In March
2020 Pfizer, an American multinational Pharmaceutical Corporation collaborated
with Biotech i.e. a German Biotechnology company to develop COVID-19 vaccine.
Coronavirus has jolted the world by affecting millions. Millions of people have
been killed. Many vaccines were in progress of making as they were undergoing
several trials. Pfizer’s COVID-19 vaccine is yet to be approved by the FDA (Food and Drug Administration). But
today FDA has made very important news public that Pfizer’s COVID-19 vaccine
is safe and effective. As it causes minor symptoms of pain, redness, and
swelling in the area of injection. Also, headache and muscle pain are symptoms which
are later felt. According to BBC “US regulators have confirmed
the Pfizer/BioNTech COVID vaccine is 95%
effective, paving the way for it to be approved for emergency use.” A UK
grandmother has become the first person in the world to be given the Pfizer
Covid-19 jab as part of a mass vaccination programme. Margaret
Keenan, who turns 91 next week, said it was the “best early birthday
present”
The mechanism of action of vaccine is that
it is mRNA based vaccine and when it is injected into the body proteins known as
spike proteins are produced from mRNA by the cell. They are broken down by the
cell and released and then antigen-presenting cells uptake them and present
them to helper T cells. Helper T cells stimulate other cells and B-cells. B-cells
when simulated produce antibodies against the spike proteins. In this way, immunity is developed by the body against the disease (Coronavirus). In the healthcare industry, this is great development and news and hopefully COVID
pandemic will end soon!
mskhealth 