Fears of COVID-19 resurgence in the US grow as officials warn of potential upticks

Over the last week, virus-related hospitalizations in the U.S. have plateaued.

Amid a growing COVID-19 surge occurring overseas, there are renewed concerns among health officials in the United States that the spread of the highly transmissible omicron subvariant BA.2, combined with waning vaccine immunity and the decision to end masking recommendations, could cause the country to face yet another viral resurgence.

"What we're seeing in Europe, and particularly in the U.K., is something we really need to pay attention to because they are starting to see a reversal and a resurgence of cases," Dr. Anthony Fauci, chief medical adviser to the White House, told "GMA3" on Friday. "So even though our cases are continuing to come down, I would not be surprised if in the next couple of weeks ... that we might well see an increase in cases."

The Centers for Disease Control and Prevention estimate that 23.1% of new cases in the U.S. are BA.2. Studies estimate that BA.2 is between 30% and 80% more infectious than the original strain, and federal data shows its presence in the U.S. is nearly doubling every week.

There are already initial indicators that the nation may be on the brink of an uptick as the nation begins to see a plateau in infection and hospitalization rates, which were previously declining.