The timing of symptom onset depends on lots of factors, including the amount of virus to which someone was exposed, Hotez says. Their level of pre-existing immunity may also affect the likelihood or ...
Medically reviewed by Kate Colby, MPH The COVID-19 incubation period is the time between exposure to the SARS-CoV-2 virus and the onset of symptoms.Over 98% of people in the U.S. have some COVID-19 ...