This article was originally published in November 2020. Given information is constantly changing, we have updated it to include 2021 findings, and will continue to update it monthly in 2022.To get more news about
sinopharm vaccine: latest update, you can visit shine news official website.
In the year 2021, humanity witnessed the biggest global vaccination campaign in history. More than 9 billion doses of the corona vaccine have been administered around the globe so far.
We now have several vaccines to combat the corona pandemic. But how do these vaccines compare? How are they different? Which one is the best COVID-19 vaccine?
Pfizer/BioNtech and Moderna were the most groundbreaking of all vaccines. They introduced the fairly new (and thankfully, successful) mRNA vaccine technology. Sputnik V, AstraZeneca, Johnson & Johnson, Covishield, Sinopharm, Novavax, and others followed soon after.
This article will compare the different COVID vaccines in light of what we’ve learned in 2021, with monthly updates of what we learn in 2022.The Pfizer vaccine was the first-ever approved corona vaccine. It was also the first mRNA vaccine in history to be authorized for public use. It was produced by a collaboration between the American pharmaceutical giant, Pfizer, and an innovative German biotechnology firm, BioNTech.
Soon after the approval, the vaccine gained wide support from the WHO and health authorities all around the world. It’s now regarded by many as the best COVID vaccine available, however, this remains subjective to many factors.
Technology and Dosage
The Pfizer/BioNTech vaccine introduced a new technology to the vaccine market; mRNA vaccines. These vaccines are based on genetic mRNA molecules. The mRNA (messenger RNA) carries the genetic code for the “spike” protein, an antigen specific for the SARS-CoV-2.
Once injected, the mRNA enters your body cells, making them produce the spike protein themselves.This allows your immune system to prepare to combat the actual infection if it happens.
The vaccine is given in 2 doses, with 3-4 weeks between the first and second dose. A third booster dose with the same vaccine is now recommended after 5-6 months.
Moreover, Pfizer is recommended as a booster for those who received vaccines from other classes. This includes AstraZeneca, Johnson & Johnson, and Sinopharm (non-mRNA vaccines).Ever since the Pfizer/BioNTech vaccine got approved in December 2020, there have been many studies to assess its effectiveness.
The original trial by Pfizer showed that the 2 shots of the vaccine were 95% protective against COVID-19.
However, scientists observed that immunity wanes with time, and that a 3rd dose re-boosts protection against the coronavirus. This is why now, the term “fully vaccinated” means 3 jabs and not just two.
Three doses of the Pfizer/BioNTech vaccine were found to be protective against disease in 95.6% of individuals. The study analyzed data from nearly 10,000 individuals who got their third booster dose.