COVID vaccine second dose timing: Why is it important?
Vaccines are one of the most important, if not, the most important medical achievement in modern history. This is because vaccines have allowed us to not only stop the spread of disease, but even eradicate some of them completely. More recently, vaccines offer one of the best solutions to halting the spread of COVID-19.
Vaccines do this by improving our immunity against certain diseases. Under normal circumstances, exposure to disease gives us immunity2. For example, if we get sick with chickenpox as a child, our body develops immunity to that disease. This means that we already have antibodies that are specifically “trained” to fight chickenpox.
Vaccines work similarly by triggering an immune response within our body. As the immune response gets triggered, our immune systems “learn” how to defend the body from that specific illness. However, the benefit of vaccines is that we don’t need to get “sick” or expose ourselves to disease in order to gain immunity.
Why do you need the COVID vaccine second dose?
As effective as vaccines are, there are situations where a single dose is not enough. This is the case when it comes to the COVID-19 vaccine. The first dose is enough to trigger an immune response, but as far as effectiveness is concerned, a single dose is not enough.