The aircraft carrier Theodore Roosevelt has given us a unique opportunity to evaluate how many asymptomatic carriers one would find since the infection is running rampant on board, the ship's isolated completely, and almost 95% of the crew has been tested.
~60% of the crew is infected yet show no symptoms. So it's not an estimate.....it's fact and based on a rather unique situation where we have a completely isolated population that's got the infection running through it.
Sweeping testing of the entire crew of the coronavirus-stricken U.S. aircraft carrier Theodore Roosevelt may have revealed a clue about the pandemic: The majority of the positive cases so far are among sailors who are asymptomatic, officials say.
www.reuters.com
Again, you need to spend some time reading instead of pontificating about shit you know little to nothing about.