Are Vaccines Still Effective?
One of the pressing concerns that people have about Omicron is with regard to the effectiveness of vaccines. Since the possibility of reinfection is higher in Omicron, it’s possible that vaccines provide less protection for this variant.
According to a study from Duke University, the Moderna vaccine provides limited resistance to Omicron. In a statement, David Montefiori, a virologist who helped with the study, shares3 that “The antibodies that people make after they get the standard two inoculations of the Moderna mRNA vaccine are 50 times less effective against omicron than they are against the original form of the virus.”
The study also reports that those who received a booster shot had increased protection against Omicron. With the booster shot, the effectiveness was about the same as with the Delta variant.
In a separate study from South Africa, it was shown the Pfizer vaccine had a 50% lower effectiveness against Omicron4. This marked a 30% decrease from the 80% protection against other variants. However, the researchers found that despite the drop, the vaccine still protected patients against severe symptoms of COVID-19.
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