According to a senior official of the Russian consumer health agency Rospotrebnadzor, a highly infectious subvariant of the COVID-19 Omicron strain has infiltrated Russia.
The viral genome of the BA.4 subvariant has been submitted to the VGARus database by two national laboratories, according to Kamil Khafizov, the head of genome research at Rospotrebnadzor’s Central Research Institute for Epidemiology.
“Samples date back to late May,” Khafizov said.
The scientist added that the BA.2 subtype still accounted for 95% of all new cases in Russia.
Also Read: 12 cases of Omicron subvariants detected in Tamil Nadu
“A number of studies published recently have revealed that variants, known as BA.4 and BA.5, are a little bit more transmissible that the early forms of Omicron,” he said.
The head of the World Health Organization warned in May that Omicron sublineages BA.4 and BA.5 were driving a surge of the disease in unvaccinated countries, although the BA.2 subvariant remains dominant across the world.
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