I keep hearing people say that the COVID vaccine should prevent the disease. Words mean something. Prevent means what? Symptoms, carrier status, or just what.
Vaccines work by activating the adaptive immune system, B cells and antibodies and some T cells. One can still get infected and be a carrier after being vaccinated. Vaccines create antibodies that fight the disease when infected. Depending on your immune system you may get sick or not. You are still infected. Vaccines do NOT prevent infection. They mediate it when infected.
Given our grossly incompetent educational system we seem top spend more time on one's sexual proclivities than on basic biological facts. Pity.
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