According to the Centers for Disease Control and Prevention, the incidence of influenza is increasing among children and young adults

The Centers for Disease Control and Prevention issued a health warning Wednesday that flu cases have risen among young adults in recent weeks.

While cases of the flu remain low nationally, more than 90 percent are among children and young adults ages 5 to 24, according to the CDC.

Most cases are from the H3N2 strain – a strain that health experts say is particularly troublesome because it tends to mutate faster than other types of influenza. The last time H3N2 was the dominant strain The 2017-2018 flu season, when the US saw 710,000 flu-related hospitalizations and 52,000 flu-related deaths, was the worst since 2009 H1N1 influenza pandemic.

CDC map shows influenza rates.Center for Disease Control

The CDC was investigating a flu outbreak at the University of Michigan where hundreds of students tested positive for the flu. Flu outbreaks have been reported on other university campuses in the past month.

Experts are concerned that college students and young adults who may have been exposed to the flu could spread across the country as they are Travel home for holidays.

said Dr. Isaac Bogoch, an infectious disease specialist at the University of Toronto.

People, especially those most at risk of serious illness, said, He must be vaccinated Because the virus does not stay within a certain age group for long.

“It’s coming,” he said. “It’s not entirely clear how much flu season we’re going to see but we’re going to see flu season,” he said.

Flu season usually runs from October to late May, and activity tends to peak between December and February, According to the Center for Disease Control and Prevention.

And flu experts had previously said they were concerned that the nation might be At risk of severe flu season this year After seasonal flu cases reached an all-time low last year when large parts of the country were shut down due to the pandemic.

Experts urge people to Get flu and COVID-19 vaccinationsThe surge in flu infections this winter could put an extra burden, he said

In the country’s health care system, which is already dealing with an increase in coronavirus cases.

As part of health guidelines, the CDC recommends that people with flu-like symptoms get tested for both the flu and COVID-19.

This story first appeared NBCNews.com. Continued NBC Health employment Twitter & Facebook social networking site.

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