NIH, Moderna may test smaller dose of COVID-19 vaccine to increase supplies

The U.S. government is planning to conduct trials to explore options for increasing supplies of Moderna’s COVID-19 vaccine and to address concerns about rare, serious allergic reactions to the Pfizer-BioNTech vaccine, Moncef Slaoui, co-leader of Operation Warp Speed, told reporters Wednesday.

Slaoui pushed back on suggestions that mRNA vaccines from Moderna Inc. (NASDAQ:MRNA) or Pfizer Inc. (NYSE:PFE) and BioNTech SE (NASDAQ:BNTX) should be administered in a single-dose regimen, saying that “a one-dose vaccine is totally inappropriate at this stage.” ...