Geneva: The new Covid-19 variant called B.1.640, which was detected by French researchers and is probably of Cameroonian origin, is not "circulating widely at the moment" and has so far been identified in less than 1 percent of the samples sequenced in France, the World Health Organization (WHO) said.
The strain is also known as the 'IHU' variant because it was first identified by academics at the IHU Mediterranee Infection institute in Marseille, France, reports Xinhua news agency.
At a press briefing on Thursday, Maria van Kerkhove, technical lead for the WHO's Health Emergencies Program, said that the variant was first detected in September 2021 in a number of countries.
Following internal discussions, the WHO classified it as a "variant under monitoring" (VUM) in November 2021.
According to the WHO's definition, a VUM is a SARS-CoV-2 variant with genetic changes that are suspected to affect virus characteristics, which may pose a future risk, but evidence of phenotypic or epidemiological impact is currently unclear, thus requiring enhanced monitoring and repeat assessment pending new evidence.