related_tweet: @ocasmv2 @lana_del_g4y @no_thanks_777 @lisaforkansas @bretweinstein bs. the variants have arisen in response to all we've thrown at it during the first year of the pandemic, including antivirals, anti-inflammatories, meds like remdesivir, mab therapy, convalescent plasma. those have given rise to resistant variants in chronically sick patients.