William Anderson
Tropical diseases are diseases that are prevalent in or unique to tropical and subtropical regions. The diseases are less prevalent in temperate climates, due partially to the occurrence of a chilly season, which controls the insect population by forcing hibernation.However, many were present in northern Europe and northern America within the 17th and 18th centuries before modern understanding of disease causation. The initial impetus for medicine was to guard the health of colonial settlers, notably in India under British Raj. Insects like mosquitoes and flies are far and away the foremost common disease carrier, or vector. These insects may carry a parasite, bacterium or virus that's infectious to humans and animals. most frequently disease is transmitted by an insect "bite", which causes transmission of the infective agent through subcutaneous blood exchange. Vaccines aren't available for many of the diseases listed here, and lots of don't have cures. Human exploration of tropical rainforests, deforestation, rising immigration and increased international aviation and other tourism to tropical regions has led to an increased incidence of such diseases to non¬tropical countries
