Chapter no. 7: How the different types of vaccines work
According to the CDC, right now, we have three main types of vaccines, namely mRNA vaccines, protein subunit vaccines, and vector vaccines. Let’s have a look at each one.
mRNA vaccines—such as those from Pfizer and Moderna—pack material from the virus that gives our cells ‘information’ about the development of a harmless protein that is unique to the virus. After the body’s cells make enough copies of the protein, they attack and destroy the vaccine’s genetic material.
Protein subunit vaccines contain harmless pieces (proteins) of the virus, not the entire germ. After vaccination, the person’s immune system recognizes that those proteins don’t belong in there and begins producing T-lymphocytes and antibodies.
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