Health experts are warning that a strong flu strain is starting to rise again after cases slowed last month. New data shows a small but steady increase in flu infections, suggesting the season is not over yet.
Figures from the Centers for Disease Control and Prevention show more positive flu tests and more visits to doctors for breathing-related illness. Several states are already reporting very high flu activity, raising concern among health officials.

Most new cases are linked to a strain known as H3N2, often called “super flu.” Doctors say this strain tends to cause more severe symptoms and can last longer than typical flu. Children are being affected first, which experts say often signals that adults may be next.
There is some encouraging news. Hospital admissions and flu-related deaths have continued to fall in recent weeks. This means the healthcare system is not under extreme pressure right now, but experts stress the risk remains, especially for vulnerable people.
Doctors continue to advise vaccination, particularly for adults over 45, children, and those with ongoing health conditions. The flu shot does not prevent every case, but it greatly lowers the chance of serious illness. Less than half of Americans have been vaccinated this season, which experts warn could allow cases to rise further.