What is the most common mode of transmission for parasitic infections such as malaria?

What is the most common mode of transmission for parasitic infections such as malaria?

• A. Fecal-oral
• B. Blood transfusion
• C. Sexual contact
• D. Airborne

Answer: (A)

Malaria is transmitted by a bite from an infected Anopheles mosquito, a vector-borne route. The parasite spends part of its life in the mosquito and is passed to humans when the mosquito feeds, injecting sporozoites that travel to the liver and then invade red blood cells. This mode hinges on the presence of the mosquito vector and suitable environments for their lifecycles. Fecal-oral transmission, by contrast, is typical for many intestinal parasites acquired from contaminated food or water, not malaria. While blood transfusion or sexual contact can transmit certain parasites in specific situations, they are not the primary means for malaria, and airborne spread is not how malaria is transmitted. The key idea to remember is that malaria spreads through mosquito bites, not ingestion, contact, or inhalation.

Malaria is transmitted by a bite from an infected Anopheles mosquito, a vector-borne route. The parasite spends part of its life in the mosquito and is passed to humans when the mosquito feeds, injecting sporozoites that travel to the liver and then invade red blood cells. This mode hinges on the presence of the mosquito vector and suitable environments for their lifecycles. Fecal-oral transmission, by contrast, is typical for many intestinal parasites acquired from contaminated food or water, not malaria. While blood transfusion or sexual contact can transmit certain parasites in specific situations, they are not the primary means for malaria, and airborne spread is not how malaria is transmitted. The key idea to remember is that malaria spreads through mosquito bites, not ingestion, contact, or inhalation.