No vaccine is 100% effective. Though so-called "breakthrough" COVID cases are rare, the virus is circulating widely. What's a vaccinated person to do? And ... not do?
Hospitalizations are down 62% for childhood respiratory illnesses, a study shows. Masking and physical distancing are keeping a variety of viruses in check, but will these behaviors last?
The newly detected strain — dubbed B.1.1.7 — appears to be more contagious. What precautions might be effective in trying to keep from getting infected?