3) โWe also identified 22 probable primary case-patients for the clusters; most were 20โ39 years of age and presymptomatic or asymptomatic at virus transmission.โ
— Eric Feigl-Ding (@DrEricDing) June 14, 2020
๐And of the hotspots, 20-39 years who had no symptoms were the main primary SOURCE of these hotspot clusters!!!