The variant of the coronavirus first found in India, or the Delta variant, is behind the second rise of Covid in the country, according to a government study.
The Delta variant, or strain B.1.617.2, is “more infectious” than the Alpha variant first detected in Kent, UK, according to a study conducted by the Indian SARS COV2 Genomic Consortia and the National Center for Cancer. Disease Control.
The Delta variant is, in fact, 50% more contagious than the Alpha strain, according to the study.
More than 12,200 variants of concern in the country, as revealed by genomic sequencing, says the study is still ongoing. But its presence is miniscule compared to the Delta variant, which replaced all other variants in the second wave.
The Delta variant is present in all states, but has infected the majority in Delhi, Andhra Pradesh, Gujarat, Maharashtra, Odisha and Telangana, which were the most affected in the second wave.
The role of the Delta variant in progressive infections, or Covid infections after vaccination, has also been found to be important.
There are no such cases of infection after vaccination when it comes to the Alpha variant.
But the study says the role of the Delta variant in more deaths or severity of cases is unproven.
Genome sequencing of 29,000 samples has been done in India, the study says. B.1.617 has been found in 8,900 samples. More than 1000 of those samples were analyzed for the Delta variant.