7 hours ago · WASHINGTON (AP) — Flu is rising rapidly across the U.S., driven by a new variant of the virus — and cases are expected to keep growing with holiday travel.

Aug 28, 2025 · New variants of SARS-CoV-2 are expected to continue to emerge. Some variants will emerge and disappear, while others will emerge and continue to spread and may replace previous …

6 hours ago · A new flu variant is known as “subclade K,” and led to early outbreaks in the United Kingdom, Japan and Canada.

Dec 24, 2025 · Get the latest COVID-19 news from infectious diseases expert Mark Rupp, MD, including COVID-19 case rates, types of variants circulating and vaccine updates.

Dec 12, 2025 · The Stratus variant is fueling COVID-19 cases around the country. Symptoms of the virus look slightly different right now. Here, doctors share what to look out for and how to protect …

Aug 5, 2025 · A new COVID-19 variant is climbing the ranks in the United States, becoming the third-most common strain of the summer.

Aug 27, 2025 · New cases of COVID-19 are increasing nationwide, fueled by the Stratus variant, an emerging offshoot of the Omicron variant.

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 material of …

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 used to evaluate …