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In 2021, International Monetary Fund(IMF) proposed $50 billion to be spent on ensuring a faster rollout of coronavirus vaccines. 

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The first known infections from SARS-CoV-2 were discovered in Wuhan, China in 2019

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The Omicron variant starts from South Africa in November 2021

The first known infections from SARS-CoV-2 were discovered in Wuhan, China in 2019

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The Pfizer vaccine requires two doses, ideally 21 days apart.

That being said, the vaccine has shown to have a high efficacy rate after a single dose, up to 85 percent , according to a 2021 study published in the Lancet.

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Covishield and Covaxin are the vaccines made by India

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Sputnik V vaccine is made by Russia

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Sinopharm COVID-19 vaccine BIBP was developed by Sinopharm/China National Pharmaceutical Group.

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Carnivac-Cov covid-19 vaccine made by Russia in April 2021

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AstraZeneca COVID-19 vaccine Developed in the United Kingdom by the Oxford University and British-Swedish company AstraZeneca.