COVID's new variant Kraken causing concern: All you need to know
A new version of Omicron XBB.1.5 has raised concerns in many countries including India where its cases have been reported, and it has the capability to infect even those who have been vaccinated, according to experts.
It has been nicknamed the "Kraken variant" by some.
Should India be worried?
According to Dr Rajeev Jayadevan, Co-chairman of the National IMA Covid task force, XBB.1.5 is an upgraded version of XBB, a recombinant sub-lineage of Omicron that was found a few months ago in multiple countries like Singapore and later in India.
"XBB.1.5 has a greater ability to attach itself to the human ACE-2 receptor while retaining the outstanding immune evasiveness of its ancestor," he said.
Dr Jayadevan further explained that this variant has the ability to infect those who had a prior infection or even vaccination.
"Immune evasiveness is the ability of the virus to infect people who had prior infection or vaccination or both. XBB.1.5 achieved this by creating a rare type of mutation called F486P, located in its RBD (receptor binding domain). It is not known whether it causes more severe diseases. Experts believe it is unlikely to do so," the expert said.
However, he said that continued vigil is needed to see if these ongoing genetic changes also enable the virus to cause more severe disease.
"The latest genomic surveillance data from India show XBB accounts for 20 per cent, while the older variant BA.2.75 is still dominant. This landscape could change," he said.
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