Health Pfizer COVID-19 antiviral use jumps over 300%: U.S. health department (NYSE:PFE) By News - May 17, 2022 0 13 FacebookTwitterPinterestWhatsApp Use of Paxlovid, the oral antiviral developed by Pfizer (PFE), has increased 315% over the past four weeks, the U.S. Department of Health and Human Services announced on Tuesday Source