The Food and Drug Administration clarified the stages of work of vaccines and the duration of time that the body needs to acquire the necessary immunity.
The stages of its work begin by injecting the microbe into the human body in a weak or dead form, so that the immune system begins to treat it as foreign bodies.
immune system contributes to preparing the response through antibodies, which enable the body to deal with the real microbe if it is infected in the future.
The authority confirmed that the body may need more than one dose to make enough antibodies to fight the disease, and the immune system usually needs 2-3 weeks to complete the process.
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