write an article on covid vaccination
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SARS-CoV-2, the virus that causes coronavirus disease 19 (COVID-19), has spread rapidly around the world.
Millions of people have contracted the virus, and it has contributed to nearly 2 million deaths.
Researchers have been working around the clock to develop effective vaccines, which people started receiving in December 2020.
This article looks at the types of COVID-19 vaccine, how they work, their safety, and how to get one.
Different vaccines are now available in various countries. In the United States, vaccines need approval from the Food and Drug Administration (FDA).
First, they need to pass through three phases of tests to prove that they are safe and effective. The last stage, phase 3, involves tens of thousands of participants.
At the time of writing, two vaccines have FDA approval for use in the U.S.:
the Pfizer-BioNTech COVID-19 vaccine
the Moderna COVID-19 vaccine
The Pfizer-BioNTech vaccine, developed in Germany, received FDA approval in the form of an emergency use authorization on December 11, 2020.
In a phase 3 trial involving more than 43,000 people, around half received a placebo and half received two doses of the vaccine, 21 days apart. The results showed that the vaccine was 95% effective at protecting against COVID-19.
The Moderna vaccine, developed in Cambridge, MA, received approval for emergency use in the U.S. on December 18. In a phase 3 trial, 30,000 volunteers received either a placebo or two doses of the vaccine, 28 days apart. The results indicated that the vaccine was 94% effective.
Other vaccines
Other vaccines that have approval for use in various countries include:
The Oxford AstraZeneca vaccine, in the United Kingdom
Coronavac, developed by Sinovac, in China
The Sputnik V vaccine, in Russia
Covaxin, developed by Bharat Biotech, in India
Meanwhile, the Novavax vaccine is currently undergoing phase 3 trials, as is Janssen’s COVID-19 vaccine. Both were developed by companies based in the U.S.
A person can keep up to date with the latest vaccine developments in the country using the Regulatory Affairs Professionals Society’s COVID-19 vaccine tracker.
Answer:
covid -19
Explanation:
covid is a