Thread by @MonicaGandhi9

CAN YOU TRANSMIT IF ASYMPTOMATIC AND VACCINATED? (delta) Will put into context later, contact tracing studies; briefly, difficult to transmit if asymptomatic/vax'd. Health workers swabbed- if no symptoms, test turned negative fast: don't isolate 10-14 days
acpjournals.org/doi/10.7326/M2…

Annals of Internal Medicine study may make CDC rethink quarantine after exposures when vax'd and isolation after testing positive if no symptoms and vax'd (or masking everyone vax'd/asymptomatic) - see below for microbiology: immunity works to kill virus

https://twitter.com/MonicaGandhi9/status/1434567533948854289

Please remember CDC does not actually recommend testing asymptomatic individuals who are vaccinated without an exposure but this is being done in many settings. This is important data from the Annals of Internal Medicine (a very high impact journal)

Finally, of course vaccinated not equally as likely to spread as unvaccinated as vaccinated less likely to get infected to begin with (6x less by recent CDC data) - right @Craig_A_Spencer?
theatlantic.com/ideas/archive/…

From Annals paper at top: "All 33 asymptomatic case patients tested negative day after initial positive result, all negative results confirmed on a 3rd swab 2 days afterward. In contrast, symptomatic cases cleared after mean of 11 days". We haven't changed I/Q lengths

Also, many places in US not even doing modified quarantines or test to stay protocols; think this should be helpful information for those states (or @CDCgov to endorse these strategies). @JVergales
washingtonpost.com/outlook/2021/1…