https://www.thelancet.com/journals/laninf/article/PIIS1473-3099(20)30174-2/fulltext Virus not detectable in throat swabs but positive in sputum. Christ, this is gonna be so hard to get an idea of early infection.
Source is supposedly from the INHI. Over 99% of covid-19 deaths are attributed to at least 1 additional comorbidity.
Knowing how long it takes to get research into this shape, it makes me wonder how the CDC, WHO etc guidelines are even out. Perhaps all anecdotal or observational evidence from the early cases admitted?