Flu season is winding down, but the Centers for Disease Control are warning about a second wave of Flu Virus B, which is happening right now.

The CDC says that B-viruses are being reported more frequently than the A-strain, which had been more dominant recently. A CDC spokesperson says B-strain viruses tend to be more severe for younger children.

Experts say it’s possible for those who have already been sick with the flu to fall ill again with a different strain later in the season.

Dr. Alexander Evens from Marin General Hospital spoke to KRON4 News about what you need to look out for. Watch the video above for more information

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