2020, laboratory-confirmed COVID-19 patients seen at two tertiary facilities were consecutively enrolled in the study and followed up for 21 days. Results 121 COVID-19 patients were enrolled; 112 (92.6%) were admitted while nine (7.4%) were seen as outpatients. The median (IQR) age of patients was 41 (30–54) years; 72 (59.5%) were male. The median (IQR) reported days from hospital admission to recovery and to death were 10 (6–18) and 5.5 (3–9), respectively. Forty-four (36.4%) patients had at least one underlying condition. Of the 112 admissions, 17 (15.2%) went to ICU, of whom 14 (82.3%) died. At the end of follow-up, 93 (76.9%) recovered, 18 (14.9%) died, seven (5.8%) remained asymptomatic, and one (0.8%) remained ill. Conclusion Three-quarters of all COVID-19 patients were less than 60 years, reflecting Africa's young population . High ICU admissions and mortality were observed.
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Rudan I, Adeloye D, Katikireddi SV, Murray J, Simpson C, Shah SA, Robertson C, Sheikh A. The COVID-19 pandemic in children and young people during 2020-2021: Learning about clinical presentation, patterns of spread, viral load, diagnosis and treatment. J Glob Health 2021; 11:01010. [PMID: 35047182 PMCID: PMC8763336 DOI: 10.7189/jogh.11.01010] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Affiliation(s)
- Igor Rudan
- Centre for Global Health, Usher Institute, The University of Edinburgh, Edinburgh, UK
| | - Davies Adeloye
- Centre for Global Health, Usher Institute, The University of Edinburgh, Edinburgh, UK
| | | | - Josie Murray
- COVID-19 Surveillance Lead, Public Health Scotland, Fife, UK
| | - Colin Simpson
- School of Health, Wellington Faculty of Health, Victoria University of Wellington, New Zealand
- Usher Institute, The University of Edinburgh, Edinburgh, UK
| | | | - Chris Robertson
- Department of Mathematics and Statistics, University of Strathclyde, Glasgow, UK and Public Health Scotland, Glasgow, UK
| | - Aziz Sheikh
- Usher Institute, The University of Edinburgh, Edinburgh, UK
| | - EAVE II collaboration
- Centre for Global Health, Usher Institute, The University of Edinburgh, Edinburgh, UK
- MRC/CSO Social & Public Health Sciences Unit, Glasgow, UK
- COVID-19 Surveillance Lead, Public Health Scotland, Fife, UK
- School of Health, Wellington Faculty of Health, Victoria University of Wellington, New Zealand
- Usher Institute, The University of Edinburgh, Edinburgh, UK
- Department of Mathematics and Statistics, University of Strathclyde, Glasgow, UK and Public Health Scotland, Glasgow, UK
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Qureshi SS, Ramraj D, Chinnaswamy G, Parambil BC, Prasad M, Amin N, Ramanathan S, Khanna N, Laskar S. Assessment of outcomes of elective cancer surgeries in children during coronavirus disease 2019 pandemic: Retrospective cohort study from a tertiary cancer center in India. Medicine (Baltimore) 2021; 100:e26752. [PMID: 34477115 PMCID: PMC8415926 DOI: 10.1097/md.0000000000026752] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/08/2021] [Accepted: 07/08/2021] [Indexed: 01/05/2023] Open
Abstract
To describe the outcomes of elective cancer surgeries and adverse consequences on the patients and medical staff due to the surgical interventions in children during the Coronavirus Disease 2019 (COVID-19) pandemic.The study included children younger than 15 years who underwent elective cancer surgeries from March 4, 2020 and December 3, 2020.A total of 121 patients (62% male; median age, 3 years) underwent surgery. The surgical procedures included nephrectomies (n = 18), neuroblastoma (n = 26) and soft tissue tumor resections (n = 24) and complex surgical procedures like extended liver resections (n = 2), intra-atrial thrombectomy under cardiopulmonary bypass (n = 2), pancreatoduodenectomy (n = 1), and free microvascular flaps (n = 7). Clavien-Dindo Grade III complications were 5% (n = 6), and there were no postoperative deaths. Preoperative COVID-19 testing was performed in 82% of children, and only 2% showed severe acute respiratory syndrome coronavirus 2 positivity. Postoperatively, 26 children were tested because of specific symptoms and, 6 tested positive for severe acute respiratory syndrome coronavirus 2. Except for a median delay of 23 days in treatment, none of the patients with COVID-19 required critical hospital management. None of the surgical residents or faculty acquired COVID-19, while 4 each medical and support staff were tested positive in the study period.COVID-19 was not a deterrent for continued cancer care, and surgeries could be safely performed adopting universal preventive measures without any added morbidity from COVID-19. Caregivers and centers dealing with childhood cancers can be encouraged to sustain or seek early healthcare.
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Affiliation(s)
- Sajid S. Qureshi
- Division of Paediatric Surgical Oncology, Department of Surgical Oncology, Tata Memorial Hospital and Advanced Centre for Training Research and Education in Cancer (ACTREC), Tata Memorial Centre, Mumbai, India
- Homi Bhabha National Institute (HBNI), Mumbai, India
| | - Deepak Ramraj
- Division of Paediatric Surgical Oncology, Department of Surgical Oncology, Tata Memorial Hospital and Advanced Centre for Training Research and Education in Cancer (ACTREC), Tata Memorial Centre, Mumbai, India
| | - Girish Chinnaswamy
- Homi Bhabha National Institute (HBNI), Mumbai, India
- Division of Pediatric Oncology, Department of Medical Oncology, Tata Memorial Hospital and Advanced Centre for Training Research and Education in Cancer (ACTREC), Tata Memorial Centre, Mumbai, India
| | - Badira C. Parambil
- Homi Bhabha National Institute (HBNI), Mumbai, India
- Division of Pediatric Oncology, Department of Medical Oncology, Tata Memorial Hospital and Advanced Centre for Training Research and Education in Cancer (ACTREC), Tata Memorial Centre, Mumbai, India
| | - Maya Prasad
- Homi Bhabha National Institute (HBNI), Mumbai, India
- Division of Pediatric Oncology, Department of Medical Oncology, Tata Memorial Hospital and Advanced Centre for Training Research and Education in Cancer (ACTREC), Tata Memorial Centre, Mumbai, India
| | - Nayana Amin
- Homi Bhabha National Institute (HBNI), Mumbai, India
- Department of Anaesthesia, Tata Memorial Hospital, and Advanced Centre for Training Research and Education in Cancer (ACTREC), Tata Memorial Centre, Mumbai, India
| | - Subramaniam Ramanathan
- Homi Bhabha National Institute (HBNI), Mumbai, India
- Division of Pediatric Oncology, Department of Medical Oncology, Tata Memorial Hospital and Advanced Centre for Training Research and Education in Cancer (ACTREC), Tata Memorial Centre, Mumbai, India
| | - Nehal Khanna
- Homi Bhabha National Institute (HBNI), Mumbai, India
- Department of Radiation Oncology, Tata Memorial Hospital and Advanced Centre for Training Research and Education in Cancer (ACTREC), Tata Memorial Centre, Mumbai, India
| | - Siddharth Laskar
- Homi Bhabha National Institute (HBNI), Mumbai, India
- Department of Radiation Oncology, Tata Memorial Hospital and Advanced Centre for Training Research and Education in Cancer (ACTREC), Tata Memorial Centre, Mumbai, India
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Elimian KO, Aderinola O, Gibson J, Myles P, Ochu CL, King C, Okwor T, Gaudenzi G, Olayinka A, Zaiyad HG, Ohonsi C, Ebhodaghe B, Dan-Nwafor C, Nwachukwu W, Abdus-Salam IA, Akande OW, Falodun O, Arinze C, Ezeokafor C, Jafiya A, Ojimba A, Aremu JT, Joseph E, Bowale A, Mutiu B, Saka B, Jinadu A, Hamza K, Ibeh C, Bello S, Asuzu M, Mba N, Oladejo J, Ilori E, Alfvén T, Igumbor E, Ihekweazu C. Assessing the capacity of symptom scores to predict COVID-19 positivity in Nigeria: a national derivation and validation cohort study. BMJ Open 2021; 11:e049699. [PMID: 34479936 PMCID: PMC8421116 DOI: 10.1136/bmjopen-2021-049699] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
OBJECTIVES This study aimed to develop and validate a symptom prediction tool for COVID-19 test positivity in Nigeria. DESIGN Predictive modelling study. SETTING All Nigeria States and the Federal Capital Territory. PARTICIPANTS A cohort of 43 221 individuals within the national COVID-19 surveillance dataset from 27 February to 27 August 2020. Complete dataset was randomly split into two equal halves: derivation and validation datasets. Using the derivation dataset (n=21 477), backward multivariable logistic regression approach was used to identify symptoms positively associated with COVID-19 positivity (by real-time PCR) in children (≤17 years), adults (18-64 years) and elderly (≥65 years) patients separately. OUTCOME MEASURES Weighted statistical and clinical scores based on beta regression coefficients and clinicians' judgements, respectively. Using the validation dataset (n=21 744), area under the receiver operating characteristic curve (AUROC) values were used to assess the predictive capacity of individual symptoms, unweighted score and the two weighted scores. RESULTS Overall, 27.6% of children (4415/15 988), 34.6% of adults (9154/26 441) and 40.0% of elderly (317/792) that had been tested were positive for COVID-19. Best individual symptom predictor of COVID-19 positivity was loss of smell in children (AUROC 0.56, 95% CI 0.55 to 0.56), either fever or cough in adults (AUROC 0.57, 95% CI 0.56 to 0.58) and difficulty in breathing in the elderly (AUROC 0.53, 95% CI 0.48 to 0.58) patients. In children, adults and the elderly patients, all scoring approaches showed similar predictive performance. CONCLUSIONS The predictive capacity of various symptom scores for COVID-19 positivity was poor overall. However, the findings could serve as an advocacy tool for more investments in resources for capacity strengthening of molecular testing for COVID-19 in Nigeria.
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Affiliation(s)
- Kelly Osezele Elimian
- Nigeria Centre for Disease Control, Abuja, Nigeria
- Department of Global Public Health, Karolinska Institutet, Stockholm, Sweden
| | | | - Jack Gibson
- Department of Epidemiology and Public Health, University of Nottingham, Nottingham, UK
| | - Puja Myles
- Department of Epidemiology and Public Health, University of Nottingham, Nottingham, UK
| | | | - Carina King
- Department of Global Public Health, Karolinska Institutet, Stockholm, Sweden
| | - Tochi Okwor
- Nigeria Centre for Disease Control, Abuja, Nigeria
| | - Giulia Gaudenzi
- Department of Global Public Health, Karolinska Institutet, Stockholm, Sweden
| | | | | | | | | | | | | | | | - Oluwatosin Wuraola Akande
- Nigeria Centre for Disease Control, Abuja, Nigeria
- Department of Epidemiology and Community Health, University of Ilorin Teaching Hospital, Ilorin, Nigeria
| | | | | | | | | | | | | | - Emmanuel Joseph
- Kaduna State Infectious Disease Control Center Community Medicine, Kaduna, Nigeria
| | | | | | - Babatunde Saka
- Lagos State Government Ministry of Health, Ikeja, Nigeria
| | | | - Khadeejah Hamza
- Department of Community Medicine, Ahmadu Bello University, Zaria, Nigeria
| | - Christian Ibeh
- Department of Community Medicine, Nnamdi Azikiwe University Teaching Hospital, Nnewi, Nigeria
| | - Shaibu Bello
- Department of Medical Education, Usmanu Danfodiyo University, Sokoto, Nigeria
| | - Michael Asuzu
- Department of Community Medicine, University College Hospital, Ibadan, Nigeria
| | - Nwando Mba
- Nigeria Centre for Disease Control, Abuja, Nigeria
| | - John Oladejo
- Nigeria Centre for Disease Control, Abuja, Nigeria
| | - Elsie Ilori
- Nigeria Centre for Disease Control, Abuja, Nigeria
| | - Tobias Alfvén
- Department of Global Public Health, Karolinska Institutet, Stockholm, Sweden
| | - Ehimario Igumbor
- Nigeria Centre for Disease Control, Abuja, Nigeria
- School of Public Health, University of the Western Cape, Bellville, South Africa
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12
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Bağcı Z, Keçeli AM. Comparison of computed tomography (CT) findings with RT-PCR in the diagnosis of COVID-19 in children. Pediatr Pulmonol 2021; 56:1985-1991. [PMID: 33902160 PMCID: PMC8242773 DOI: 10.1002/ppul.25426] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/24/2020] [Revised: 03/30/2021] [Accepted: 04/11/2021] [Indexed: 01/08/2023]
Abstract
AIM This study aimed to compare chest computed tomography (CT) findings with reverse-transcription polymerase chain reaction (RT-PCR) test results in children with probable or definitive diagnosis of coronavirus disease 2019 (COVID-19). METHODS In this retrospective archive study, pediatric patients who were followed up in the hospital with a possible or definitive diagnosis of COVID-19 and who had chest CT at presentation were included. CT scan images of the patients were reinterpreted by a pediatric radiologist and compared with their RT-PCR test results. RESULTS Of the total of 89 patients, 33 had negative and 56 had positive RT-PCR tests. The presence of pulmonary lesions and consolidation was statistically significantly higher in the RT-PCR negative group than in the RT-PCR positive group (p = 0.037 and 0.001, respectively). Lobe involvement of 0%-25% was higher in the RT-PCR positive group (p = 0.001), and lobe involvements of 25%-50% and 50%-75% were significantly higher in the RT-PCR negative group (p = 0.001 and 0.005, respectively). Central and perihilar involvement was found to be statistically significant in the RT-PCR negative group (p = 0.008 and 0.005, respectively). CONCLUSION Chest CT findings may provide some clues in predicting RT-PCR positivity in children with a probable diagnosis of COVID-19. Lobe involvement percentage of up to 25% is a finding in favor of patients with positive RT-PCR test, whereas 25%-75% lobe involvement, central and perihilar involvement, and consolidation can be interpreted in favor of patients with negative RT-PCR test.
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Affiliation(s)
- Zafer Bağcı
- Department of Pediatrics, Konya Education and Research Hospital, University of Health Sciences, Konya, Turkey
| | - Avni Merter Keçeli
- Department of Pediatric Radiology, Konya Education and Research Hospital, University of Health Sciences, Konya, Turkey
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13
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Warner S, Richter A, Stamataki Z, Kelly D. Understanding COVID-19: are children the key? BMJ Paediatr Open 2021; 5:e001063. [PMID: 34192201 PMCID: PMC8136805 DOI: 10.1136/bmjpo-2021-001063] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/15/2021] [Revised: 04/23/2021] [Accepted: 05/01/2021] [Indexed: 12/11/2022] Open
Abstract
The devastating impact of the COVID-19 pandemic on global health and economic stability is immeasurable. The situation is dynamic and fast-evolving, with the world facing new variants of concern which may have immune escape potential. With threatened treatment and preventative strategies at stake, and the prospect of reinfection prolonging the pandemic, it is more crucial than ever to understand the pathogenesis of SARS-CoV-2 infection, which intriguingly disproportionately affects adults and the elderly. Children infected with SARS-CoV-2 remain largely asymptomatic or undergo a transient mild illness. Understanding why children have a milder phenotype and a significant survival advantage may help identify modifiable risk factors in adults. Current evidence suggests adults with COVID-19 show variability in innate and adaptive immune responses, which result in uncontrolled proinflammatory cytokine production in some patients, leading to severe disease and mortality. Children with acute COVID-19 infection seldom progress to acute respiratory distress syndrome and are less likely to exhibit the cytokine storm which is so prominent in adults. Even with the Kawasaki-like illness, a hyperinflammation syndrome also known as paediatric multisystem inflammatory syndrome temporally associated with SARS-CoV-2, mortality is low. The key to successfully combating SARS-CoV-2 and future zoonotic pandemics may lie in understanding these critical differences and merits focused consideration and research. The impact of community transmission among asymptomatic children is unknown; sustained global decline in infection rates and control of the COVID-19 pandemic may not be achieved until vaccination of children occurs. In this review, we discuss the fundamental differences in the immune response between children and adults in the fight against SARS-CoV-2.
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Affiliation(s)
- Suz Warner
- Institute of Immunology and Immunotherapy, University of Birmingham, Birmingham, UK
| | - Alex Richter
- Institute of Immunology and Immunotherapy, University of Birmingham, Birmingham, UK
| | - Zania Stamataki
- Institute of Immunology and Immunotherapy, University of Birmingham, Birmingham, UK
| | - Deirdre Kelly
- The Liver Unit, Birmingham Women's and Children's NHS Foundation Trust, Birmingham, UK
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14
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Di Giorgio A, Hartleif S, Warner S, Kelly D. COVID-19 in Children With Liver Disease. Front Pediatr 2021; 9:616381. [PMID: 33777864 PMCID: PMC7991080 DOI: 10.3389/fped.2021.616381] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/12/2020] [Accepted: 02/19/2021] [Indexed: 12/15/2022] Open
Abstract
Background: The global pandemic caused by novel Coronavirus SARS-CoV-2 disease (COVID-19) is a major threat to the general population and for patients with pre-existing chronic conditions. We report data concerning SARS-CoV-2 infection in children with chronic liver disease (CLD). Methods: A literature review using the online database PubMed was performed to summarize available findings on the association between pre-existing liver disease and COVID-19 infection in children. Results: Children with COVID-19 have preserved effector and immunosuppressive components resulting in a milder disease compared to adults. The most common hepatic manifestation is an elevation of hepatic transaminases. Liver damage may be directly caused by viral infection of liver cells, by medications or by the chronic hypoxia seen in COVID-19 patients. A multicenter study reported that the majority of children with a CLD remained healthy during the outbreak. Similarly, studies reported that children on immunosuppressive treatment, including patients with autoimmune liver disease (AILD) and liver transplantation (LT), maintained good health during the outbreak without experiencing major complications even if infected with COVID-19. Conclusion: COVID-19-related liver injury presents with a mild elevation of transaminases, although its clinical significance is unclear. Children with CLD, including those with AILD and post-LT, do not have an increased risk for severe disease course of SARS-CoV-2 infection with little or no liver dysfunction. These data highlight the necessity to ensure normal standards of care while adhering to national Covid-19 guidelines, and particularly to maintain immunosuppressive medication to prevent relapse or rejection. Further research is required to evaluate the differences in clinical course between immunosuppressed adults and children and in particular whether asymptomatic infection is a concern.
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Affiliation(s)
- Angelo Di Giorgio
- Paediatric Liver, Gastroenterology and Transplantation, Hospital Papa Giovanni XXIII, Bergamo, Italy
| | - Steffen Hartleif
- Paediatric Gastroenterology and Hepatology, University Children's Hospital, University of Tübingen, Tübingen, Germany
| | - Suzan Warner
- Institute of Immunology and Immunotherapy, University of Birmingham, Birmingham, United Kingdom
- The Liver Unit, Birmingham Women's and Children's Hospital, University of Birmingham, Birmingham, United Kingdom
| | - Deirdre Kelly
- The Liver Unit, Birmingham Women's and Children's Hospital, University of Birmingham, Birmingham, United Kingdom
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15
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Rickett CD, Maschhoff KJ, Sukumar SR. Does tetanus vaccination contribute to reduced severity of the COVID-19 infection? Med Hypotheses 2021; 146:110395. [PMID: 33341328 PMCID: PMC7695568 DOI: 10.1016/j.mehy.2020.110395] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2020] [Accepted: 11/06/2020] [Indexed: 02/09/2023]
Abstract
We present the hypothesis to the scientific community actively designing clinical trials and recommending public health guidelines to control the pandemic that - "Tetanus vaccination may be contributing to reduced severity of the COVID-19 infection" - and urge further research to validate or invalidate the effectiveness of the tetanus toxoid vaccine against COVID-19. This hypothesis was revealed by an explainable artificial intelligence system unleashed on open public biomedical datasets. As a foundation for scientific rigor, we describe the data and the artificial intelligence system, document the provenance and methodology used to derive the hypothesis and also gather potentially relevant data/evidence from recent studies. We conclude that while correlations may not be reason for causation, correlations from multiple sources is more than a serendipitous coincidence that is worthy of further and deeper investigation.
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16
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Miri SM, Noorbakhsh F, Mohebbi SR, Ghaemi A. Higher prevalence of asymptomatic or mild COVID-19 in children, claims and clues. J Med Virol 2020; 92:2257-2259. [PMID: 32470174 PMCID: PMC7283682 DOI: 10.1002/jmv.26069] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2020] [Accepted: 05/26/2020] [Indexed: 12/15/2022]
Affiliation(s)
| | | | - Seyed Reza Mohebbi
- Gastroenterology and Liver Diseases Research Center, Research Institute for Gastroenterology and Liver DiseasesShahid Beheshti University of Medical SciencesTehranIran
| | - Amir Ghaemi
- Department of Influenza and Other Respiratory VirusesPasteur Institute of IranTehranIran
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17
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Children were less frequently infected with SARS-CoV-2 than adults during 2020 COVID-19 pandemic in Warsaw, Poland. Eur J Clin Microbiol Infect Dis 2020; 40:541-547. [PMID: 32986153 PMCID: PMC7520378 DOI: 10.1007/s10096-020-04038-9] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2020] [Accepted: 09/10/2020] [Indexed: 12/23/2022]
Abstract
Clinical data suggest that during the current COVID-19 pandemic, children are less prone than adults to SARS-CoV-2 infection. Our purpose was to determine the frequency of SARS-CoV-2 in children vs. adults during the 2020 pandemic in Warsaw, Poland, and to investigate whether RSV and/or influenza A/B infections were associated with SARS-CoV-2 infections. We present results of RT-PCR tests for SARS-CoV-2 performed in Warsaw, Poland. Some of the pediatric subjects were also PCR-tested for RSV, and A and B influenza. We compared the test results from the four groups of symptomatic and asymptomatic subjects: 459 symptomatic pediatric patients (children 0–18 years old), 1774 symptomatic adults, 445 asymptomatic children, and 239 asymptomatic adults. 3.26% (15/459) of symptomatic pediatric patients were positive for SARS-CoV-2 in contrast to 5.58% (99/1774) of symptomatic adults (p = 0.0448). There were no SARS-CoV-2 positive cases in the group of asymptomatic children (0/445) and two positive cases in the group of asymptomatic adults (2/239), i.e., 0.83%. In the group of symptomatic pediatric patients, 17.14% (6/35) (p = 0.0002) were positive for RSV, 8.16% (4/49) were positive for influenza A, and 2.04% (1/49), thus 10.20% (5/49) (p = 0.0176) for influenza A/B. Children were less prone to SARS-CoV-2 infection than the adults during the COVID-19 pandemic in Warsaw. Higher percentage of symptomatic children was infected with RSV or influenza A/B than with SARS-CoV-2. This suggests a necessity for the testing for all these viruses for an early identification and isolation of SARS-CoV-2-positive patients for an ensuing 2020 autumn return of COVID-19.
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18
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George S, Ansari MS, Kalliath A, Khan MJ, Abdullah MS, Asli R, Momin RN, Mani BI, Chong PL, Chong VH. COVID-19 in children in Brunei Darussalam: Higher incidence but mild manifestations. J Med Virol 2020; 93:199-201. [PMID: 32687229 PMCID: PMC7405023 DOI: 10.1002/jmv.26310] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2020] [Accepted: 07/13/2020] [Indexed: 12/24/2022]
Affiliation(s)
- Shaji George
- Department of Pediatrics, PMMPMHAMB Hospital, Tutong, Brunei
| | | | - Anto Kalliath
- Department of Pediatrics, PMMPMHAMB Hospital, Tutong, Brunei
| | | | - Muhammad Syafiq Abdullah
- Department of Medicine, RIPAS Hospital, Bandar Seri Begawan, Brunei.,Institute of Health Science, PAPRSB, Unversiti Brunei Darussalam, Bandar Seri Begawan, Brunei
| | - Rosmonaliza Asli
- Department of Medicine, RIPAS Hospital, Bandar Seri Begawan, Brunei
| | | | - Babu Ivan Mani
- Institute of Health Science, PAPRSB, Unversiti Brunei Darussalam, Bandar Seri Begawan, Brunei
| | - Pui Lin Chong
- Department of Medicine, RIPAS Hospital, Bandar Seri Begawan, Brunei
| | - Vui Heng Chong
- Department of Medicine, RIPAS Hospital, Bandar Seri Begawan, Brunei.,Institute of Health Science, PAPRSB, Unversiti Brunei Darussalam, Bandar Seri Begawan, Brunei.,Department of Medicine, PMMPHAMB Hospital, Tutong, Brunei
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