When mosquito bites make you sick

Malaria is a life-threatening disease caused by tiny parasites, transmitted to humans through the bite of infected female Anopheles mosquitoes.

Materials to download, in English and Welsh:

➡️ Story Time: Malaria and Artemisinin

Malaria remains a major global health issue, especially in tropical and subtropical regions, affecting millions annually. There are several species of malaria parasites, with Plasmodium falciparum being the most dangerous due to its severity and potential for rapid progression.

Symptoms typically appear 10–15 days after the mosquito bite and include high fever, chills, sweating, headache, nausea, vomiting and muscle pain.

If untreated, malaria can lead to serious complications like anaemia, cerebral malaria and even death, especially in children and pregnant women.

Malaria is diagnosed through blood tests, and treatment depends on the parasite species and the severity of the infection. So-called prophylactic drugs can protect people travelling to areas where malaria exist. The first ever malaria vaccine is currently being rolled out in Africa.

Mosquitoes are critical for malaria transmission. They carry the parasite from infected individuals to others, making vector control—like using insecticide-treated nets, indoor spraying and eliminating standing waters where mosquitoes breed—essential for prevention.

Controlling mosquito populations remains one of the most effective strategies in the global fight against malaria.