“The Mu variant has a constellation of mutations that indicate potential properties of immune escape," the bulletin said.
The WHO noted that the qualities of this type of virus contain the risk of resistance to the vaccines but further researchers needed to understand its peculiarities better.
The Mu strain is known in science as B.1.621 was firstly discovered in Columbia in January. The WHO experts have qualified it as the “variant of interest”.
Later, the Mu strain was reported in other countries of South American and in Europe. According to the WHO, its global spread has reduced up to less than 0.1% among registered cases of infection. The rate in Columbia is 39%.
Currently, the WHO defines four Covid-19 variants that raise concern, including Alpha in 193 countries and Delta in 170 countries. Five variants are monitored, including the Mu.
Earlier, the Ministry of Healthcare of Ukraine claims that there is a difference between the symptoms of infection with the original version of the coronavirus and the Delta mutation.