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Oliveira FDS, Guimarães RA, Afonso ET, Costa LDC, Siqueira KM, Marques SM, Rosso CFW, da Costa PSS, Naghettini AV, Barbosa MA, Pagotto V, Aredes NDA. Environmental and behavioral factors associated with household transmission of SARS-CoV-2 in children and adolescents. Front Pediatr 2023; 11:1239372. [PMID: 37928354 PMCID: PMC10623120 DOI: 10.3389/fped.2023.1239372] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/13/2023] [Accepted: 08/31/2023] [Indexed: 11/07/2023] Open
Abstract
Objective To analyze the association between risk behaviors and environmental factors and SARS-CoV-2 infection in children and adolescents in the family environment. Methods Cross-sectional study. A total of 267 children and adolescents aged 5-19 years who have contact with COVID-19-positive essential workers were tested between June and October 2020. Behavioral and environmental variables associated with SARS-CoV-2 infection were investigated. Association between these variables was performed using Poisson regression. Results SARS-CoV-2 prevalence was 25.1%. Following the confirmation of COVID-19 diagnosis of the index case, 92.1% of adults reported hand hygiene and 83.5% showed habits of respiratory etiquette. However, 12.7% wore masks in common areas of the residence before COVID-19. Sharing common objects was a risk factor for SARS-CoV-2 infection in the sample. Conclusion Sharing objects among family members was identified as a risk factor associated with SARS-CoV-2 infection in children and adolescents who lived with infected adults. There was high frequency of hand hygiene and low prevalence of mask use.
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Affiliation(s)
| | - Rafael Alves Guimarães
- Nursing School, Federal University of Goiás, Goiânia, Brazil
- Institute of Tropical Pathology and Public Health, Federal University of Goiás, Goiânia, Brazil
| | | | | | | | | | | | | | | | - Maria Alves Barbosa
- Nursing School, Federal University of Goiás, Goiânia, Brazil
- Medical School, Federal University of Goiás, Goiânia, Brazil
| | - Valéria Pagotto
- Nursing School, Federal University of Goiás, Goiânia, Brazil
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Mansour Ghanaie R, Boone I, Shamshiri AR, Karimi A, Amirali A, Marhamati N, Rostami MH, Pashaei N, Janbazi S, Azimi L, Khodaei H, Fallah F, Eckmanns T, Jansen A, Baradaran HR, Momeny Ourimi M, Maham S, Elikaei A, Alebouyeh M. Seroepidemiological and Molecular Survey for the Detection of SARS-CoV-2 Infection among Children in Iran, September 2020 to June 2021: 1-Year Cross-Sectional Study. Microorganisms 2023; 11:1672. [PMID: 37512845 PMCID: PMC10386463 DOI: 10.3390/microorganisms11071672] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2023] [Revised: 06/24/2023] [Accepted: 06/25/2023] [Indexed: 07/30/2023] Open
Abstract
A population-based seroepidemiological and molecular survey on severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) was performed to detect induced antibodies to prior exposure and active infection of children aged 14 years or less in Tehran between 19 September 2020 and 21 June 2021. Moreover, correlations between the children's demographic data and coronavirus disease 2019 (COVID-19) symptoms with the infection status were investigated. Out of 1517 participants, cardinal symptoms of COVID-19 (fever > 38 °C and/or cough and/or diarrhea) were detected in 18%, and serological history of SARS-CoV-2 infection and polymerase chain reaction (PCR) positivity were confirmed in 33.2% and 10.7% of the weighted population, respectively. The prevalence of SARS-CoV-2 infection was significantly higher among 10-14-year-old children. Active infection was significantly higher in symptomatic children and during autumn 2020 and spring 2021. The quantitative reverse transcription real-time PCR (RT-qPCR) positivity was significantly higher among families with a lower socioeconomic status, whereas no association between RT-qPCR or seropositivity was determined with household size, underlying diseases, or gender. In conclusion, high SARS-CoV-2 infection prevalence and seroprevalence were detected in children in Tehran in different seasons. Infection prevalence was significantly higher in older children and in those with a positive history of close contact with infected cases and/or lower socioeconomic status.
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Affiliation(s)
- Roxana Mansour Ghanaie
- Pediatric Infections Research Centre, Research Institute for Children's Health, Shahid Beheshti University of Medical Sciences, Tehran 1546815514, Iran
| | - Idesbald Boone
- Department of Infectious Disease Epidemiology, Robert Koch Institute, 13353 Berlin, Germany
| | - Ahmad Reza Shamshiri
- Research Center for Caries Prevention, Dentistry Research Institute, Tehran University of Medical Sciences, Tehran 1439955934, Iran
- Department of Community Oral Health, School of Dentistry, Tehran University of Medical Sciences, Tehran 1439955934, Iran
| | - Abdollah Karimi
- Pediatric Infections Research Centre, Research Institute for Children's Health, Shahid Beheshti University of Medical Sciences, Tehran 1546815514, Iran
| | - Arezu Amirali
- Pediatric Infections Research Centre, Research Institute for Children's Health, Shahid Beheshti University of Medical Sciences, Tehran 1546815514, Iran
- Department of Microbiology, Faculty of Biological Sciences, Alzahra University, Tehran 1993893973, Iran
| | - Noushin Marhamati
- Pediatric Infections Research Centre, Research Institute for Children's Health, Shahid Beheshti University of Medical Sciences, Tehran 1546815514, Iran
| | | | - Niloofar Pashaei
- Central Laboratory, Deputy of Public Health, Shahid Beheshti University of Medical Sciences, Tehran 1985717443, Iran
| | - Shahriar Janbazi
- Department of Health and Medical Medicine, Faculty of Medicine, Shahid Beheshti University of Medical Sciences, Tehran 1983969411, Iran
| | - Leila Azimi
- Pediatric Infections Research Centre, Research Institute for Children's Health, Shahid Beheshti University of Medical Sciences, Tehran 1546815514, Iran
| | - Hannan Khodaei
- Pediatric Infections Research Centre, Research Institute for Children's Health, Shahid Beheshti University of Medical Sciences, Tehran 1546815514, Iran
| | - Fatemeh Fallah
- Pediatric Infections Research Centre, Research Institute for Children's Health, Shahid Beheshti University of Medical Sciences, Tehran 1546815514, Iran
| | - Tim Eckmanns
- Department of Infectious Disease Epidemiology, Robert Koch Institute, 13353 Berlin, Germany
| | - Andreas Jansen
- Centre for International Health Protection, Robert Koch Institute, 13353 Berlin, Germany
| | - Hamid Reza Baradaran
- Department of Epidemiology, School of Public Health, Iran University of Medical Sciences, Tehran 1449614535, Iran
| | - Maryam Momeny Ourimi
- Mofid Children's Hospital, Shahid Beheshti University of Medical Sciences, Tehran 1546815514, Iran
| | - Saeed Maham
- Pediatric Infections Research Centre, Research Institute for Children's Health, Shahid Beheshti University of Medical Sciences, Tehran 1546815514, Iran
| | - Ameneh Elikaei
- Department of Microbiology, Faculty of Biological Sciences, Alzahra University, Tehran 1993893973, Iran
| | - Masoud Alebouyeh
- Pediatric Infections Research Centre, Research Institute for Children's Health, Shahid Beheshti University of Medical Sciences, Tehran 1546815514, Iran
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Menezes DC, Perico J, Martins BL, Belone ADFF, Fortaleza CMCB, Santana FCDS, Latini ACP, Souza VNBD. Time between symptom and testing in relation to familial transmission of severe acute respiratory syndrome coronavirus 2. CIENCIA & SAUDE COLETIVA 2023; 28:1751-1756. [PMID: 37255151 DOI: 10.1590/1413-81232023286.16112022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2022] [Accepted: 11/08/2022] [Indexed: 06/01/2023] Open
Abstract
Brazil has a huge number of cases and deaths due to coronavirus disease 2019 (COVID-19); however, few studies have dealt with severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection among familial contacts in Brazil. Here, we report our findings on transmission in a family-based study in Bauru, São Paulo, Brazil. The study, conducted from July to November 2020, comprised 974 individuals with 233 index patients and 741 familial contacts. Familial contacts were evaluated using the rapid COVID-19 Ag ECO and reverse transcription-polymerase chain reaction (RT-PCR) tests immediately after the index patient diagnosis. The antigen-based rapid test was validated in 121 individuals using RT-PCR as the gold standard. Additionally, 30 days later, familial contacts were evaluated for IgM and IgG antibodies against SARS-CoV-2. We found 333 cases of COVID-19 among familial contacts (44.9%). A positive correlation was observed between the time elapsed from the onset of symptoms until the index patient's COVID-19 testing and the number of family contacts infected by SARS-CoV-2. Early SARS-CoV-2 testing and familial contact evaluation are relevant strategies to contain transmission.
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Affiliation(s)
- Daiane Cabrera Menezes
- Instituto Lauro de Souza Lima, Secretaria de Estado da Saúde. Rod. Cmte. João Ribeiro de Barros s/n, Distrito Industrial Marcus Vinícius Feliz Machado. 17034-971 Bauru SP Brasil.
- Programa de Pós-Graduação em Doenças Tropicais, Faculdade de Medicina de Botucatu, Universidade Estadual Paulista "Julio de Mesquita Filho" (Unesp). Botucatu SP Brasil
| | - Jonatas Perico
- Instituto Lauro de Souza Lima, Secretaria de Estado da Saúde. Rod. Cmte. João Ribeiro de Barros s/n, Distrito Industrial Marcus Vinícius Feliz Machado. 17034-971 Bauru SP Brasil.
- Programa de Pós-Graduação em Doenças Tropicais, Faculdade de Medicina de Botucatu, Universidade Estadual Paulista "Julio de Mesquita Filho" (Unesp). Botucatu SP Brasil
| | - Bruna Letícia Martins
- Instituto Lauro de Souza Lima, Secretaria de Estado da Saúde. Rod. Cmte. João Ribeiro de Barros s/n, Distrito Industrial Marcus Vinícius Feliz Machado. 17034-971 Bauru SP Brasil.
- Programa de Pós-Graduação em Doenças Tropicais, Faculdade de Medicina de Botucatu, Universidade Estadual Paulista "Julio de Mesquita Filho" (Unesp). Botucatu SP Brasil
| | - Andrea de Faria Fernandes Belone
- Instituto Lauro de Souza Lima, Secretaria de Estado da Saúde. Rod. Cmte. João Ribeiro de Barros s/n, Distrito Industrial Marcus Vinícius Feliz Machado. 17034-971 Bauru SP Brasil.
| | | | - Fabiana Covolo de Souza Santana
- Instituto Lauro de Souza Lima, Secretaria de Estado da Saúde. Rod. Cmte. João Ribeiro de Barros s/n, Distrito Industrial Marcus Vinícius Feliz Machado. 17034-971 Bauru SP Brasil.
| | - Ana Carla Pereira Latini
- Instituto Lauro de Souza Lima, Secretaria de Estado da Saúde. Rod. Cmte. João Ribeiro de Barros s/n, Distrito Industrial Marcus Vinícius Feliz Machado. 17034-971 Bauru SP Brasil.
- Programa de Pós-Graduação em Doenças Tropicais, Faculdade de Medicina de Botucatu, Universidade Estadual Paulista "Julio de Mesquita Filho" (Unesp). Botucatu SP Brasil
| | - Vania Nieto Brito de Souza
- Instituto Lauro de Souza Lima, Secretaria de Estado da Saúde. Rod. Cmte. João Ribeiro de Barros s/n, Distrito Industrial Marcus Vinícius Feliz Machado. 17034-971 Bauru SP Brasil.
- Programa de Pós-Graduação em Doenças Tropicais, Faculdade de Medicina de Botucatu, Universidade Estadual Paulista "Julio de Mesquita Filho" (Unesp). Botucatu SP Brasil
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4
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Neuman N, Sandvik P, Lindholm NB, Bömer-Schulte K, Lövestam E. Food-related experiences and behavioral responses among people affected by chemosensory dysfunctions following COVID-19: A scoping review. Res Nurs Health 2023. [PMID: 37171788 DOI: 10.1002/nur.22315] [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: 02/04/2023] [Revised: 04/19/2023] [Accepted: 04/30/2023] [Indexed: 05/13/2023]
Abstract
A category of symptoms that became characteristic early in the first wave of the coronavirus disease 2019 (COVID-19) pandemic was chemosensory dysfunctions (alterations of smell and taste). Such symptoms substantially affect food and eating-cornerstones for both nutrition-related health outcomes and for quality of life. Based on this, this scoping review aimed to map out existing scientific literature on food-related experiences and related behavioral responses among people affected by chemosensory dysfunctions following COVID-19. A librarian-supported search of PsycInfo, PubMed, and Scopus for publications written in English (2020 to April 26, 2022) was conducted. Two authors searched for and screened publications and three others extracted and collated data. These are reported following the Preferred Reporting Items of Systematic reviews and Meta-Analyses extension for Scoping Reviews. Of 1169 hits, 9 publications were included in the review. The results are thematized as "Psychological and social aspects" and "Nutritional aspects," each with the subsections "Experiences" and "Behavioral responses." A great variety of food-related problems, nutritional and mental health effects, and implications for social life are identified. People affected by chemosensory dysfunctions following COVID-19 suffer, as evident both in stories from qualitative studies and in measurements of quality of life. The results impact all professions who are and may come to be involved in treating these patients, such as nurses, physicians, dietitians, and psychologists. With more knowledge about the dysfunctions' manifestation, duration, and impact on everyday life, multiprofessional teams need to collaborate in supporting patients medically, psychosocially, and nutritionally.
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Affiliation(s)
- Nicklas Neuman
- Department of Food Studies, Nutrition and Dietetics, Uppsala Biomedical Centre (BMC), Uppsala University, Uppsala, Sweden
| | - Pernilla Sandvik
- Department of Food Studies, Nutrition and Dietetics, Uppsala Biomedical Centre (BMC), Uppsala University, Uppsala, Sweden
| | - Ninni Bellini Lindholm
- Department of Food Studies, Nutrition and Dietetics, Uppsala Biomedical Centre (BMC), Uppsala University, Uppsala, Sweden
| | - Katharina Bömer-Schulte
- Department of Food Studies, Nutrition and Dietetics, Uppsala Biomedical Centre (BMC), Uppsala University, Uppsala, Sweden
| | - Elin Lövestam
- Department of Food Studies, Nutrition and Dietetics, Uppsala Biomedical Centre (BMC), Uppsala University, Uppsala, Sweden
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5
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Zhu Y, Xia Y, Pickering J, Bowen AC, Short KR. The role of children in transmission of SARS-CoV-2 variants of concern within households: an updated systematic review and meta-analysis, as at 30 June 2022. Euro Surveill 2023; 28:2200624. [PMID: 37140450 PMCID: PMC10161681 DOI: 10.2807/1560-7917.es.2023.28.18.2200624] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2022] [Accepted: 03/17/2023] [Indexed: 05/05/2023] Open
Abstract
BackgroundMeta-analyses and single-site studies have established that children are less infectious than adults within a household when positive for ancestral SARS-CoV-2. In addition, children appear less susceptible to infection when exposed to ancestral SARS-CoV-2 within a household. The emergence of SARS-CoV-2 variants of concern (VOC) has been associated with an increased number of paediatric infections worldwide. However, the role of children in the household transmission of VOC, relative to the ancestral virus, remains unclear.AimWe aimed to evaluate children's role in household transmission of SARS-CoV-2 VOC.MethodsWe perform a meta-analysis of the role of children in household transmission of both ancestral SARS-CoV-2 and SARS-CoV-2 VOC.ResultsUnlike with the ancestral virus, children infected with VOC spread SARS-CoV-2 to an equivalent number of household contacts as infected adults and were equally as likely to acquire SARS-CoV-2 VOC from an infected family member. Interestingly, the same was observed when unvaccinated children exposed to VOC were compared with unvaccinated adults exposed to VOC.ConclusionsThese data suggest that the emergence of VOC was associated with a fundamental shift in the epidemiology of SARS-CoV-2. It is unlikely that this is solely the result of age-dependent differences in vaccination during the VOC period and may instead reflect virus evolution over the course of the pandemic.
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Affiliation(s)
- Yanshan Zhu
- School of Chemistry and Molecular Biosciences, The University of Queensland, Brisbane, Australia
- Wesfarmer's Centre for Vaccines and Infectious Diseases, Telethon Kids Institute, University of Western Australia, Nedlands, Perth, Australia
- These authors contributed equally to this manuscript
| | - Yao Xia
- Department of Microbiology, State Key Laboratory of Emerging Infectious Diseases, Carol Yu Centre for Infection, School of Clinical Medicine, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Pokfulam, Hong Kong Special Administrative Region, China
- These authors contributed equally to this manuscript
| | - Janessa Pickering
- Wesfarmer's Centre for Vaccines and Infectious Diseases, Telethon Kids Institute, University of Western Australia, Nedlands, Perth, Australia
| | - Asha C Bowen
- Wesfarmer's Centre for Vaccines and Infectious Diseases, Telethon Kids Institute, University of Western Australia, Nedlands, Perth, Australia
- Department of Infectious Diseases, Perth Children's Hospital, Nedlands, Perth, Australia
| | - Kirsty R Short
- School of Chemistry and Molecular Biosciences, The University of Queensland, Brisbane, Australia
- Australian Infectious Diseases Research Centre, The University of Queensland, Brisbane, Australia
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6
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Wang C, Huang X, Lau EHY, Cowling BJ, Tsang TK. Association Between Population-Level Factors and Household Secondary Attack Rate of SARS-CoV-2: A Systematic Review and Meta-analysis. Open Forum Infect Dis 2022; 10:ofac676. [PMID: 36655186 PMCID: PMC9835764 DOI: 10.1093/ofid/ofac676] [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: 09/02/2022] [Accepted: 12/14/2022] [Indexed: 12/23/2022] Open
Abstract
Background Accurate estimation of household secondary attack rate (SAR) is crucial to understand the transmissibility of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). The impact of population-level factors, such as transmission intensity in the community, on SAR estimates is rarely explored. Methods In this study, we included articles with original data to compute the household SAR. To determine the impact of transmission intensity in the community on household SAR estimates, we explored the association between SAR estimates and the incidence rate of cases by country during the study period. Results We identified 163 studies to extract data on SARs from 326 031 cases and 2 009 859 household contacts. The correlation between the incidence rate of cases during the study period and SAR estimates was 0.37 (95% CI, 0.24-0.49). We found that doubling the incidence rate of cases during the study period was associated with a 1.2% (95% CI, 0.5%-1.8%) higher household SAR. Conclusions Our findings suggest that the incidence rate of cases during the study period is associated with higher SAR. Ignoring this factor may overestimate SARs, especially for regions with high incidences, which further impacts control policies and epidemiological characterization of emerging variants.
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Affiliation(s)
- Can Wang
- WHO Collaborating Centre for Infectious Disease Epidemiology and Control, School of Public Health, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong Special Administrative Region, China
| | - Xiaotong Huang
- WHO Collaborating Centre for Infectious Disease Epidemiology and Control, School of Public Health, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong Special Administrative Region, China
| | - Eric H Y Lau
- WHO Collaborating Centre for Infectious Disease Epidemiology and Control, School of Public Health, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong Special Administrative Region, China,Laboratory of Data Discovery for Health Limited, Hong Kong Science and Technology Park, New Territories, Hong Kong Special Administrative Region, China
| | - Benjamin J Cowling
- WHO Collaborating Centre for Infectious Disease Epidemiology and Control, School of Public Health, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong Special Administrative Region, China,Laboratory of Data Discovery for Health Limited, Hong Kong Science and Technology Park, New Territories, Hong Kong Special Administrative Region, China
| | - Tim K Tsang
- Correspondence: Tim K. Tsang, PhD, School of Public Health, Li Ka Shing Faculty of Medicine, The University of Hong Kong, 7 Sassoon Road, Pokfulam, Hong Kong Special Administrative Region, China ()
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Wurm J, Lehfeld AS, Varnaccia G, Iwanowski H, Finkel B, Schienkiewitz A, Perlitz H, Loer AKM, Wess B, Franke A, Hüther A, Kuttig T, Sandoni A, Kubisch U, Jordan S, Haas W, Buchholz U, Loss J. Symptomatik einer akuten SARS-CoV-2-Infektion bei Kindern im Kita-Alter. Monatsschr Kinderheilkd 2022; 170:1113-1121. [PMCID: PMC9645339 DOI: 10.1007/s00112-022-01640-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/08/2022] [Indexed: 11/11/2022]
Abstract
Hintergrund Die Symptomatik einer pädiatrischen SARS-CoV-2-Infektion ist sehr variabel. Es gibt nur wenige Studien zu nichthospitalisierten Kindern bzw. Kindern im Kita-Alter. Ziel der Arbeit Die Arbeit soll die Häufigkeit verschiedener COVID-19-Symptome bei ein- bis 6‑jährigen Kindern beschreiben. Sie führt dazu Daten aus 2 Modulen der Corona-KiTa-Studie zusammen: 1) das Modul „COALA“ – Corona: Anlassbezogene Untersuchungen in Kitas und 2) das Modul „CATS“ – Corona KiTa Surveillance (Meldedaten). Material und Methoden In COALA wurden die Infektionsgeschehen in 30 Kitas, in denen ein SARS-CoV-2-Fall gemeldet wurde, untersucht (Oktober 2020 bis Juni 2021). Kita-Kinder wurden prospektiv über 12 Tage beobachtet (SARS-CoV-2-Tests, Symptomtagebuch). Die Ergebnisse wurden mit den Symptomangaben der deutschlandweit gemeldeten SARS-CoV-2-Fälle (Meldedaten) verglichen. Ergebnisse Aus den teilnehmenden Kitas liegen für 289 Kinder Angaben vor. Von 39 Kindern mit SARS-CoV‑2 (Wildtyp, α‑Variante) hatten 64 % mindestens ein Symptom, von den nicht mit SARS-CoV‑2 infizierten Kindern 40 %. In beiden Gruppen war Schnupfen das häufigste Symptom (36 % vs. 25 %, n. s.). Aus den Meldedaten liegen für 84.371 Kinder klinische Informationen vor, Fieber war am häufigsten (27 %), neben Schnupfen (26 %). Schwere Beschwerden wie z. B. Atemnot wurden in den Ausbruchsuntersuchungen und in den Meldedaten nur selten angegeben (3 % bzw. 1 %). Schlussfolgerung Kinder im Kita-Alter haben meist milde bzw. asymptomatische Verläufe einer SARS-CoV-2-Infektion. Ihre Symptome ähneln denjenigen von nicht mit SARS-CoV‑2 infizierten Kindern aus denselben Kitas. Es erscheint sinnvoll, Erkenntnisse aus den Meldedaten durch Ausbruchsuntersuchungen zu ergänzen, um methodische Limitationen der einzelnen Vorgehensweisen auszugleichen. Zusatzmaterial online Die Online-Version dieses Beitrags (10.1007/s00112-022-01640-3) enthält eine weitere Tabelle, die Symptome bei symptomatischen SARS-CoV-2-Fällen von Kindern im Alter von einem bis 6 Jahren in der COALA-Stichprobe und in den Meldedaten gegenüberstellt.
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Affiliation(s)
- Juliane Wurm
- Abteilung für Epidemiologie und Gesundheitsmonitoring, Robert Koch-Institut, General-Pape-Straße 62–66, 12101 Berlin, Deutschland
| | - Ann-Sophie Lehfeld
- Abteilung für Infektionsepidemiologie, Robert Koch-Institut, Berlin, Deutschland
| | - Gianni Varnaccia
- Abteilung für Epidemiologie und Gesundheitsmonitoring, Robert Koch-Institut, General-Pape-Straße 62–66, 12101 Berlin, Deutschland
| | - Helena Iwanowski
- Abteilung für Epidemiologie und Gesundheitsmonitoring, Robert Koch-Institut, General-Pape-Straße 62–66, 12101 Berlin, Deutschland
| | - Bianca Finkel
- Abteilung für Epidemiologie und Gesundheitsmonitoring, Robert Koch-Institut, General-Pape-Straße 62–66, 12101 Berlin, Deutschland
| | - Anja Schienkiewitz
- Abteilung für Epidemiologie und Gesundheitsmonitoring, Robert Koch-Institut, General-Pape-Straße 62–66, 12101 Berlin, Deutschland
| | - Hanna Perlitz
- Abteilung für Epidemiologie und Gesundheitsmonitoring, Robert Koch-Institut, General-Pape-Straße 62–66, 12101 Berlin, Deutschland
| | - Anne-Kathrin Mareike Loer
- Abteilung für Epidemiologie und Gesundheitsmonitoring, Robert Koch-Institut, General-Pape-Straße 62–66, 12101 Berlin, Deutschland
| | - Barbara Wess
- Abteilung für Epidemiologie und Gesundheitsmonitoring, Robert Koch-Institut, General-Pape-Straße 62–66, 12101 Berlin, Deutschland
| | - Andrea Franke
- Abteilung für Epidemiologie und Gesundheitsmonitoring, Robert Koch-Institut, General-Pape-Straße 62–66, 12101 Berlin, Deutschland
| | - Antje Hüther
- Abteilung für Epidemiologie und Gesundheitsmonitoring, Robert Koch-Institut, General-Pape-Straße 62–66, 12101 Berlin, Deutschland
| | - Tim Kuttig
- Abteilung für Epidemiologie und Gesundheitsmonitoring, Robert Koch-Institut, General-Pape-Straße 62–66, 12101 Berlin, Deutschland
| | - Anna Sandoni
- Abteilung für Epidemiologie und Gesundheitsmonitoring, Robert Koch-Institut, General-Pape-Straße 62–66, 12101 Berlin, Deutschland
| | - Ulrike Kubisch
- Abteilung für Epidemiologie und Gesundheitsmonitoring, Robert Koch-Institut, General-Pape-Straße 62–66, 12101 Berlin, Deutschland
| | - Susanne Jordan
- Abteilung für Epidemiologie und Gesundheitsmonitoring, Robert Koch-Institut, General-Pape-Straße 62–66, 12101 Berlin, Deutschland
| | - Walter Haas
- Abteilung für Infektionsepidemiologie, Robert Koch-Institut, Berlin, Deutschland
| | - Udo Buchholz
- Abteilung für Infektionsepidemiologie, Robert Koch-Institut, Berlin, Deutschland
| | - Julika Loss
- Abteilung für Epidemiologie und Gesundheitsmonitoring, Robert Koch-Institut, General-Pape-Straße 62–66, 12101 Berlin, Deutschland
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Household transmission of the Delta COVID-19 variant in Queensland, Australia: a case series. Epidemiol Infect 2022; 150:e173. [PMID: 36192365 PMCID: PMC9671917 DOI: 10.1017/s0950268822001546] [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] [Indexed: 12/14/2022] Open
Abstract
Household transmission plays a key role in the spread of COVID-19 through populations. In this paper, we report on the transmission of COVID-19 within households in a metropolitan area in Australia, examine the impact of various factors and highlight priority areas for future public health responses. We collected and reviewed retrospective case report data and follow-up interview responses from households with a positive case of the Delta COVID-19 variant in Queensland in 2021. The overall secondary attack rate (SAR) among household contacts was 29.6% and the mean incubation period for secondary cases was 4.3 days. SAR was higher where the index case was male (57.9% vs. 14.3%) or aged ≤12 years (38.7% vs. 17.4%) but similar for adult contacts that were double vaccinated (35.7%) and unvaccinated (33.3%). Most interview participants emphasised the importance of clear, consistent and compassionate health advice as a key priority for managing outbreaks in the home. The overall rate of household transmission was slightly higher than that reported in previous studies on the wild COVID-19 variant and secondary infections developed more rapidly. While vaccination did not appear to affect the risk of transmission to adult subjects, uptake in the sample was ultimately high.
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Chen F, Tian Y, Zhang L, Shi Y. The role of children in household transmission of COVID-19: a systematic review and meta-analysis. Int J Infect Dis 2022; 122:266-275. [PMID: 35562045 PMCID: PMC9091150 DOI: 10.1016/j.ijid.2022.05.016] [Citation(s) in RCA: 35] [Impact Index Per Article: 17.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2022] [Revised: 05/03/2022] [Accepted: 05/07/2022] [Indexed: 02/08/2023] Open
Abstract
OBJECTIVES To explore household transmissibility of SARS-CoV-2 in children in new-variants dominating periods. METHODS Through retrieval in PubMed and Embase, studies were included in two parts: meta-analysis of the household secondary attack rate (SAR) and case analysis of household pediatric infections. RESULTS A total of 95 articles were included: 48 for meta-analysis and 47 for case analysis. Pediatric COVID-19 only comprised a minority of the household transmission. The total pooled household SAR of child index cases and contacts were 0.20 (95% confidence interval [CI]: 0.15-0.26) and 0.24 (95% CI: 0.18-0.30). Lower household transmissibility was reported in both child index cases and contacts than in adults (relative risk [RR] = 0.64, 95% CI: 0.50-0.81; RR = 0.74, 95% CI: 0.64-0.85). Younger children were as susceptible as the older children (RR = 0.89, 95% CI: 0.72-1.10). Through subgroup analyses of different variants and periods, increased household SAR was observed in children (Wild: 0.20; Alpha: 0.42; Delta: 0.35; Omicron: 0.56), and no significant difference was found in household SAR between children and adults when new variants dominated. CONCLUSION Although children were found not to be dominant in the household transmission, their transmissibility of SARS-CoV-2 appeared to be on the rise as new variants emerged.
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Affiliation(s)
| | | | | | - Yuan Shi
- Corresponding author: Yuan Shi, Children's Hospital of Chongqing Medical University, Chongqing 400014, China, Mob: 00862363635678
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10
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Gorgels KMF, van Alphen LB, van der Veer BMJW, Hackert VH, Hensels AYJ, Heijer CDJD, Dingemans J, Savelkoul PHM, Hoebe CJPA. Increased transmissibility of SARS-CoV-2 alpha variant (B.1.1.7) in children: three large primary school outbreaks revealed by whole genome sequencing in the Netherlands. BMC Infect Dis 2022; 22:713. [PMID: 36038845 PMCID: PMC9421630 DOI: 10.1186/s12879-022-07623-9] [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: 11/23/2021] [Accepted: 06/07/2022] [Indexed: 11/18/2022] Open
Abstract
Background Variant of concern (VOC) SARS-CoV-2 alpha variant (B.1.1.7) was the dominant strain in the Netherlands between March 2021–June 2021. We describe three primary school outbreaks due to the alpha variant using whole genome sequencing with evidence of large-scale transmission among children, teachers and their household contacts. Method All outbreaks described were investigated by the South Limburg Public Health Service, the Netherlands. A case was defined as an individual with a real-time polymerase chain reaction test or antigen test positive for SARS-CoV-2. Whole genome sequencing was performed on random samples from at least one child and one teacher of each affected class. Results Peak attack rates in classes were 53%, 33% and 39%, respectively. Specific genotypes were identified for each school across a majority of affected classes. Attack rates were high among staff members, likely to promote staff-to-children transmission. Cases in some classes were limited to children, indicating child-to-child transmission. At 39%, the secondary attack rate (SAR) in household contacts of infected children was remarkably high, similar to SAR in household contacts of staff members (42%). SAR of household contacts of asymptomatic children was only 9%. Conclusion Our findings suggest increased transmissibility of the alpha variant in children compared to preceding non-VOC variants, consistent with a substantial rise in the incidence of cases observed in primary schools and children aged 5–12 since the alpha variant became dominant in March 2021. Lack of mandatory masking, insufficient ventilation and lack of physical distancing also probably contributed to the school outbreaks. The rise of the delta variant (B.1.617.2) since July 2021 which is estimated to be 55% more transmissible than the alpha variant, provides additional urgency to adequate infection prevention in school settings. Supplementary Information The online version contains supplementary material available at 10.1186/s12879-022-07623-9.
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Affiliation(s)
- Koen M F Gorgels
- Department of Sexual Health, Infectious Diseases and Environmental Health, South Limburg Public Health Service, PO Box 33, 6400 AA, Heerlen, The Netherlands.
| | - Lieke B van Alphen
- Department of Medical Microbiology, Care and Public Health Research Institute (CAPHRI), Faculty of Health, Medicine and Life Sciences, Maastricht University Medical Centre (MUMC+), P.O. Box 5800, 6202 AZ, Maastricht, The Netherlands
| | - Brian M J W van der Veer
- Department of Medical Microbiology, Care and Public Health Research Institute (CAPHRI), Faculty of Health, Medicine and Life Sciences, Maastricht University Medical Centre (MUMC+), P.O. Box 5800, 6202 AZ, Maastricht, The Netherlands
| | - Volker H Hackert
- Department of Sexual Health, Infectious Diseases and Environmental Health, South Limburg Public Health Service, PO Box 33, 6400 AA, Heerlen, The Netherlands.,Department of Medical Microbiology, Care and Public Health Research Institute (CAPHRI), Faculty of Health, Medicine and Life Sciences, Maastricht University Medical Centre (MUMC+), P.O. Box 5800, 6202 AZ, Maastricht, The Netherlands.,Department of Social Medicine, Care and Public Health Research Institute (CAPHRI), Faculty of Health, Medicine and Life Sciences, Maastricht University, P.O. Box 616, 6200 MD, Maastricht, The Netherlands
| | - Audrey Y J Hensels
- Department of Sexual Health, Infectious Diseases and Environmental Health, South Limburg Public Health Service, PO Box 33, 6400 AA, Heerlen, The Netherlands
| | - Casper D J den Heijer
- Department of Sexual Health, Infectious Diseases and Environmental Health, South Limburg Public Health Service, PO Box 33, 6400 AA, Heerlen, The Netherlands.,Department of Social Medicine, Care and Public Health Research Institute (CAPHRI), Faculty of Health, Medicine and Life Sciences, Maastricht University, P.O. Box 616, 6200 MD, Maastricht, The Netherlands
| | - Jozef Dingemans
- Department of Medical Microbiology, Care and Public Health Research Institute (CAPHRI), Faculty of Health, Medicine and Life Sciences, Maastricht University Medical Centre (MUMC+), P.O. Box 5800, 6202 AZ, Maastricht, The Netherlands
| | - Paul H M Savelkoul
- Department of Medical Microbiology, Care and Public Health Research Institute (CAPHRI), Faculty of Health, Medicine and Life Sciences, Maastricht University Medical Centre (MUMC+), P.O. Box 5800, 6202 AZ, Maastricht, The Netherlands
| | - Christian J P A Hoebe
- Department of Sexual Health, Infectious Diseases and Environmental Health, South Limburg Public Health Service, PO Box 33, 6400 AA, Heerlen, The Netherlands.,Department of Medical Microbiology, Care and Public Health Research Institute (CAPHRI), Faculty of Health, Medicine and Life Sciences, Maastricht University Medical Centre (MUMC+), P.O. Box 5800, 6202 AZ, Maastricht, The Netherlands.,Department of Social Medicine, Care and Public Health Research Institute (CAPHRI), Faculty of Health, Medicine and Life Sciences, Maastricht University, P.O. Box 616, 6200 MD, Maastricht, The Netherlands
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Carvalho JMA, Camargo CN, de Souza Luna LK, Rabha AC, Conte DD, Mariano RF, de Oliveira Junior FI, Barbosa GR, Moreira LVL, Chaves APC, Perosa AH, Bellei N. Household transmission of COVID-19 according to index case: children, parents, and healthcare workers. Braz J Microbiol 2022; 53:1345-1348. [PMID: 35484377 PMCID: PMC9049928 DOI: 10.1007/s42770-022-00762-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2021] [Accepted: 04/16/2022] [Indexed: 11/17/2022] Open
Abstract
The first SARS-CoV-2 intrafamilial transmission was investigated in China. We evaluated the dynamics of SARS-CoV-2 transmission in 242 individuals from 60 family clusters, including 30 healthcare workers (HCW) and 30 patients, in São Paulo city. Sixty index cases with COVID-19 were selected, being 30 HCW index cases from Hospital São Paulo (HSP) and its 93 household contacts and 30 index case patients from Hospital Infantil Sabará (HIS) and its 89 household contacts. Asymptomatic and symptomatic individuals participating were tested for COVID-19. The secondary attack rates in the family clusters of HCW and HIS patients were 37.63% and 68.54%, respectively. Considering all households, the transmission from adults to children was 55.4%, while the transmission from children to children was 37.5%. Children were more infected if the index case was an adult, suggesting that children were less competent to transmit. The average time for a household to be COVID-19 positive was 4 and 3 days for HCW and HIS patients. Although HCW have a higher risk of infection and social vulnerability, the secondary attack rate was lower than that observed for HIS patients, possibly because HCW are more aware of transmission risks than the general community.
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Affiliation(s)
- Joseane Mayara Almeida Carvalho
- Laboratory of Clinical Virology, Infectious Diseases Divison, Departament of Medicine, Universidade Federal de São Paulo, Escola Paulista de Medicina, São Paulo, SP, Brazil.
| | - Clarice Neves Camargo
- Laboratory of Clinical Virology, Infectious Diseases Divison, Departament of Medicine, Universidade Federal de São Paulo, Escola Paulista de Medicina, São Paulo, SP, Brazil.,Instituto de Pesquisa PENSI - Hospital Infantil Sabará, São Paulo, SP, Brazil
| | - Luciano Kleber de Souza Luna
- Laboratory of Clinical Virology, Infectious Diseases Divison, Departament of Medicine, Universidade Federal de São Paulo, Escola Paulista de Medicina, São Paulo, SP, Brazil
| | - Anna Clara Rabha
- Instituto de Pesquisa PENSI - Hospital Infantil Sabará, São Paulo, SP, Brazil
| | - Danielle Dias Conte
- Laboratory of Clinical Virology, Infectious Diseases Divison, Departament of Medicine, Universidade Federal de São Paulo, Escola Paulista de Medicina, São Paulo, SP, Brazil
| | | | | | - Gabriela Rodrigues Barbosa
- Laboratory of Clinical Virology, Infectious Diseases Divison, Departament of Medicine, Universidade Federal de São Paulo, Escola Paulista de Medicina, São Paulo, SP, Brazil
| | - Luiz Vinicius Leão Moreira
- Laboratory of Clinical Virology, Infectious Diseases Divison, Departament of Medicine, Universidade Federal de São Paulo, Escola Paulista de Medicina, São Paulo, SP, Brazil
| | - Ana Paula Cunha Chaves
- Laboratory of Clinical Virology, Infectious Diseases Divison, Departament of Medicine, Universidade Federal de São Paulo, Escola Paulista de Medicina, São Paulo, SP, Brazil
| | - Ana Helena Perosa
- Laboratory of Clinical Virology, Infectious Diseases Divison, Departament of Medicine, Universidade Federal de São Paulo, Escola Paulista de Medicina, São Paulo, SP, Brazil
| | - Nancy Bellei
- Laboratory of Clinical Virology, Infectious Diseases Divison, Departament of Medicine, Universidade Federal de São Paulo, Escola Paulista de Medicina, São Paulo, SP, Brazil
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12
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Madewell ZJ, Yang Y, Longini IM, Halloran ME, Dean NE. Household Secondary Attack Rates of SARS-CoV-2 by Variant and Vaccination Status: An Updated Systematic Review and Meta-analysis. JAMA Netw Open 2022; 5:e229317. [PMID: 35482308 PMCID: PMC9051991 DOI: 10.1001/jamanetworkopen.2022.9317] [Citation(s) in RCA: 105] [Impact Index Per Article: 52.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
Abstract
IMPORTANCE An overall household secondary attack rate (SAR) of 18.9% (95% CI, 16.2%-22.0%) through June 17, 2021 was previously reported for SARS-CoV-2. Emerging variants of concern and increased vaccination have affected transmission rates. OBJECTIVE To evaluate how reported household SARs changed over time and whether SARs varied by viral variant and index case and contact vaccination status. DATA SOURCES PubMed and medRxiv from June 18, 2021, through March 8, 2022, and reference lists of eligible articles. Preprints were included. STUDY SELECTION Articles with original data reporting the number of infected and total number of household contacts. Search terms included SARS-CoV-2, COVID-19, variant, vaccination, secondary attack rate, secondary infection rate, household, index case, family contacts, close contacts, and family transmission. DATA EXTRACTION AND SYNTHESIS The Preferred Reporting Items for Systematic Reviews and Meta-Analyses reporting guideline was followed. Meta-analyses used generalized linear mixed models to obtain SAR estimates and 95% CIs. MAIN OUTCOMES AND MEASURES SAR stratified by covariates according to variant, index case and contact vaccination status, and index case identification period. SARs were used to estimate vaccine effectiveness on the basis of the transmission probability for susceptibility to infection (VES,p), infectiousness given infection (VEI,p), and total vaccine effectiveness (VET,p). RESULTS Household SARs were higher for 33 studies with midpoints in 2021 to 2022 (37.3%; 95% CI, 32.7% to 42.1%) compared with 63 studies with midpoints through April 2020 (15.5%; 95% CI, 13.2% to 18.2%). Household SARs were 42.7% (95% CI, 35.4% to 50.4%) for Omicron (7 studies), 36.4% (95% CI, 33.4% to 39.5%) for Alpha (11 studies), 29.7% (95% CI, 23.0% to 37.3%) for Delta (16 studies), and 22.5% (95% CI, 18.6% to 26.8%) for Beta (3 studies). For full vaccination, VES,p was 78.6% (95% CI, 76.0% to 80.9%) for Alpha, 56.4% (95% CI, 54.6% to 58.1%) for Delta, and 18.1% (95% CI, -18.3% to 43.3%) for Omicron; VEI,p was 75.3% (95% CI, 69.9% to 79.8%) for Alpha, 21.9% (95% CI, 11.0% to 31.5%) for Delta, and 18.2% (95% CI, 0.6% to 32.6%) for Omicron; and VET,p was 94.7% (95% CI, 93.3% to 95.8%) for Alpha, 64.4% (95% CI, 58.0% to 69.8%) for Delta, and 35.8% (95% CI, 13.0% to 52.6%) for Omicron. CONCLUSIONS AND RELEVANCE These results suggest that emerging SARS-CoV-2 variants of concern have increased transmissibility. Full vaccination was associated with reductions in susceptibility and infectiousness, but more so for Alpha than Delta and Omicron. The changes in estimated vaccine effectiveness underscore the challenges of developing effective vaccines concomitant with viral evolution.
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Affiliation(s)
| | - Yang Yang
- Department of Biostatistics, University of Florida, Gainesville
| | - Ira M. Longini
- Department of Biostatistics, University of Florida, Gainesville
| | - M. Elizabeth Halloran
- Fred Hutchinson Cancer Research Center, Seattle, Washington
- Department of Biostatistics, University of Washington, Seattle
| | - Natalie E. Dean
- Department of Biostatistics and Bioinformatics, Emory University, Atlanta, Georgia
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13
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Madewell ZJ, Yang Y, Longini IM, Halloran ME, Dean NE. Household secondary attack rates of SARS-CoV-2 by variant and vaccination status: an updated systematic review and meta-analysis. MEDRXIV : THE PREPRINT SERVER FOR HEALTH SCIENCES 2022:2022.01.09.22268984. [PMID: 35043125 PMCID: PMC8764734 DOI: 10.1101/2022.01.09.22268984] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
We previously reported a household secondary attack rate (SAR) for SARS-CoV-2 of 18.9% through June 17, 2021. To examine how emerging variants and increased vaccination have affected transmission rates, we searched PubMed from June 18, 2021, through January 7, 2022. Meta-analyses used generalized linear mixed models to obtain SAR estimates and 95%CI, disaggregated by several covariates. SARs were used to estimate vaccine effectiveness based on the transmission probability for susceptibility ( VE S,p ), infectiousness ( VE I,p ), and total vaccine effectiveness ( VE T,p ). Household SAR for 27 studies with midpoints in 2021 was 35.8% (95%CI, 30.6%-41.3%), compared to 15.7% (95%CI, 13.3%-18.4%) for 62 studies with midpoints through April 2020. Household SARs were 38.0% (95%CI, 36.0%-40.0%), 30.8% (95%CI, 23.5%-39.3%), and 22.5% (95%CI, 18.6%-26.8%) for Alpha, Delta, and Beta, respectively. VE I,p , VE S,p , and VE T,p were 56.6% (95%CI, 28.7%-73.6%), 70.3% (95%CI, 59.3%-78.4%), and 86.8% (95%CI, 76.7%-92.5%) for full vaccination, and 27.5% (95%CI, -6.4%-50.7%), 43.9% (95%CI, 21.8%-59.7%), and 59.9% (95%CI, 34.4%-75.5%) for partial vaccination, respectively. Household contacts exposed to Alpha or Delta are at increased risk of infection compared to the original wild-type strain. Vaccination reduced susceptibility to infection and transmission to others. SUMMARY Household secondary attack rates (SARs) were higher for Alpha and Delta variants than previous estimates. SARs were higher to unvaccinated contacts than to partially or fully vaccinated contacts and were higher from unvaccinated index cases than from fully vaccinated index cases.
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Affiliation(s)
| | - Yang Yang
- Department of Biostatistics, University of Florida, Gainesville, FL
| | - Ira M. Longini
- Department of Biostatistics, University of Florida, Gainesville, FL
| | - M. Elizabeth Halloran
- Fred Hutchinson Cancer Research Center, Seattle, WA
- Department of Biostatistics, University of Washington, Seattle, WA
| | - Natalie E. Dean
- Department of Biostatistics, University of Florida, Gainesville, FL
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