Question

The population of Anopheles mosquito decreases in severe seasons then, what is the source of reappearance of malaria during warm and humid conditions?

• A. A few surviving malarial parasites in the blood of humans not suffering from malaria.
• B. Tertiary host like monkeys.
• C. A few merozoites of the malarial parasites in overwintering mosquitoes.
• D. Posterythrocytic schizogony due to reserved macrocrytomerozoites.

Answer 1

The correct option is D Posterythrocytic schizogony due to reserved macrocrytomerozoites.

Malaria is a disease is caused by a parasite called Plasmodium falciparum that is transmitted by Anopheles that thrive in regions with warm temperatures and high rainfall. While severe season helps to decrease the population of the mosquito, it has been seen that malaria reappears during warm and humid conditions. This is because the malaria parasites require warm climates to complete their growth cycle. When a mosquito bites a human being, hundreds of invasive sporozoites are introduced into the skin which then reaches the liver through a blood vessel which then negotiate through the liver sinusoids, migrate into a few hepatocytes, helping them to multiply and grow within parasitophorous vacuoles. Further, each of this sporozoite develops into a schizogony containing 10,000–30,000 merozoites.