FILE -COVID-19 and flu vaccines files are seen at the L.A. Care and Blue Shield of California Promise Health Plans' Community Resource Center .(AP Photo/Mark J. Terrill, File)
The study found that during the Delta and Omicron epidemic waves, immunity acquired after a vaccination, prior infection, and both vaccination and infection (hybrid immunity) was weaker when residents were residing with an infected inmate.
FILE - A sign that reads "Social Distance Maintain 6 ft" is posted on student lockers at a school in Baldwin, N.Y., on Aug. 28, 2020. Nationwide, students have been absent at record rates since schools reopened after COVID-forced closures. More than a quarter of students missed at least 10% of the 2021-22 school year. (AP Photo/Mark Lennihan, File)