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 …

Mar 27, 2024 · In late 2020, the emergence of variants that posed an increased risk to global public health prompted WHO to characterize some as variants of interest (VOIs) and variants of concern …

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!

The emergence of SARS-CoV-2 variants has significantly impacted the global response to the COVID-19 pandemic. This review examines the genetic diversity of SARS-CoV-2 variants, their roles in …