Even as vaccine manufacturers race to update the first-generation shots in the hopes of patching up our protection for the fall, other scientists are taking a different approach, making vaccines delivered via nasal sprays or tablets that would deploy more immune defenders to the body's front lines: the lining of the mouth, nose and throat.
(CNN) -- US health officials have been in active discussions with the FDA on whether the agency will authorize a second booster vaccine for Americans under 50 years old, the nation's top infectious disease expert said.
LOS ANGELES - Los Angeles County has officially landed back into the "high" COVID-19 transmission category, which would prompt the return of a universal indoor mask mandate as early as July 29 if the county remains in this category for two straight weeks, the county's Department of Public Health announced Thursday.