An anti-viral medicine developed jointly by Merck & Co Inc and Ridgeback Biotherapeutics LP, has reduced the risk of hospitalisation or death in patients with Covid-19 by 50% compared with placebo, the two companies announced on 1 October. A Phase 3 trial of the drug, molnupiravir was stopped early and the developers plan to seek an emergency use authorisation from the US Food and Drug Administration in order to get the medicine onto the market quickly. Molnupiravir is a small molecule ribonucleoside analogue that inhibits the replication of the SARS-CoV-2 virus.
