Limited data on who is testing positive for flu suggest about two-thirds are kids and young adults. Kids have driven flu’s spread in past years, so “it’s quite possible we could see continued increases,” Brammer said.

Dr. Angela Branche, a University of Rochester infectious diseases specialist, called the flu season unusual.

“I don’t have any (flu) cases in my practice this week,” she said recently. Normally, doctors in Rochester would be diagnosing 50 to 100 flu cases a day around this time of year.

It seems like the current flu season is “easing to the finish line,” said Dr. William Schaffner, a Vanderbilt University infectious diseases expert. But viruses can be unpredictable.

“As the flu-ologists like to say, ‘if you’ve seen one flu season, you’ve seen one flu season,’” he said.