Which medical condition can be prevented via immunization?
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Answer: A. Measles
Explanation
Measles is a contagious viral disease that can be effectively prevented through widespread active immunization programs. Vaccines stimulate the immune system to produce protective antibodies without causing the actual illness. Immunization creates strong herd immunity protecting vulnerable populations from contracting measles. The measles virus spreads rapidly through respiratory droplets in the air from infected individuals. Active immunization uses weakened or inactivated viral antigens to train immune memory cells. Global public health campaigns rely on the MMR vaccine to eliminate measles outbreaks worldwide.
Public health policies mandate childhood vaccinations to maintain high community immunity thresholds. Preventing infectious diseases through immunization saves millions of lives globally every year. Declining vaccination rates can lead to dangerous resurgences of preventable viral infections. Cancer is a complex group of genetic diseases involving uncontrolled cell division not prevented by single vaccines. Diabetes is a metabolic disorder related to insulin production rather than a communicable viral infection. Heart attack is an acute cardiovascular event caused by blocked coronary arteries rather than infectious agents.
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