THE VARIANT Delta of Sars-CoV-2 doubles the risk of hospitalization for Covid-19 compared to the Alfa variant. This is confirmed by a new one studio British, the largest so far conducted, based on 40,000 cases confirmed by whole genome sequencing, the most accurate way to determine the virus variant. These are cases analyzed in England between March 29 and May 23, 2021. The probability of needing emergency visits or hospitalization was also one and a half times greater for people infected with Delta.
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by Giuliano Aluffi
The study was published in The Lancet Infectious Diseases. The findings suggest that outbreaks supported by this variant, first reported in India in December 2020 and now prevalent in Europe, may lead to a greater burden on health services than those caused by the Alpha mutant, first identified in the United Kingdom, and formerly dominant, “particularly in unvaccinated people and other vulnerable populations”.
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The increased risk of hospitalization is in fact especially among those who are not vaccinated or partially vaccinated. In particular, among the Covid-19 cases (with both variants) analyzed only 1.8% had received both doses of the vaccine; 74% were not vaccinated and 24% were partially vaccinated.
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For both variants, full immunization, the study says, prevents both infection with symptoms and the need for hospitalization. “We already know that vaccination offers excellent protection against Delta and as this variant accounts for over 98% of Covid-19 cases in the UK, it is imperative that those who have not received two doses of the vaccine do so as soon as possible.” , comments Gavin Dabrera, one of the study’s lead authors and epidemiologist consultant for the National Infection Service, Public Health England.
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