How do vaccines help strengthen the immune system and prevent diseases?
Vaccines play a crucial role in strengthening the immune system and preventing diseases. When a vaccine is administered, it contains a weakened or dead form of the disease-causing pathogen. This pathogen triggers the immune system to produce an immune response, which helps to build immunity against the disease.
When the immune system is exposed to the pathogen in the vaccine, it produces antibodies that recognize and destroy the pathogen. These antibodies remain in the body and provide immunity against the disease. The next time the body is exposed to the pathogen, the immune system can quickly produce the necessary antibodies to fight off the infection, preventing the person from getting sick or experiencing severe symptoms.
Vaccines also contribute to herd immunity, which is when a large portion of a community is vaccinated and becomes immune to a disease. This makes it more difficult for the disease to spread, which protects those who cannot receive vaccines due to medical reasons, such as individuals with weakened immune systems.
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