Scientists have found clear differences in the blood of people with long Covid — a key first step in the development of a test to diagnose the illness.
Two new studies describe the benefits of the antiviral drugs nirmatrelvir-ritonavir (Paxlovid) and molnupiravir in reducing SARS-CoV-2 Omicron hospitalizations and death, with one finding that the former is more effective than the latter at lowering death rates.