A vaccine for malaria is not available becaus | vedclass

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Question

(C) The development of a malaria vaccine is challenging because $Plasmodium$ is a protozoan parasite that undergoes complex life cycles in both humans

Vedclass · Accepted Answer

The host body does not produce antibodies against Plasmodium.

Vedclass · Answer

(C) The development of a malaria vaccine is challenging because $Plasmodium$ is a protozoan parasite that undergoes complex life cycles in both humans and mosquitoes. Specifically,$Plasmodium$ exhibits antigenic variation,meaning it frequently changes its surface proteins to evade the host's immune system. Furthermore,the parasite spends a significant portion of its life cycle inside host cells (like hepatocytes and erythrocytes),where it is shielded from circulating antibodies. Therefore,the host body fails to mount an effective,long-lasting immune response (antibody production) that can completely eliminate the parasite,making vaccine development difficult.

$A$ vaccine for malaria is not available because:

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