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Sputnik Light is a registered single-dose vaccine consisting of only the first dose of Sputnik V. It is intended for areas with acute outbreaks and it will be used as a third ( booster ) dose for those who have received Sputnik V at least 6 months earlier.
In August 2021, RDIF announced that preliminary results from a study on heterologous prime-boost vaccination indicate that it is safe to administer Sputnik Light as the first dose, then the Oxford–AstraZeneca, Moderna or Sinopharm BIBP vaccine as the second dose, as well as the homologous course consisting of Sputnik Light as the second dose ...
In August 2021, the FDA and the CDC authorized the use of an additional mRNA vaccine dose for immunocompromised individuals. [318] [319] The authorization was extended to cover other specific groups in September 2021. [320] [321] [322] In October 2021, the FDA and the CDC authorized the use of either homologous or heterologous vaccine booster ...
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 ...
An updated Coronavirus booster that targets a new variant is expected to be made available in September Updated Covid vaccines from Pfizer and Moderna rolled out nationwide: Latest Skip to main ...
The new Covid boosters appear to work against the BA.2.86 omicron subvariant, Moderna and Pfizer said Wednesday. New Covid boosters work against the highly mutated BA.2.86 variant, vaccine makers ...
Multiple studies have confirmed the effectiveness of a booster dose given on top of the two normal doses of the Pfizer–BioNTech COVID-19 vaccine. There is evidence that those who have received a boosted dose experience reduced severity of infection, [22] in addition to reduced likelihood of developing COVID-19 to begin with. [23]
While the efficacy rates were lower than the Pfizer–BioNTech and Moderna vaccines, its single-dose regimen and normal refrigerator storage requirement (2 to 8 °C) could make it a favorable option for many countries. It has similar efficacy to the Janssen vaccine, another one-shot adenovirus vaccine found to be 66% effective in a global trial.
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