The new approach would simplify vaccination guidance so that, every fall, people would get a new shot, updated to try to match whatever variant is dominant.
While endorsing continued boosters for those at high risk, such as the elderly, some question whether the current bivalent vaccines updated to target omicron have enhanced protection compared to the original vaccines. Most people are still well-protected against severe disease by the immunity they already have, they say., an immunologist at Weill Cornell Medical College.
"Particularly now when Congress is not allocating new funds for COVID response, we have to be especially judicious in how we spend our money and what would be most cost-effective," says Dr., a senior fellow at the Kaiser Family Foundation."It's unclear whether updating the booster formulations and repeatedly boosting people is the most effective approach to controlling COVID at this stage.
Others say updating the vaccines make sense to make sure people are as well-protected as possible while researchers continue to try to develop new vaccines. "We're going to be reaching that pretty soon with the early adopters of the bivalent boosters, like myself," says Dr., co-director of the Center for Vaccine Development at Texas Children's Hospital and dean of the National School of Tropical Medicine at Baylor College of Medicine."I don't know if an annual strategy is going to cut it."
The thinking is that at this point in the pandemic the overwhelming majority of people have a significant levels of immunity, either from having gotten vaccinated and boosted, or infected one of more times, or both. And while that immunity appears to protect most people from severe disease, that protection does appear to fade with time.
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