Omicron variant: Where we are on a variant-specific Covid vaccine booster
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Summary
"The sharp declines in the effectiveness of Pfizer-BioNTech versus omicron after just a few months creates new challenges." Dr. Paul Offit, a vaccine expert at the Children’s Hospital of Philadelphia, said the U.S. shouldn't distribute a modified vaccine until a variant emerges that can evade protection against severe illness.The current shot "has continued to be very successful at protecting against severe disease," he said.The Food and Drug Administration didn’t have an immediate comment.Should Americans require additional boosters, the Biden administration would likely need to make arrangements with the drugmakers to ensure supply and on distribution, experts say.
As said here by Berkeley Lovelace Jr.