Ontology highlight
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.
SUBMITTER: Chen F
PROVIDER: S-EPMC9091150 | biostudies-literature | 2022 Sep
REPOSITORIES: biostudies-literature

Chen Feifan F Tian Yan Y Zhang Lixin L Shi Yuan Y
International journal of infectious diseases : IJID : official publication of the International Society for Infectious Diseases 20220511
<h4>Objectives</h4>To explore household transmissibility of SARS-CoV-2 in children in new-variants dominating periods.<h4>Methods</h4>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.<h4>Results</h4>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. Th ...[more]