Chinese researchers have confirmed a case of asymptomatic transmission of the new coronavirus: A 20-year-old woman from Wuhan passed it to five of her family members but never got physically sick herself..
..A report from the Chinese Centre for Disease Control and Prevention analysed records of all of China’s reported cases of the virus from December 8 to February 11 and found that 1.2 percent of patients confirmed to be infected showed no symptoms.
A far higher portion of asymptomatic cases was found on the Diamond Princess cruise ship, where 322 of 621 people tested positive but showed no symptoms.
“It’s very clear that the people who are getting caught in that umbrella of reporting are the people that present themselves to a hospital,” Anthony Fauci, director of the National Institute of Allergy and Infectious Diseases, said at a briefing on February 6.
“There’s another whole cohort that is either asymptomatic or minimally symptomatic.”
..Chinese health officials previously estimated that the incubation period for the virus ranged from one to 14 days, but recent research suggests it could be as long as 24 days.