Determine age-specific infection fatality rates for COVID-19 to inform public health policies
and communications that help protect vulnerable age groups. Studies of COVID-19 …

Background There is uncertainty with respect to SARS-CoV-2 transmission in children (0-19
years) with controversy on effectiveness of school-closures in controlling the pandemic. It is …

Importance The degree to which children and adolescents are infected by and transmit
severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) is unclear. The role of …

Children less than 18 years of age account for an estimated 2%–5% of reported severe
acute respiratory syndrome coronavirus 2 (SARS‐CoV‐2) cases globally. Lower prevalence …

Background Studies based on molecular testing of oral/nasal swabs underestimate SARS-
CoV-2 infection due to issues with test sensitivity, test timing and selection bias. The …

Epidemics generally spread through a succession of waves that reflect factors on multiple
timescales. On short timescales, superspreading events lead to burstiness and …

Important questions remain unanswered regarding why children have mild disease
compared with adults; how children of different ages contribute to asymptomatic community …

Population‐based prevalence surveys of Covid‐19 contribute to establish the burden of
infection, the role of asymptomatic and mild infections in transmission, and allow more …

Abstract COVID-19 (Corona Virus Disease 2019) is a severe respiratory syndrome currently
causing a human global pandemic. The original virus, along with newer variants, is highly …

Background We aimed to estimate the seroprevalence of SARS-CoV-2 infection in France
and to identify the populations most exposed during the first epidemic wave. Methods …