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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.
[353] [354] [355] Aiming for a realistic population vaccination coverage rate of 75%, and depending on the actual basic reproduction number, the necessary effectiveness of a COVID-19 vaccine is expected to need to be at least 70% to prevent an epidemic and at least 80% to extinguish it without further measures, such as social distancing.
Pfizer and Moderna vaccines are both safe and have similar effectiveness at preventing COVID-19 illness. Clinical trial data when they were first released in December 2020 showed 95% efficacy for ...
Sputnik V (Gam-COVID-Vac) is one of three Covid vaccines worldwide with an efficacy higher than 90% in symptomatic cases. It was found to be slightly less effective however it worked better than its rivals. A three fold reduction in VNA was found against the beta variant.
“Moderna and Pfizer updated their mRNA vaccines to target the KP.2 variant, while the Novavax is a protein-based vaccine and is targeting the JN.1 variant.” The difference is due to the timing ...
This man may hold the cure to the coronavirus pandemic in his hands. Alexander Gintsburg is the head of the Gamaleya Institute -- the organization that produced Russia's Sputnik V vaccine. Its ...
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]
The updated Covid vaccines should be more accessible, experts say. Saturday 16 September 2023 21:00, Maggie O’Neill. The cost of the new Covid vaccines may prohibit some people from getting them ...