Flu Season 2025 Months

Flu Season 2025 Months. In general, flu season in the us lasts from october to as late as may, peaking between december and february. Back to school, cooler weather, a whiff of pumpkin spice in the air.

What’s different about new flu vaccines? Trivalent flu vaccines are formulated to protect against three flu viruses (an a(h1n1) virus, an a(h3n2) virus, and a b/victoria virus).