Booster Shots Appear To Offer Protection Against Omicron COVID-19 Variant
Preliminary laboratory research by Pfizer/BioNTech finds that a third booster shot of its COVID-19 vaccine successfully neutralizes—that is, blocks—the omicron variant of the virus from entering and infecting cells. The researchers tested the new variant against antibodies produced by people one month after they had been inoculated with a third booster dose of the Pfizer/BioNTech vaccine. They report that the boosted level of antibodies “provides a similar level of neutralizing antibodies to Omicron as is observed after two doses against wild-type and other variants that emerged before Omicron. These antibody levels are associated with high efficacy against both the wild-type virus and these variants.”
In the press release reporting their initial laboratory results, the company also notes that the antibodies produced after two doses are 25 times less likely to neutralize the omicron variant than they are for earlier versions of the coronavirus. Nevertheless, the researchers believe that two doses of the vaccine may sufficiently prime T-cells, the next level of immune response, that people may still be protected against severe forms of the disease.
This news follows on less happy preliminary research from South Africa reported earlier this week that tested the omicron variant against antibodies produced by one group of participants who had received
Article from Reason.com