Sputnik V (Russian: Спутник V, the brand name from RDIF) or Gam-COVID-Vac (Russian: Гам-КОВИД-Вак, the name under which it is legally registered and produced) is an adenovirus viral vector vaccine for COVID-19 developed by the Gamaleya Research Institute of Epidemiology and Microbiology in Russia. It is the world's first registered combination vector vaccine for the prevention of COVID-19, having been registered on 11 August 2020 by the Russian Ministry of Health. Gam-COVID-Vac was initially approved for distribution in Russia and then in 59 other countries (as of April 2021) on the preliminary results of Phase I–II studies eventually published on 4 September 2020. Approval in early August of Gam-COVID-Vac was met with criticism in mass media and discussions in the scientific community as to whether approval was justified in the absence of robust scientific research confirming safety and efficacy. A large-scale Brazilian study from Dec. 2020 to May 2021 confirmed its effectiveness and safety, as of Oxford–AstraZeneca's, i.e. above Sinopharm BIBP's. More information...
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