Pediatric cases of COVID-19 constitute between 1% to 10% of all confirmed cases of COVID-19; variation exists by jurisdiction.
Few case reports exist of confirmed child-to-other transmission. Contact tracing studies suggest that children are unlikely to be transmitters of the disease. Households are the most likely environments for transmission.
A recent large South Korean contact tracing study however (in pre-print) found that household COVID-19 transmission rates for children age 10-19 were significantly higher than in adults; transmission rates for children age 0-9 were relatively low.
AUGUST 7th, 2020 UPDATE: No new studies examining secondary attack rates of pediatric index cases were found. Studies continue to suggest low transmission from pediatric cases, and high proportion of pediatric cases being asymptomatic to mildly symptomatic.
MARCH 9th, 2021 UPDATE: Variants of Concerns are an emerging threat, but literature on pediatric prevalence and transmissibility is sparse. The British variant seems more transmissible (secondary attack rate higher) but follows the same age-related distribution of cases seen earlier in the pandemic.
Sulaiman, F; Coomaran, V; Muhajarine, N; Dalidowicz, M; Miller, L. What are the effects of the new COVID variants on transmission and school reopenings in pediatric populations? 2021 Mar 30; Document no.: PH030801 RR. In: COVID-19 Rapid Evidence Reviews [Internet]. SK: SK COVID Evidence Support Team, c2020. 14p. (CEST rapid review report)
Howell-Spooner, B., Mueller, M. What are the effects of the new COVID variants on transmission and school reopenings in pediatric populations? 2021 Aug 18, Document no.: PH030801v2 ESR. In: COVID-19 Rapid Evidence Reviews [Internet]. SK: SK COVID Evidence Support Team, c2021. 49 p. (CEST evidence search report).
Dalidowicz, M; Ellsworth, C. What COVID-19 community transmission indicators are used in school reopening plans? 2020 Aug 12; Document no.: EOC081201-01 ESR. In: COVID-19 Rapid Evidence Reviews [Internet]. SK: SK COVID Evidence Support Team, c2020. 12 p. (CEST evidence search report)
· Potential impact on reproductive rate (R) of the seven “returning to school” scenarios that were modeled by SAGE exhibited an increase in R due to reopening of school. The scale of increase depended on current value of R within each community and mitigation plans within the community, especially the adherence to social distancing measures. · CDC recommended using additional indicators such as healthcare capacity, new cases, and percent of positive cases to decide school operations along with community spread levels: none-to-minimal, minimal-to-moderate, substantial-controlled, and substantial-uncontrolled. · Combination of strategies such as mask usage, physical distancing, hygiene measures, classroom cohorting, symptomatic screening, testing and tracing of students, staff and teachers along with low levels of community transmission can aid in maintaining low level of R. · Increasing testing and contract tracing can impede an epidemic rebound. · Intersectoral partnerships with local authorities, dedicated personnel (such as coordinators) for testing and tracing along with appropriate communication with parents, teachers and staff should be followed to open schools safely.
Pisolkar, V; McRae, D; Muhajarine, N; Dalidowicz, M; Ellsworth, C. What COVID community transmission indicators are used in school reopening plans? 2020 Aug 26; Document no.: EOC081201 RR. In: COVID-19 Rapid Evidence Reviews [Internet]. SK: SK COVID Evidence Support Team, c2020. 23 p. (CEST rapid review report)