Covid: why is Omicron ultimately as serious as the other variants?

For several months, the Omicron variant was considered more transmissible but less severe than its predecessors. Wrongly.

Omicron is as serious as Delta. But also that all the others variants virus SARS-CoV-2. This is what a large study carried out in the UNITED STATESthe results of which contradict previous studies and the adage that Omicron is more transmissible and less severe. “We found that the risks of hospitalization and mortality were almost identical between the periods”conclude the four scientists from Massachusetts General Hospital, Minerva University and Harvard Medical School, who conducted the study with 130,000 patients.

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Boundaries

The study is in the pre-publication stage and is subject to verification by the scientific community. Nevertheless, the authors assume that past studies conducted in various locations – including theSouth AfricaI’ScotlandI’England and the Canada – have some limitations. In particular a number of patients vaccinated as well as a total number ofinfections underestimated in recent Omicron waves, with these studies excluding patients who performed rapid home tests.

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