Herd Immunity and Vaccinations
Herd immunity occurs when a significant portion of a population becomes immune to an infectious disease, limiting disease spread. When there are limits on the spread of the disease, even those not already immune have a reduced risk of exposure. Reducing the risk of disease spread is especially critical in protecting individuals who can’t be vaccinated. These would include newborns, those with compromised immune systems, and those who cannot tolerate the vaccine.