As only about 11% of Americans have so far received the bivalent booster shots from Pfizer and Moderna, and only 30% of those over 65 years of age, the Biden administration on Tuesday launched a 6-week, $475 million push to increase those numbers as tens of millions of jabs sit on shelves.
The Biden team noted that there are now more than 70,000 locations offering the updated vaccines, and HHS is expanding to mobile and rural settings with more flexible ordering options for providers.
Pfizer and partner BioNTech said last week that the immune response induced by their bivalent Covid-19 vaccine against the newer sublineages, including BA.4.6, BA.2.75.2, BQ.1.1 and XBB.1, saw a greater increase in neutralizing antibody titers when compared to the original version of Comirnaty. Moderna’s booster also met its primary endpoint, with significantly higher neutralizing antibody titers against BA.4/BA.5 compared to a booster of the original Spikevax…
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