Question

What is the relationship between vaccination rates and disease rates? And How did vaccination become a widespread practice?

Answer 1

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VACCINE ----- It is stimulation of immune system against infections as same as when natural infection attack , without causing any illness. It is highly stable, provide long term protection, safe and inexpensive. The term introduce by Edward Jenner.

Their is directly proportional relationship between the disease rate and vaccination rate. If their is more contagious disease to get spread at a time , than more vaccinations is required for people to get vaccinated to prevent further spread of disease. For example in case of small pox, measles, diptheria, poliomyelitis, and now a days for corona virus .

Increase in wide coverage of vaccine led to rapid decrease in rate of disease.

when Vaccine is injected in form of killed or weakened pathogen than it get recognized by our immune system , than B and T cells both becomes active and produce antibodies against it and destroy antigen, from this memory B and T cells get form to fight form future infections.

Vaccinations is responsible for WIDESPREAD elimination of polio, small pox, measles, tetnus, diptheria, etc. When large population is vaccinated than they develop HERD IMMUNITY which provides community protection to prevent transmission of disease from one individual to other and also protect those people who are not able to get vaccines like in cancer patients .It has no side effects, inexpensive, effective for all age groups.

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