The global eradication effort led to significant reductions in cases worldwide. Which option reflects this outcome?

• A. Significant reductions in cases worldwide.
• B. No change in case numbers.
• C. An increase in polio cases.
• D. Eradication of all infectious diseases.

Answer: (A)

The main idea being tested is that the global polio eradication effort achieved a dramatic drop in polio case numbers worldwide. Since the Global Polio Eradication Initiative began, widespread vaccination campaigns, improved surveillance, and rapid outbreak responses have cut transmission dramatically. Polio cases declined from about 350,000 annually in the late 1980s to only a small fraction of that in subsequent decades, with only a few dozen to a few hundred cases reported in recent years. Therefore, the option describing significant reductions in cases worldwide accurately reflects the outcome. The other possibilities don’t fit because they either contradict the observed decline, claim an increase, or suggest complete eradication of all infectious diseases, which did not happen.