How Do Vaccinations Work In The Body?

How Do Vaccinations Work In The Body? The immune system allows us to face and defeat different diseases caused by microorganisms such as viruses and bacteria. Without it, any infection would end up damaging vital organs and leading to death.

When a virus infects us, the immune system detects its presence and generates two types of response: on the one hand, it produces proteins called antibodies that bind to the proteins of the virus to neutralize it and thus prevent it from infecting new cells.

And on the other, it stimulates so-called cytotoxic cells, which have the ability to recognize cells infected by the virus and kill them before they can release more virus into the body.

Advances in biological research have made it possible in many cases to identify the proteins that allow the virus to infect and multiply in people.

Thus, when a person receives the vaccine, the immune system recognizes this viral protein as a foreign agent and produces a specific antibody and cytotoxic cell response against the protein.

If a vaccinated person becomes infected later, before the virus can multiply to a high level to cause clinical disease, the antibodies and cytotoxic cells generated by the vaccine bind to the virus protein, blocking infection and preventing clinical disease.

Listen to the content of the video to learn more about this topic.





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