How long does it take for symptoms to show up in a person infected with coronavirus?

Knowing the length of time it can take for symptoms to show up, called the incubation period, is an essential part of controlling the spread of the virus. The incubation period determines how long a person who has been exposed to the virus needs to be in quarantine. While some viruses — including the flu — have incubation periods as short as three days, the Centers for Disease Control has determined that the coronavirus can be undetected for as long as two weeks.

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