FDA may further restrict rheumatoid arthritis drug Xeljanz due to safety concerns … Depression, altered use of public transport may signal Parkinson’s a decade early … J&J seeks U.S. approval of its one-dose COVID-19 vaccine, with early supplies likely limited … Biogen halts trial of drug hoped to slow Parkinson’s progression … FDA plans rapid reviews for COVID-19 booster shots against new variants … Nurse burnout a ‘significant problem’ in U.S., study confirms