Seroprevalence of infection-induced SARS-CoV2 antibodies
▻https://www.cdc.gov/mmwr/volumes/71/wr/mm7117e3.htm
As of February 2022, approximately 75% of children and adolescents had serologic evidence of previous infection with SARS-CoV-2, with approximately one third becoming newly seropositive since December 2021. The greatest increases in seroprevalence during September 2021–February 2022, occurred in the age groups with the lowest vaccination coverage; the proportion of the U.S. population fully vaccinated by April 2022 increased with age (5–11, 28%; 12–17, 59%; 18–49, 69%; 50–64, 80%; and ≥65 years, 90%). Lower seroprevalence among adults aged ≥65 years, who are at greater risk for severe illness from #COVID-19, might also be related to the increased use of additional precautions with increasing age.