The BA.2 Omicron subvariant is now dominant in northeastern US states, per CDC data. Some experts warn of an impending new wave.

• A map shows how BA.2 has outcompeted other types of Omicron in the northeastern US.
• The subvariant has driven a new surge of cases in Europe.

The Omicron BA.2 subvariant has become dominant over other COVID-19 coronavirus variants in the northeastern US, according to the latest CDC data.

The news comes as a surge of new cases have hit Europe, driven by the more-contagious BA.2 and by countries lifting COVID-19 restrictions. $4.

Experts previously told Insider that $4, in part because of previous exposure to its cousin, the subvariant BA.1. More vulnerable groups could still be at risk, the experts said.

As of last week, BA.2 made up 55.4% of samples collected in Health and Human Services Region 1, $4. This region covers Connecticut, Maine, Massachusetts, New Hampshire, Rhode Island, and Vermont, as well as ten federally recognized tribal nations.

BA.2 also made up 51.8% of samples in HHS Region 2, which covers New Jersey, New York, Puerto Rico, and the US Virgin Islands.

The rest of the coronavirus samples were made up of other subtypes of Omicron.

According to estimates from the CDC, the subvariant already makes up about $4

BA.2 is $4. However, it is not thought to be more dangerous than other Omicron variants.

It is not yet clear whether BA.2 will cause a huge surge of cases in the US, $4.