Casirivimab/imdevimab appeared to lower the incidence of symptomatic COVID-19 in an infected, but asymptomatic, group. Editorialists urge caution, however, in interpreting the results.
Protection is low without boosters, the authors of a new study find. The findings also have immediate implications for the more than 40 countries who have used the CoronaVac vaccine.
The Omicron coronavirus variant causes less severe disease than the Delta strain but remains a dangerous virus particularly for the unvaccinated, the head of WHO said on Wednesday.
COVID-19 hospitalizations in the United States have increased by about 33% and deaths are up by about 40% from a week earlier, the head of the US CDC said on Wednesday.
This study demonstrates the potential for SARS-CoV-2 Delta variant outbreaks in congregate settings, even among populations with high vaccination coverage.