Scientists reveal the average incubation time for the virus that's infected more than 114,000 people globally.
Lead researcher Prof Justin Lessler, from Johns Hopkins Bloomberg School of Public Health, said the findings were the best"rapid" estimate we have to date, based on 181 cases in total.It is unclear how many people develop symptoms overall - the study did not assess that.
Experts believe most people who get the infection will only have mild disease. Some will be asymptomatic, ie carrying the virus but experiencing no symptoms. But the disease can be very serious and even deadly for some - typically elderly people with pre-existing health conditions. Prof Jonathan Ball, an expert in molecular virology at the University of Nottingham, said the study confirmed that for the vast majority of cases, the incubation and therefore quarantine period for new coronavirus, will be up to 14 days.
And, encouragingly:"There is little if any evidence that people can routinely transmit virus during the asymptomatic period."Some spread might be possible before people show symptoms, but this is not thought to be the main way the virus spreads.
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