CBS Local — Although the flu season may be winding down, the CDC has some bad news for Americans as a second wave of the potentially fatal illness is reportedly spreading across the country.

In a March 23 release the CDC announced that overall flu cases are finally dropping however, “Influenza B” cases have jumped above the more common “Influenza A” virus. Cases of the B-strain made up nearly 60 percent of the country’s flu cases reported during the week of March 17.

“We know that illness associated with influenza B can be just as severe as illness associated with influenza A,” CDC spokesperson Kristen Nordlund said, via CNN. “We also know that influenza B tends to be more severe for younger children.”

Nordlund added that it’s possible for people who have been sick with one strain of the flu to become infected with a different strain within the same season. The CDC spokesperson admits the agency doesn’t know how severe the spread of Influenza B will be in 2018 and is still urging Americans to get a flu shot.

To this point, 26,694 people have been hospitalized with flu-related symptoms. Nearly 80 percent of those cases have been for Influenza A. Influenza B’s tendency to affect children more severely makes a late-season outbreak of the strain highly concerning. Since October 2017 133 children have died due to the flu.

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