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 …

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 …

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.

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.

6 days ago · 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 28, 2025 · ECDC regularly assesses new evidence on variants detected through epidemic intelligence, rules-based genomic variant screening or other scientific sources.

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 …

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 …

May 28, 2025 · A new variant of COVID-19 is circulating in parts of the world and may be driving an increase in cases in the eastern Mediterranean, Southeast Asia and western Pacific regions.

For SARS-CoV-2, the emergence of various variants has significantly impacted its fitness, influencing factors such as transmissibility, infectivity, and immune evasion. This section …