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When the coronavirus roared through the claustrophobic bowels of the USS Theodore Roosevelt, it crippled the aircraft carrier, sickened hundreds of the 4,800 sailors and ultimately ended the tenure of the Navy secretary.

But the ship’s odyssey is far from over and the military’s biggest covid-19 crisis could yield an epidemiological gold mine as researchers worldwide race to answer questions about the virus.At least 777 Roosevelt sailors have been infected, and the rate of asymptomatic infection is about 50 percent, the Navy said Wednesday.
In contrast, the general population rate is about half that — as high as 25 percent, the Centers for Disease Control and Prevention has said."


https://www.washingtonpost.com/national-security/2020/04/23/roosevelt-coronavirus-epidemiology/?arc404=true

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see also this May 31 Guardian article

https://www.theguardian.com/world/2020/may/30/could-nearly-half-of-those-with-covid-19-have-no-idea-they-are-infected

also

assume >50% asymptomatic
 and then remember those that do go on to show symptoms have already past peak transmissibility density

==edit Transmission curve was later updated
attached below