Image of nurse at desk, typing on laptop

Aduhelm tied to brain swelling in nearly 40% of patients, but few have symptoms, drugmaker says … Operators push back as nursing homes fined nearly $1 million over state vaccination rules …  BP drug losartan fails to alter Alzheimer’s brain atrophy in year-long trial … COVID-19 antivirals could be pandemic game-changers — if Americans can access them … Plasma injections for knee pain work no better than placebo, new study finds