COVID-19 takes heavy toll on new doctors' mental health, study findsFirst-year medical residents in Shanghai—500 miles away from the Chinese COVID-19 epicenter of Wuhan—had a steep decline in mood, increased depression and anxiety, and twice the level of fear of workplace violence in the first month of the pandemic, according to a research letter published yesterday in JAMA Network Open.The study involved 385 medical residents beginning work at 12 hospitals in August 2019 who tracked their mood each day on a smartphone app and answered questionnaires about their mental health and whether they had experienced, seen, or feared physical violence or verbal abuse at work.