New Covid Variant BA.3.2 Detected Across the US, Experts Urge Caution

BA.3.2, an Omicron variant of Covid-19, has been detected in 29 US states and Puerto Rico, according to the Centers for Disease Control and Prevention. While the variant carries dozens of new spike mutations, experts say there is not yet evidence it is more severe than other recent variants.

"The right response to BA.3.2 is serious attention, not alarm," says Dr. Jake Scott, a Stanford professor and infectious disease expert who authored a systematic review of Covid vaccines for the New England Journal of Medicine.

The CDC reports that BA.3.2 has been identified in a growing number of states across the country. While the variant's spike mutations are concerning, Scott emphasizes that more data is needed to determine if BA.3.2 is more transmissible or leads to more severe illness compared to other Omicron subvariants.

"We're still in the early stages of understanding this new variant," Scott explains. "Right now, the most important thing is for people to stay vigilant, get vaccinated and boosted, and continue following public health guidance."

The emergence of BA.3.2 comes as many parts of the US have seen a decline in Covid-19 cases and hospitalizations in recent months. However, experts caution that new variants can quickly lead to renewed surges if they exhibit increased transmissibility or immune evasion.

"We've seen how quickly Omicron and its subvariants have spread and caused disruption," Scott says. "BA.3.2 is a reminder that we have to remain proactive and prepared for the possibility of another wave."

While the long-term impact of BA.3.2 remains uncertain, Scott urges the public to stay informed and follow the guidance of public health authorities. "By working together and staying vigilant, we can help minimize the effects of this and any future variants," he says.