Thread by @AbraarKaran

1/ New CDC report on #covid19 outbreak caused by Delta variant in Oklahoma gym, causing 47 cases.

Notably- over 90% of cases were among *unvaccinated or partially vaccinated* people.

Very high household secondary attack rate (53%)

cdc.gov/mmwr/volumes/7…

2/ Risk factors here:
-larger groups
-inconsistent mask use
-poor ventilation
-low vaccination rates

#covid19

Cc @RanuDhillon @DFisman @PeterHotez @BogochIsaac @DrTomFrieden @MonicaGandhi9 @SalomonJA @ashishkjha

3/ As others are bringing up in the comments-- it is important to understand, among the vaccinated 'cases'-- how their cycle threshold values (proxy for viral loads) compared to unvaccinated-- this tells us about their transmission potential in real world. #covid19

4/ Without this, treating vaccinated 'cases' as equivalent to unvaccinated 'cases' doesn't tell the full story

Also- important to follow out 'cases' in both groups to better understand development of long term symptoms (beyond just deaths & hospitalizations) #covid19

5/ Noticing that people are seeming to focus on the idea that reporting 'cases' is misleading because unvaccinated folks here didn't die so what's the big deal?

At least two reasons:
-secondary/tertiary etc cases (not fully traced out here)
-long term morbidity, limited data

6/
-Unvaccinated cases--> suspect higher viral loads/ possibly longer periods where they can transmit to others, causing more cases among vulnerable people. This matters

-Long term morbidity from #Covid19 is a problem. We see it in the follow up clinic.