Chapter no. 1: The purpose of a COVID-19 vaccine is to prepare your immune system for battle
In order to understand how COVID vaccines work, first, you should take a closer look at how your body fights illness. According to the CDC, when infected respiratory droplets enter your body, their duty is to attack and multiply.
Basically, this invasion, a.k.a. the infection, is what leads to illness. Luckily, we have our own knight in shining armor that usually saves the day, namely the immune system. To fight infection, the immune system uses several weapons such as red cells, which carry oxygen to the body’s organs and tissues, and while cells, the ones that go into battle.
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