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As of July 2022, the Omicron BA.5 subvariant accounted for the majority of COVID-19 cases in the US. The subvariant emerged in the US in late April.

Centers for Disease Control and Prevention
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Since late 2021, Omicron has been the dominant COVID-19 variant, more contagious than previous versions. As of July 2022, it was the only COVID-19 variant classified as a variant of concern. The designation applies to variants that show attributes, including an increase in transmissibility, more severe disease, or a reduction in antibody effectiveness.

For more on COVID-19, visit the cases and deaths map or track state-level progress on vaccinations.