On February 21, 2020 Chinese scientists publish letter to JAMA Network “presuming” that they have evidence that the SARS-CoV-2 virus is spread from asymptomatic carriers after a “20-year-old woman from Wuhan passed it to five of her family members but never got physically sick herself”. [1]
Reports of nursing home residents (the highest risk group) test positive for the virus, presumed infectious, but don’t show any symptoms.