Less than 20 cases of the new COVID-19 variant, NB.1.8.1, had been reported in the U.S., as of Tuesday, May 27.

Symptoms appear to be similar to other variants of COVID-19 and the public health risk remains low, WHO information shows.

While the WHO points out that NB.1.8.1 is “growing rapidly compared to co-circulating variants,” the agency also notes that there’s no evidence that the variant will cause more health risks compared to the current Omicron variants that are circulating.