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Question

What happens to the sporozoites which rupture from the blood cells releasing toxins? Does it continue to produce toxins and divide itself, causing harm to the person?

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Solution

Dear Student,

Sporozoites (malarial parasites) reproduce asexually in the liver cells and become merozoites.Then infected liver cells burst releasing, merozoites into the blood. Those merozoites infect red blood cells and reproduce asexually there.Infected red blood cells rupture and release the merozoites and the toxins that cause fever and chills. Haemozoin is a toxin responsible for the chill and high fever recurring every three to four days.

Released merozoites infect new blood cells. Some of the merozoites in red blood cells are able to form gametocytes (sexual stages). Female mosquito take up gametocytes with blood meal. Fertilisation occur in the intestine of mosquitoes.

Those merozoites which do not develop into gametocytes continue their asexual reproduction in red blood cells. They keep on infecting new red blood cells and toxin is produced whenever the infected blood cells burst, untill some treatment is given to treat malaria.


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