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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.
Moderna has launched a trial of a vaccine to tackle the Beta variant or lineage B.1.351. [460] On 17 February 2021, Pfizer announced neutralization activity was reduced by two-thirds for this variant, while stating that no claims about the efficacy of the vaccine in preventing illness for this variant could yet be made. [461]
The Moderna news followed preliminary results from the Pfizer-BioNTech vaccine candidate, BNT162b2, with Moderna demonstrating similar efficacy, but requiring storage at the temperature of a standard medical refrigerator of 2–8 °C (36–46 °F) for up to thirty days or −20 °C (−4 °F) for up to four months, whereas the Pfizer-BioNTech ...
Vaccines from AstraZeneca, Russia's Gamaleya Institute and Johnson & Johnson fight the coronavirus with another virus, leaving scientists concerned the shots may lose potency if annual ...
The experimental vaccine, which met the main trial goal, was being tested in more than 11,000 people aged 12 years and older. The shot showed superior efficacy in adults than the current vaccine ...
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 ...
The head of the Russian Direct Investment Fund (RDIF) stated that 20 countries had requested in total 1 billion doses of the vaccine, nicknamed Sputnik V. [11] On August 20 registration was called "conditional" with final registration depends on results of Phase 3 trial, [12] such registration is limited and allowed by Decree 441 for medicines ...
On 29 June 2021, the director of the Gamaleya Institute, Denis Logunov, said that Sputnik V is about 90% effective against the Delta variant. [81] On July 21, researchers from PHE published a study finding that the Pfizer vaccine was 93.7% effective against symptomatic disease from Delta after 2 doses, while the Astrazeneca vaccine was 67% ...