on Business Insider

A new variant of COVID-19, which the World Health Organization (WHO) says could have the ability to evade the immunity people get from vaccines and previous infections, has been detected in almost every US state, according to data from epidemiology and genomic database Outbreak.info.

Called Mu, the B.1.621 variant was first detected in Colombia in January this year. As of September 4, cases of the strain have been reported in 47 US states and the District of Columbia, Newsweek was first to report.

The only states without reported cases are Nebraska, Vermont, and South Dakota, according to Outbreak.info’s data.

The strain is currently most prevalent in Alaska, where data suggests that 139 reported cases account for 4 percent of the total 3,837 sequenced samples.

California has the highest number in terms of raw numbers, the data show, with 232 reported cases of the B.1.621 variant out of 139,930 sequenced. This accounts for less than one percent of those sampled.

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