Question

Ameobiasis occurs in abundance in tropical regions because

• A. Tropics have large housefly populations.
• B. Tropics have several species of mosquitoes in large numbers.
• C. The temperature in summer in the tropics is high.
• D. Many more species of birds occur in tropics than in temperate regions.

Answer 1

Answer: (A)

Tropics have large housefly populations.

Amoebiasis is a parasitic infection of the intestines caused by Entamoeba histolytica. It is common in tropical areas of the world where sanitation is poor, allowing food and water supplies to be exposed to fecal contamination. It is because of the presence of more mosquitoes in these areas.
Persons at greatest risk for amebiasis include:

• People who have travelled to tropical locations with poor sanitation.
• Immigrants from tropical countries with poor sanitary conditions.
• People who live in institutions with poor sanitary conditions.
• Men who have sex with other men.
• People with compromised immune systems and other health conditions.