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Covid-19: Delta variant causing most post-vaccine infections

Genome sequencing shows that the Delta variant continues to be the dominant lineage causing new Covid-19 cases. Study als shows that there is strong evidence that vaccination offers a high level of protection, the Indian SARS-CoV2 Genomics Consortium (INSACOG) said. The Delta variant — which has high transmissibility and is more virulent as compared to others — contributed to a majority of clinical cases in vaccine breakthrough (infections post vaccination) but very few cases needed hospitalisation, a latest study by the Indian Council of Medical Research (ICMR) shows. Only 9.8% cases required hospitalisation and fatality was as low as 0.4%. Underlining the importance of vaccination and the need to continue with Covid-appropriate behaviour like use of masks, physical distancing and hand hygiene, INSACOG said: "Continuing outbreaks across India are attributable to Delta, a susceptible population, and opportunities for transmission. Public health measures to reduce transmission and vaccination remain critical."

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