FDA Chief Medical Officer Hilary Marston explains the importance of getting a booster shot, considers why so few people have gotten them and answers other questions
According to an announcement from Pfizer-BioNTech on Friday, the revised booster dose produces a greater immune response against the omicron subvariants BA.4 and BA.5 than the original Covid vaccination.
The outcomes are based on blood samples given from adults one month following single doses of the revised booster shot or initial vaccine versions.
The original coronavirus strain was the focus of Pfizer’s vaccine formulation, which was introduced to older adults in December 2020. The new booster shot is made to simultaneously attack the original viral strain, BA.4, and BA.5.
RELATED: How Effective Is the Updated Booster Against Omicron? (& 5 More Questions, Answered)
As we’ve learned over the last year, COVID-19 variants are to be expected.
According to Pfizer, persons 55 years of age and older who received the updated vaccine had neutralizing antibodies against BA.4 and BA.5 that were around four times greater than those of the same age who received the original vaccine.
The findings, which Pfizer disclosed in a news release, have not been submitted to or evaluated by outside scientists for publication in a medical journal.
RELATED: The Omicron Booster: Your Questions Answered
When the mRNA COVID-19 vaccines were first unveiled in December 2020, medical experts touted the benefits of this new technology, saying formulations could easily be tweaked someday to match a quickly changing virus. That day has finally come.
The modified doses do not appear to provide any greater protection against the new omicron subvariants than the original vaccines do, according to two independent studies published online late last month.
by: Miss Cherry May Timbol – Independent Reporter
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