Epidemic tracing in WA— bad news—it seems yesterday’s new WA case #2 is directly descended from WA’s case #1 from January, via genetic analysis. Thus the world renowned geneticist below concludes that there’s likely “cryptic” stealth transmission in WA for over a month! #COVID19
2) Rewind -here was WA case1’s coronavirus test history (report from @NEJM), which showed Case1 had positive tests via nasal swabs, but had contradictory oral swab/other results. Notice Case 1’s oral test was negative on day 12 despite positive nasal. Shows maybe unstable test. 
3) (repost) we need to know what extent Case1 may have infected others besides Case2 in WA, given that Case2’s infected descended from Case1 genetically, but neither knew w/ each other. Researchers currently say “Our best current expectation is a few hundred current infections”🤔
4) Trevor doesn’t mince words: WA already facing an outbreak. I wholeheartly agree and said so earlier tonight on CNN (video link coming later).
