J&J plans to ask feds to authorize its coronavirus booster shot … FDA chief discusses Pfizer vaccine booster doses in YouTube video … Very low amounts of airborne COVID-19 viral RNA found in long-term care facilities, other institutions … Hearing loss and inactivity are linked for older adults, three studies find … Docs pinpoint ideal target BP rate for preventing a second stroke in diabetes … Long-term care facilities in British Columbia see steep rise in COVID outbreaks
