Historically, the WHO regularly listed updates on variants of concern (VOC), which are variants with an increased rate of transmission, virulence, or resistance against mitigations, like vaccines.

Aug 28, 2025 · Some variants will emerge and disappear, while others will emerge and continue to spread and may replace previous variants. It is important to track the emergence of variants so that …

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 …

Discover how COVID-19 2026 looks now, including new COVID-19 symptoms, what to know about each new COVID-19 variant, and when to test or seek care.

Nov 10, 2025 · Variants carrying resistance mutations were often antigenically distinct from the variants that preceded them, affecting antibody treatments and vaccine effectiveness.

Jun 18, 2025 · Here, you can find out what mutations define a variant, what impact they might have (with links to papers and resources), where variants are found, and see the variants in Nextstrain builds!

Aug 29, 2024 · AAMCNews spoke with academic experts in infectious disease, viruses, and vaccines to answer some common questions about the latest variants and the new vaccines.

Oct 24, 2025 · Concern over variants, sometimes called strains, of the virus that causes COVID-19 is based on how the virus might change. A virus could get better at infecting people, spread faster or …

5 days ago · 2024-2025 COVID-19 vaccines reduced hospitalization risk by 40% against JN.1 lineage variants. COVID-19 is still a public threat and health concern. Between 2024 and 2025, an estimated …

May 30, 2025 · What is a variant, and where do variants come from? A variant is a subgroup of viruses within a species that share an inherited set of distinctive changes in their genetic code.