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An article published by the journal Nature on 6 July 2021 cited data released by the United Arab Emirates on some 81,000 individuals who had received Sputnik V, according to which the vaccine demonstrated an efficacy of 97.8% in preventing symptomatic COVID-19, and 100% efficacy in preventing severe complications.
A vaccine is generally considered effective if the estimate is ≥50% with a >30% lower limit of the 95% confidence interval. [6] As of September 2021, no study on Sputnik Light reported confidence intervals, so it is not possible to know the accuracy of the estimates. Effectiveness is generally expected to slowly decrease over time. [7]
There is emerging evidence that the shingles vaccine may protect against dementia. [55] A 2024 study of over 200,000 older US adults found that the recombinant shingles vaccine was linked to a larger reduction in dementia compared to the live shingles vaccine. [56] Over a six-year follow-up, those who received the recombinant vaccine had a 17% ...
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The trial testing the immune response of co-administration of GSK's blockbuster vaccines, Shingrix and Arexvy, in adults over 50 years of age, met the main goal of the study. The co-administration ...
Shingles can lead to serious problems such as deafness, long-lasting pain, and blindness. Shingles vaccine can delay onset of dementia – study Skip to main content
Retrospective cohort study of the effectiveness of two Russian vaccines against the SARS-CoV-2 Delta variant in Moscow (June–July 2021) proved that EpiVacCorona, unlike Sputnik V, is an ineffective vaccine and therefore cannot protect against COVID-19.
Influenza Vaccine. Vaccine efficacy or vaccine effectiveness is the percentage reduction of disease cases in a vaccinated group of people compared to an unvaccinated group.For example, a vaccine efficacy or effectiveness of 80% indicates an 80% decrease in the number of disease cases among a group of vaccinated people compared to a group in which nobody was vaccinated.