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Coronavirus sufferers symptom-free for five days on average – study
Findings suggest the 14-day quarantine period used around world strikes a good balance
People infected with coronavirus are symptom-free for an average of five days, according to a study that reinforces the need for strict quarantine measures.
The analysis found that 5.1 days was the median length of time before people started showing signs of illness, although there was a wide range of incubation periods, with a tiny minority of people taking up to two weeks.
And
The findings did not reveal the extent to which people can transmit the illness during this symptom-free period, but preliminary evidence suggests there is at least a short window before people start feeling ill when they can pass on the virus to others.
Lessler and colleagues found that about 98% of people who develop symptoms of Covid-19 will do so within 11.5 days of exposure. For every 10,000 individuals quarantined for 14 days, only about 101 would develop symptoms after being released from quarantine, the analysis estimated.