214: Eighty-seven per cent undetected infected in Wuhan January and February. @henryimiller Dr Henry Miller
Image: Victims of the Manchurian plague, circa 1910. Dr Henry Miller, Pacific Research Institute; in re: Virus. Multiple levels of testing of vaccines; not good to have uncertainty or side effects when a vaccine is offered to millions of people. We still have a long way to go with efficacy or safety. Epidemiology: Covert infections may have contributed to the rapid spread of COVID-19 (https://nlcontent.springernature.com/d-redirect/TIDP569370XAF02A274C2844F3E89E2172FEEF3A4FCYI4/?url=https%3a%2f%2fpress.nature.com%2freconstruction-of-the-full-transmission-dynamics-of-covid-19-in-%2f18176970&linksource=https%3a%2f%2fnemo-web-feed-provider.live.cf.private.springer.com%2f15589138%2fpressReleases%2f%5bdossier-id%5d%3feditorialDomain%3dhttps%3A%2F%2Fpress.nature.com%26publicationDomain%3dhttps%3A%2F%2Fwww.nature.com%2Farticles) Up to 87% of COVID-19 cases in Wuhan, China, between January and March 2020 may have gone undetected, according to a modelling study published in Nature. These findings are consistent with recent serological studies in the United States and Europe. Undetected, or unascertained, infections — which may have included asymptomatic or presymptomatic individuals, or those with mild symptoms — probably had a major role in the rapid spread of the disease, and could lead to a resurgence of infections upon lifting of restrictions too early.