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Sep 1, 2023 · Variants of SARS-CoV-2, the virus that causes COVID-19, have been reported in many countries around the world. Learn more about the current variants of concern. CDC provides credible COVID-19 health information to the U.S.
Sep 1, 2023 · New variants are an expected part of the evolution of viruses, and that includes SARS CoV-2, the virus that causes COVID-19. Yale Medicine provides some background on key variants that have surfaced during the course of the pandemic.
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May 3, 2024 · A Variant of Concern (VOC) is a term that describes a SARS-CoV-2 variant that meets the definition of a VOI (see above), but also meets at least one of the following criteria when compared with other variants:
Nov 4, 2023 · 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 cause people to get sicker.
Apr 8, 2022 · A variant of concern has been observed to be more infectious, and is more likely to cause breakthrough infections or reinfections in those who are vaccinated or previously infected. These variants are more likely to cause severe disease, evade diagnostic tests, or resist antiviral treatment.
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 (VOCs) in order to prioritize global monitoring and research, and to inform and adjust the COVID-19 response.
