字幕表 動画を再生する 英語字幕をプリント Patients with COVID-19 have experienced mild to severe respiratory illness. Fever Cough Symptoms may appear 2-14 days after exposure. Seek medical advice if you develop symptoms and have been in close contact with a person known to have COVID-19. Or if you live in or have recently been in an area with ongoing spread of COVID-19. For more information on COVID-19, visit cdc dot gov slash covid19.