Categories Articles U.S. States Are Rolling Out COVID-19 Contact Tracing Apps. Months of Evidence From Europe Shows They’re No Silver Bullet Post author By crystalg Post date October 9, 2020 TIME Tags Apps, bullet, contact, COVID19, Europe, Evidence, from, months, Rolling, shows, Silver, states, They're, Tracing, U.S. ← Study: Feel Happier, Concentrate More, Decrease Stress By Cutting Out This → Here’s how playing PS4 games on the PlayStation 5 will work