Vaccination Flashcards
Vaccination
.Vaccination involves introducing small quantities of dead or inactive forms of a pathogen into the body
.Because the pathogen is dead or inactive, it cannot lead to the disease in the patient
.The white blood cells are now stimulated to produce antibodies against the dead or inactive pathogen
.At the same time the WBC divides by mitosis, these copies of the WPC can stay in the blood for decades
.If the same pathogen now enters the body, WBC can produce antibodies quickly preventing infection
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Herd Immunity
It is important that a large number of people are vaccinated against pathogens
There are always people who do not get vaccinated
If enough people are vaccinated, this protects unvaccinated people as the unvaccinated people cannot catch the disease because no - one around them can pass the pathogen on
This is called herd immunity
