The Food and Drug Administration says it has decided to continue approving COVID-19 vaccine updates for seniors and others at higher risk of severe disease, but will require vaccine makers to conduct ...

We conducted a phase 2–3 double-blind trial to assess the efficacy and safety of nirmatrelvir–ritonavir in asymptomatic, rapid antigen test–negative adults who had been exposed to a household contact ...

Members of Alberta’s governing United Conservative Party will vote on a raft of policy proposals this month, including resolutions requiring temporary residents to pay more for health care, banning on ...

A summer COVID-19 wave has been surging across the United States since June and into fall, with high levels of viral activity still reported in wastewater across most states.Some key metrics to track ...