Flu A vs. Flu B: What’s the Difference and Which Is More Severe?
Learn the key differences between Flu A and Flu B, common symptoms, recovery time, and when to seek urgent care treatment.
A New, More Severe Flu Variant Is Spreading in the U.S.: What Families Need to Know
As the 2025–2026 flu season begins, health experts are closely watching a new, more severe flu variant spreading across the U.S. Known as subclade K of the H3N2 strain, this mutation may spread more easily and lead to more intense illness. For families—especially those with young children, older adults, or chronic health conditions—understanding the risks, symptoms, and prevention steps is key to staying safe this season.
Flu Season 2025: What to Know Before Getting Your Shot at Zenith Primary & Urgent Care
Flu season is here, and protecting yourself and your family starts with the annual flu shot. At Zenith Primary & Urgent Care in Marlborough, we make it easy to get vaccinated with both scheduled and same-day appointments. The 2025–2026 flu vaccine has been updated to better protect against the most common circulating strains, helping reduce your risk of serious illness this fall and winter. Learn when to get your shot, what’s new in this year’s vaccine, and what to expect after your visit — all from your local trusted care team at Zenith.
