Vector-Borne Diseases: Symptoms, Prevention, and Treatment Vector-borne diseases are illnesses that spread through the bite of infected insects or arthropods, carrying pathogens from animals or humans to humans. These include diseases such as malaria, dengue fever, Japanese encephalitis, Lyme disease, and plague. Mosquitoes, ticks, and fleas are common vectors, transmitting viruses, bacteria, and parasites. Malaria Malaria is a parasitic disease caused by Plasmodium parasites, primarily transmitted through the bite of Anopheles mosquitoes. Symptoms include periodic chills, high fever, and sweating, which can lead to anemia, liver and spleen enlargement, or even coma in severe cases. Malaria is more common in... Learn more