The unexpected discovery of Omicron dispels previous myths
Omicron variant as severe as previous COVID-19 variants, not as mild as previously thought.
Reuters reported, four scientists conducted the study based on the records of 130,000 patients COVID-19 “We found that the risks of hospitalization and death were roughly the same across time periods,” said the study.
The study – which is being peer-reviewed at Nature Portfolio and published on Research Square today – was adjusted for confounding factors including demographics, immunization status and Charlson comorbidities, index used to assess comorbidities and benefits/risks of a medical intervention.
Scientists from Massachusetts General Hospital, the University of Minerva and Harvard Medical School said that studies assuming a less severe variant of Omicron have been conducted in various places including South Africa. , Scotland, England and Canada.
According to the scientists, their study may have some limitations, including underestimating the number of vaccinated patients during more recent COVID-19 episodes and the total number of cases, because the study excluded patients who perform a rapid test at home.
The Omicron variant was first reported to the World Health Organization (WHO) from South Africa on 24 November 2021. The Omicron variant has a large number of mutations, some of which are worrisome. Preliminary evidence obtained suggests an increased risk of reinfection with this variant compared with other strains.
Omicrons have been found to infect faster than previous waves, suggesting that this variant may have a growth advantage. However, research published on the medical site medRxiv shows that the Omicron variant causes milder symptoms than earlier variants of the virus. SARS-CoV-2. The risk of requiring intensive care was reduced by 74%, while the risk of death was reduced by 91%. In addition, Omicron-infected patients recovered faster and were discharged earlier than Delta-infected patients.
This is the result of a study based on data of COVID-19 cases at the Kaiser Permanente health care system in Southern California (USA) from November 30, 2021 to January 1, 2022.
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