Addressing the committee, Martha Dawson, the president of the Nationwide Black Nurses Affiliation, mentioned that some sufferers will really feel extra comfy utilizing protein-based vaccines, a know-how that has been in use for many years. “I encourage the F.D.A. to present us one other, extra conventional medical intervention on this combat,” she mentioned.
In scientific trials, the Novavax vaccine was discovered to have an efficacy of 90.4 % at stopping gentle, average or extreme an infection with older variants of the virus. Not one of the volunteers who bought the vaccine skilled average or extreme an infection, translating to an efficacy of 100%.
The trial happened earlier than the rise of the Delta and Omicron variants, which have evaded among the immunity from different vaccines.
In briefing paperwork launched on Friday, F.D.A. scientists recognized six instances of myocarditis and pericarditis, types of coronary heart irritation, in about 40,000 trial volunteers. The F.D.A. paperwork mentioned that the instances raised concern that the vaccine was the trigger and that the charges of the issues might change into larger than with mRNA vaccines.
Moderna and Pfizer-BioNTech didn’t discover any instances of myocarditis or pericarditis of their preliminary scientific trials. However after authorization, as soon as the vaccines got to hundreds of thousands of individuals, they have been each discovered to create a small further threat of myocarditis in boys and younger males.
Of their presentation on Tuesday, Novavax officers defended their vaccine in opposition to these considerations. Their evaluation discovered that myocarditis and pericarditis instances have been balanced throughout the group of volunteers that obtained the vaccine and the group that obtained a placebo. In the true world, there have been experiences of 1 case of probably myocarditis and eight instances of probably pericarditis out of 744,000 doses given in wealthy nations which have licensed the vaccine, the corporate mentioned.
“We consider that the totality of the scientific proof right here just isn’t sufficient to ascertain an total causal relationship with the vaccine,” mentioned Dr. Denny Kim, Novavax’s chief security officer.