Agence France-Presse: Incurable, mosquito-borne dengue disease could spread from subtropical areas into the United States through global warming, requiring greater efforts to combat it, health authorities said in commentary out Tuesday. "Widespread appearance of dengue in the continental United States is a real possibility," said National Institute of Allergy and Infectious Diseases director Anthony Fauci, in commentary published in Journal of the American Medical Association. Dengue …