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C. Efficacy and affordability
D. Efficacy and effectiveness
5) What was a significant barrier to providing EPI immunizations in low- and middle-income countries by 1990?
A. Limited financial resources
B. High demand for vaccines
C. Excessive healthcare infrastructure
D. Overwhelming public support
6) What is the primary benefit of herd immunity?
A. It ensures complete eradication of diseases.
B. It reduces vaccination costs.
C. It prevents the disease from spreading to the unvaccinated.
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D. It protects vaccinated individuals.
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7) How many deaths do vaccines save each year according to the essay?
A. One million
B. Three million
C. Ten million
D. Six million
8) What disease has been completely eliminated by vaccination?
A. Polio
B. Measles
C. Chickenpox
D. Smallpox
9) Which vaccination can prevent complications like bacterial pneumonia in infants?
A. DTaP vaccine
B. MMR vaccine
C. Polio vaccine
D. Influenza vaccine
10) What are conjugated vaccines known to improve?
A. Efficacy and immune memory
B. Cost-effectiveness
C. Availability
D. Vaccine safety
