MSNBC host Rachel Maddow has yet to delete a tweet promoting a c0ntested story about rural Oklahoma hospitals being overwhelmed with patients taking the veterinary medicine ivermectin to treat Covid-19 – an unproven treatment. “Patients overdosing on ivermectin backing up rural Oklahoma hospitals, ambulances,” tweeted Maddow on Sept. 2, quoting the headline of the piece that week by NBC’s Oklahoma City affiliate KFOR.

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