‘IHU’ variant of Covid-19: few cases, limited spread

Not a new variant

The B.1.640 variant is not new. It has been around for at least three months. The sudden discussion around it was triggered by the circulation of a week-old study by researchers from Méditerranée Infection in Marseille, part of France’s Instituts hospitalo-universitaires (IHU, or University Hospital Institutes).

The study reports the detection of a new variant in November last year among 12 people living in the same geographical area of southeastern France, the first of which had returned from a trip to Cameroon. The researchers said the variant found in these people was very similar to the one they had found earlier and named IHU.

The IHU variant that the researchers mention is B.1.640 which, according to global databases, was first discovered way back in January last year. The one that the French researchers found among people in November has now been classified as a sub-lineage B.1.640.2.

Not spreading rapidly

According to outbreak.info, a website that tracks the prevalence of different variants in genome sequencing databases, at least 400 infections with the B.1.640 variant have so far been identified. It has been detected in at least 19 countries. Interestingly, one of these sequences happens to be from India as well, the only one out of the roughly 90,000 sequences from India deposited in the global databases.

The highest number of sequences of this variant has come from France, where 287 cases have been confirmed until now. There are 17 cases from Germany and 16 from the United Kingdom. But the country where this variant appears to be the most prevalent is Congo, where 39 of the 454 genome sequences done so far belong to the B.1.640 lineage.

[“source=indiatoday”]