One of the two studies, conducted in Scotland and published as a paper in progress online Wednesday, by researchers at the University of Edinburgh in the United Kingdom, indicated that the risk of hospitalization due to infection with the “Omicron” mutant was 67% lower compared to the “Delta” mutant.
The other study, published online Tuesday, by South African researchers, revealed that the probability of hospitalization with Omicron infection is 80% lower compared to those with Delta infection. However, once a patient is hospitalized, the risk of severe disease is not the same.
Both studies contain preliminary data that has not yet been published in a scientific journal.
The study, which was conducted in Scotland, included data from 23,840 cases with the Omicron mutation, and 126,511 cases with the Delta mutation, from November 1 to December 19.
The researchers, from the University of Edinburgh, the University of Strathclyde and Public Health in Scotland, took a closer look at the health implications of omicron infection compared to that of delta infection.
The results were as follows: 15 hospitalizations due to Omicron infection compared to 856 hospitalizations due to delta mutation.
For his part, James Naismith, director of the Rosalind Franklin Institute and Professor of Structural Biology at Oxford University, who was not involved in either study, said in a written statement distributed by the UK-based Science Media Center, on Wednesday, that “despite the small number of participants, the study advances Good news, as a two-thirds reduction in hospital admissions among fully vaccinated young adults indicates that Omicron symptoms will be milder for more people than Delta symptoms.”
و .شار Naismith pointed out that the study is accurate, but it is too early to conclude, because the data may change slightly with the introduction of more data and the presentation of results that will be reached by many studies in the coming weeks.
Naismith noted that some South African scientists had been saying that the symptoms of the Omicron mutant had been milder for some time.
“Although the low rate of hospitalizations is clear, omicron can cause severe disease in fully vaccinated people. Thus, if an omicron mutant continues to double every few days, it could lead to much more hospital admissions than delta, among fully immunized people,” he explained. .
The researchers found that the incidence of “Omicron” among people who had previously been infected with Covid-19 was 10 times higher compared to the “delta” mutant.
The data also showed that receiving a third dose of the vaccine reduced symptoms of the omicron mutant by 57%, compared to those who received the second dose 25 weeks ago.
“These early national data indicate that the risk of hospitalization with an omicron is two-thirds lower than with Delta,” the study authors wrote. “While the third booster dose provides greater protection against the delta mutant, it also provides significant additional protection against the risk of asymptomatic mutants. Omicron”.
The other paper included data on 161,328 cases of Covid-19 that were registered at the national level in South Africa, between October 1 and December 6.
Researchers from the National Institute of Infectious Diseases, the University of the Witwatersrand and the University of Cape Town found that 2.5 percent of people with an omicron infection were hospitalized during that period, compared to 12.8 percent of people with a delta infection.
In their paper, the researchers noted, “This data is early and results may change as the pandemic evolves.”
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