The guidance is meant to protect both healthcare workers and patients.
Among youth with type 2 diabetes, a spike in incidence occurred in Q3 and Q4 of 2020, especially among Black and Hispanic patients.
Paxlovid may have slight advantage against death, according to one study.
However, two early indicators--emergency department visits and test positivity--declined compared to a week ago.
Groups announced new clinical trials and more support for universal flu, MERS, and mpox vaccines.
The risk of a positive COVID-19 test at an emergency department or urgent care visit was 0.56 after two doses and 0.88 after three doses.
Discussions are under way into possible use of a vaccine to help the poultry industry recover.
Sixteen cytokines and chemokines were significantly decreased after vaccination.
Twenty-one percent had PCC-related respiratory problems, and 60% said they experienced fatigue.
Four to 6 months after a fourth dose, immunoglobulin G levels had regressed to three-dose levels.