Cases across the country had appeared to decline before new public health data showed upticks in infections.

The current flu season has seen the highest rate of doctor’s visits for flu-like symptoms since the US began collecting data through a national surveillance network. CNN is tracking these case rates ...

“When compared to last year, we are seeing significantly more flu activity earlier in the year, even despite a slow start to the traditional flu season, and the season has not appeared to peak yet — ...

We asked a doctor for his expert take.

According to the Massachusetts Department of Public Health, influenza activity is “high” across the state. From the week of ...

If you have not gotten your flu vaccine, state public health officials are urging you to do so as Illinois could see another surge in cases.

Four children in Colorado have died from flu-related illnesses so far this flu season, according to the Colorado Department of Public Health and Environment. Health ...

"We're not finished with the flu season yet," Dr. William Schaffner, a professor of infectious diseases at Vanderbilt ...

NYC reports 146,000+ flu cases and a small weekly uptick; kids account for 52% of infections. Vaccines and antivirals urged.