Pfizer (NYSE:PFE) announced that its COVID-19 antiviral Paxlovid failed to reach statistical significance in reducing risk after patients were exposed to the SARS-CoV-2 virus. The primary endpoint of the Phase 2/3 EPIC-PEP (Evaluation of Protease Inhibition for COVID-19 in Post-Exposure Prophylaxis) study was to reduce the risk of confirmed and symptomatic COVID-19 in adults after…