New positive phase III study results for Regeneron Pharmaceuticals Inc.’s COVID-19 monoclonal antibody cocktail show a single dose reduced the risk of contracting the virus by 81.6% during a two- to eight-month follow-up period. The strong data go along with Pfizer Inc.’s recent positive results for its oral antiviral, Paxlovid, hinting that COVID-19 therapeutics could begin cutting into powerful mRNA vaccine margins from Pfizer Inc.-Biontech SE and Moderna Inc.
An ongoing evaluation of heart muscle inflammation risk, a key concern with mRNA COVID-19 vaccines globally, could delay through January 2022 completion of an FDA review of Moderna Inc.'s vaccine in adolescents 12 to 17 years of age. The side effect, called myocarditis, has been a particular concern with regulators, especially for adolescents and young men.
Interim data from a phase II/III study of Moderna Inc.’s COVID-19 vaccine show a robust antibody response in children ages 6 through 11, stronger than the one the company found in adolescents. Two 50-mcg doses given 28 days apart also produced a favorable safety profile that nearly mirrored that of adolescents and adults.
Five days after an FDA advisory committee recommended a booster dose of Pfizer Inc.-Biontech SE’s COVID-19 vaccine, Comirnaty, for people 65 and older or those who are at high risk of a serious infection, the CDC’s Advisory Committee on Immunization Practices (ACIP) struggled Sept. 22 with what a U.S. booster program would look like if only one booster is available when three different COVID-19 vaccines are being used in the country.
As members of the White House COVID-19 Response Team talk about COVID-19 boosters as if they are a fait accompli for Americans even before the FDA completes its evaluation of the data, the controversy continues to roil around the need for another vaccine dose.
As many lower and middle-income countries continue to scramble for COVID-19 vaccine doses, which are largely being manufactured in Europe and the U.S., their own regulatory rules may be getting in the way in some instances.
