The governor’s announcement comes as health officials estimate that BA.2 — the most transmissible version of the coronavirus yet identified — accounts for more than half of new virus cases in the United States, the Centers for Disease Control and Prevention said this week. The Omicron subvariant accounts for about 70 percent of cases in the region that includes New York, New Jersey and Puerto Rico.
Although BA.2 is more transmissible than BA.1, it has not shown to cause more severe illness.
Health experts worry that BA.2, which has fueled case surges in Europe and Asia, could lead to another wave of the pandemic in New York, and possibly the country. They believe that the true number of cases in New York might be higher than the data suggests, because many people are testing at home, with no official reporting of results.
That has health officials urging New Yorkers to remain vigilant.
“As we have seen with the recent increase of the Omicron subvariant BA.2, Covid is still with us,” Dr. Mary T. Bassett, the state health commissioner, said in the statement on Saturday. “These safe and effective vaccines remain free, including the second booster.”