12/15/2025
Flu season isn’t just one virus—there are actually four types, but Flu A and Flu B are the ones we run into most.
Flu A is the heavyweight: more common, hits adults harder, mutates more, and usually peaks in fall and early winter. It often feels rougher and can leave a lingering cough or congestion for up to two weeks.
Flu B sticks strictly to humans, spreads more quietly, and tends to show up later—late winter into early spring.
Both can bring body aches, chills, fever, fatigue, sore throat, and a stubborn cough. And yes, it’s possible to have both at once.
The care is the same: plenty of rest, steady hydration, and supportive treatment. Most people bounce back in 3–7 days.
Sources:
https://www.osfhealthcare.org/blog/flu-a-vs-flu-b-which-is-worse
https://uoflhealth.org/articles/are-there-differences-between-flu-a-and-flu-b/
https://www.ncoa.org/article/whats-the-difference-between-flu-a-and-flu-b/