Jan 4, 2026 · This is read by an automated voice. Please report any issues or inconsistencies here. WASHINGTON — Flu is rising rapidly across the U.S., driven by a new variant of the …

Jan 2, 2026 · Discover new COVID variant symptoms in 2026, understand respiratory infection risks, and learn effective protection strategies to stay safe and informed.

Sep 18, 2025 · The latest COVID-19 variant known as XFG, nicknamed Stratus, continues to spread throughout the United States, driving a summer spike in cases.

Dec 2, 2024 · When these changes become significantly different to a previously detected virus, these new virus types are known as “variants.” To identify variants, scientists map the genetic …

Sep 24, 2025 · The new COVID-19 variant, Stratus, is driving cases in the U.S. Learn how contagious it is, common symptoms, vaccine protection, and where cases are rising.

Sep 4, 2025 · Scientists at CDC conduct detailed analyses of the sequence data to identify variants and actively monitor which variants are most common in the U.S. These data are …

Jan 2, 2026 · The “super flu” behind outbreaks in the US and UK is a new variant of influenza A H3N2, subclade K. Existing vaccines appear to be insufficiently effective against the virus.

Oct 24, 2025 · If a mutation changes how a virus acts in a group of people, it's called a variant. Scientists across the world track the changes in the virus variants that cause COVID-19.

Variants of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) are viruses that, while similar to the original, have genetic changes that are of enough significance to lead …

Oct 12, 2025 · A variant is when a virus changes (mutates) from the original version—for example, an error in the genetic code happens when the virus is replicating. A variant is like a …