Zur "asymptomatischen Verbreitung":
"University of Florida researchers find no asymptomatic or presymptomatic spread"
https://rationalground.com/university-of-florida-researchers-find-no-asymptomatic-or-presymptomatic-spread/
"Post-lockdown SARS-CoV-2 nucleic acid screening in nearly ten million residents of Wuhan, China"
https://www.nature.com/articles/s41467-020-19802-w
Keine Hinweise darauf.