MedPage Today (5/13, Rudd) reports, “Risk of getting sick from a household contact with COVID-19 dropped by more than half among those who took the antiviral ensitrelvir compared with placebo, a randomized trial showed.” Investigators found, “in a modified intention to treat (ITT) population of household contacts of a COVID patient, 2.9% of those who took at least one dose of oral ensitrelvir as postexposure prophylaxis (PEP) developed COVID within 10 days, as compared with 9% of those assigned to placebo (P<0.001).” MedPage Today adds, “Even in the study’s full ITT population, 4.4% of those randomized to ensitrelvir developed COVID by that point compared with 10.2% of the placebo group (P<0.001).” The findings were published in the New England Journal of Medicine.