A study published yesterday in The Lancet Child & Adolescent Health finds that few children aged 5 months to 4 years attending 22 daycare centers in France from March to May 2020 had SARS-CoV-2 antibodies in their blood, suggesting a 3.7% rate of COVID-19 infection.The retrospective study, the first to have focused on seroprevalence in daycare centers, was led by researchers from Jean Verdier Hospital in Bondy, France.
Fourteen of 327 children (4.3%) and 14 of 197 staff members (7.7%) tested at daycare centers that remained open during France's first lockdown had SARS-CoV-2 antibodies in their blood, versus 9 of 164 adult comparators (5.5%) from Jun 4 to Jul 3.