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2. Oxford–AstraZeneca COVID-19 vaccine - Wikipedia

   en.wikipedia.org/wiki/Oxford–AstraZeneca_COVID...

   Between 8 December 2020 and 15 February 2021, 1,137,775 participants were vaccinated in the study, 490,000 of whom were given the Oxford–AstraZeneca vaccine. The first dose of the Oxford–AstraZeneca vaccine was associated with a vaccine effect of 94% for COVID-19-related hospitalisation at 28–34 days post-vaccination.

3. Pfizer–BioNTech COVID-19 vaccine - Wikipedia

   en.wikipedia.org/wiki/Pfizer–BioNTech_COVID-19...

   Preliminary data suggest that the effectiveness against the Omicron variant starts to decline in about 10 weeks, either after the initial two-dose regimen or after the booster dose. [ 97 ] [ 100 ] For other variants, the effectiveness of the initial doses starts to decline in about six months. [ 102 ]

4. COVID-19 vaccination in Canada - Wikipedia

   en.wikipedia.org/wiki/COVID-19_vaccination_in_Canada

   On June 1, NACI approved the mixing of the three approved vaccines in Canada (Pfizer-BioNTech, Moderna, and AstraZeneca-Oxford). Specifically, they recommended mixing a first dose of the AstraZeneca vaccine with a second dose of one of the mRNA vaccines and mixing a first dose of a Pfizer or Moderna vaccine with a second dose of either mRNA ...

5. U.S. CDC recommends five-month gap for Pfizer COVID-19 ... - AOL

   www.aol.com/news/u-cdc-endorses-five-month...

   The move follows the U.S. Food and Drug Administration's decision on Monday to reduce the interval for the booster dose and authorize the use of a third dose of Pfizer-BioNTech vaccine for ...

6. Janssen COVID-19 vaccine - Wikipedia

   en.wikipedia.org/wiki/Janssen_COVID-19_vaccine

   It was designed as a randomized, double-blind, placebo-controlled clinical trial intended to evaluate the safety and efficacy of a single-dose vaccine versus placebo in adults aged 18 years of age and older. Study participants received a single intramuscular injection of Ad26.COV2.S at a dose level of 5×10 10 virus particles on day one. [114]

7. COVID-19 vaccine clinical research - Wikipedia

   en.wikipedia.org/wiki/COVID-19_vaccine_clinical...

   It suggests that personalization of the vaccine dose (regular dose to the elderly, reduced dose to the healthy young, [359] additional booster dose to the immunosuppressed [360]) might allow accelerating vaccination campaigns in settings of limited supplies, thereby shortening the pandemic, as predicted by pandemic modeling.