A study suggests one vaccine dose might be enough for some coronavirus survivors. The C.D.C. says it’s scaling up the search for variants. South Africa receives its first batch of vaccine doses. …
one of the two federally authorized Covid-19 vaccines, to increase the number of doses in its vials — which could accelerate the nation’s vaccination rate.
Moderna is hoping to raise the number of doses in its vials to as many as 15 from the current 10 doses. The proposal reflects the fact that the company has been ramping up production of its vaccine to the point where the final manufacturing stage, when it is bottled, capped and labeled, has emerged as a roadblock to expanding its distribution.
If the change does go through, it could be hugely welcome news in the campaign to curb a pandemic that has killed more than 440,000 people in the United States alone. In a statement late Monday, Ray Jordan, a
