The virus spreads primarily through saliva droplets or discharge from the nose when a person who has contracted it sneezes or coughs.
The incubation period is the time between the exposure to a virus or bacteria and the appearance of symptoms.
The Centers for Disease Control and Prevention (CDC) state that symptoms typically appear 2–14 days after exposure.
The findings of 2020 research on 181 confirmed cases of SARS-CoV-2 infection suggest that 97.5% of those who are symptomatic will begin to show symptoms within 11.5 days. The researchers also estimate that the mean incubation period for SARS-CoV-2 was 5.1 days.
Although the majority of people develop symptoms within 14 days of getting the virus, in some people, it can take longer. The study authors note that other research has shown that in 101 of every 10,000 individuals who get COVID-19, the incubation period is longer than 14 days.