Flooding, droughts, and rising temperatures are helping mosquito-borne illnesses spread in places they haven’t before, leading to a rise in cases in Florida, a regional director for the World Health Organization said Tuesday. This year, countries have reported record-breaking numbers of dengue cases, said Jarbas Barbosa, director of the Pan America Health Organization (PAHO), in a virtual press conference. “The geographical area susceptible to the transmission of dengue is expanding in countries such as Argentina and Uruguay and countries that are not usually affected, which includes the United States, where most cases have been imported by travelers,” Barbosa said.