Pfizer Vaccine

The vaccines are being rolled out. Pfizer’s first shipments are being delivered to hospitals across the United States, with healthcare workers receiving the first doses. Moderna is set to receive FDA approval within the next week, so more vaccines will follow. You are probably wondering how long before the COVID-19 vaccine reaches you?

8. Pfizer COVID-19 Vaccine Effectiveness


Everyone is excited about the COVID-19 vaccine. Pfizer’s vaccine has a 90 percent effectiveness and other vaccine manufacturers are reporting comparable results. Once enough people are vaccinated, life can again return to normal.

The vaccine, known officially as BNT162b2, had a 90 percent effectiveness rating in Phase 3 trials. The trials involved 45,538 study participants and they all received two doses of the vaccine. However, as more data rolls in, the effectiveness of the vaccine might change, warns H. Dirk Sostman, MD, president of the Houston Methodist Academic Institute.

7. How Does the Vaccine Work?

Covid Vaccine Study

The Pfizer vaccine was developed alongside the German company BioNTech and is a new form of the vaccine. It relies on mRNA to teach the body’s cells how to make a replica of the spike protein that occurs on the surface of SARS-CoV-2, which is the virus that causes COVID-19.

Once the body recognizes the virus, it can then produce antibodies that neutralize the real virus if it should encounter it.

The Pfizer vaccine requires two doses for effectiveness and the person might not achieve full immunity for a month after the first dose. In addition, no one is sure how long the immunity will last, or exactly how effective the vaccine will be for individuals over the age of 65 or in young children.



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