Dangerous mosquito-borne virus surges in popular US state as cases reach highest levels in decades

Florida health officials have confirmed 485 locally acquired cases of dengue fever this year, as the state grapples with its largest outbreak in decades.

Between Oct. 18 and Oct. 24, state surveillance logged 60 new infections, with the Tampa Bay area accounting for roughly 95% of all locally acquired cases recorded statewide, according to the Florida Department of Health.

The surge prompted emergency declarations in Hillsborough, Pasco and Pinellas counties in late September, allowing...