What is the leading parasitic disease in the world?

• A. Malaria
• B. Chagas disease
• C. Schistosomiasis
• D. Amoebiasis

Answer: (A)

Malaria stands out because it carries the greatest global burden among parasitic diseases, driven by wide transmission in tropical regions and a high mortality, especially among young children in sub-Saharan Africa. The parasite Plasmodium is transmitted by Anopheles mosquitoes and travels through a liver stage before invading red blood cells, causing recurrent fever, anemia, and potentially severe complications. Despite ongoing control efforts, drug and insecticide resistance, plus socioeconomic and environmental factors, keep malaria as the leading parasitic disease in terms of deaths and overall disease impact. Other parasitic diseases may affect many people or be regionally prevalent, but they do not reach the same global death toll and burden as malaria.