A top World Health Organization official said data from some countries suggests the delta variant causes an increased risk of hospitalization in those infected.
"We intend to hold them to that commitment," national security advisor Jake Sullivan said of the Taliban amid questions about the Afghanistan withdrawal.
The founder and administrator of an obscure website about underground infrastructure in Washington, D.C., saw a sudden and suspicious spike in traffic in the days before the U.S. Capitol insurrection.
Israel data shows a reduction in the effectiveness of Pfizer's Covid vaccine against severe illness among people 65 and older who were fully vaccinated.
NATO Secretary-General Jens Stoltenberg placed the blame squarely on the Afghan national government Tuesday for the stunning and swift Taliban takeover.
Pfizer and BioNTech said they have submitted early stage clinical trial data to the FDA as part of their application seeking U.S. OK of a Covid booster shot.
Rep. Mike Waltz (R-Fla.) and Retired Lieutenant General Douglas Lute react to the Taliban's rapid takeover of the country and to President Joe Biden's speech.
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