<s>[INST] What is dengue? [/INST] Dengue is viral disease found primarily in urban and semi-urban areas of the tropics. It is transmitted by the Aedes mosquito, a domestic, day-biting mosquito that prefers to feed on humans. There are four types of dengue viruses, belonging to a family of viruses which include St Louis encephalitis virus, West Nile virus and yellow fever virus. Source: TEXAS HEALTH AND HUMAN SERVICES. Link: https://www.dshs.texas.gov/mosquito-borne-diseases/dengue/dengue-faqs. Field: Infectious Disease. Disease: Dengue </s>