COVID-19 vaccine

A COVID-19 vaccine is any of the vaccines used against COVID-19 (a disease caused by the SARS-CoV-2 virus). In July 2020, more than 150 vaccines were being developed in different laboratories.[1] Two mRNA vaccines, one by Pfizer and one by Moderna, were approved late in 2020. Both are over 90% effective.[2] A few vaccines also went into use in early 2021.

Several countries planned to give the vaccine to many people, but their plans were different. The United Kingdom used its National Health Service. Canada used its military. The United States sent vaccines to all fifty states and the state governments each made their own system.[3]

The United Kingdom approved the Pfizer vaccine before the European Union or United States did. They began giving it to people on December 8, 2020.[4] The United States began giving people the vaccine on December 14, starting with health care workers in New York City.[5] By April 2021, several vaccines were in use around the world and hundreds of millions of people had been vaccinated.

World map showing vaccine approval status in 2021.

Covid vaccination started for children aged 12-14 in India on 16 March 2022 [6]

Covid vaccination for children aged 12-14 in India
  1. Amy McKeever (July 31, 2020). "Dozens of COVID-19 vaccines are in development. Here are the ones to follow". National Geographic. Retrieved July 31, 2020.
  2. Cite error: The named reference NYTModerna was used but no text was provided for refs named (see the help page).
  3. Richard Pérez-Peña (December 12, 2020). "How the Vaccine Rollout Will Compare in Britain, Canada and the U.S.". New York Times.
  4. Benjamin Mueller (December 8, 2020). "As U.K. Begins Vaccinations, a Glimpse of Life After Covid". New York Times. Retrieved December 14, 2020.
  5. "America begins its most ambitious vaccination campaign". New York Times. December 14, 2020. Retrieved December 14, 2020.
  6. "Covid vaccinations for children in 12-14 age group begins today". India Today. 16 March 2022. Retrieved 3 April 2022.

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