However, BQ.1.1 is a derivative of BA.5 and we updated our vaccines this fall to include BA.5 in the formula. ![]() Here’s what people need to know: If you’re relying on a prior infection from nine months ago, or if you’re relying on your vaccine from a year ago, you’re not going to have very much protection against BQ.1.1 because of its immune escape. And BQ.1.1 has a very high degree of immune escape. The one that I think we’re tracking most closely is called BQ.1.1. In the U.S., there are a couple of specific subvariants that we are tracking. The virus continues to evolve rapidly - every couple of months we see new variants or subvariants emerge. The virus has changed so much in the last two and a half years - and it’s still changing, with new strains cropping up. Do we expect the new booster will still work against the latest omicron subvariants circulating? Jha’s responses have been edited for length and clarity. He cleared up some common misconceptions about lifesaving COVID-19 treatments and had a few tips for how to safely navigate the holidays. Ashish Jha, M.D., head of the White House COVID-19 task force, talked to AARP about the importance of these new bivalent boosters as we head into the cold-weather months.
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