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@joelle_emerson ("Joelle Emerson") retweeted:
@Bob_Wachter ("Bob Wachter") replied to a tweet by @Bob_Wachter:
My interpretation: the risk of getting Covid is related to your vax status, whether you're taking steps to lower risk (masking, etc), & whether you’re exposed to the virus. Even in highly vaccinated SF, the odds of being exposed have gone up ~ 20-fold since June 1. (12/20)