Blood cell infected with malaria parasite

Malaria is caused by the single-celled parasite Plasmodium. It is transmitted from one person to another by certain species of blood sucking mosquito. The parasite spends part of its complex life cycle inside red blood cells.

More about microbes

STI Quiz and Tutorial

Sexually transmitted infections (STIs) are caused by pathogenic microbes that are transmitted from one person to another by sexual intercourse.

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