Health officials in the US have warned doctors to be careful about dengue cases as the number of the mosquito borne disease has broken calendar-year records. Dengue remains less common in the continental United States, but in the 50 states so far this year there have been three times more cases than at the same point last year. Most were infections that travelers got abroad, and officials note there is no evidence of a current outbreak. But they also warn that local mosquitos pose a threat, AP reported.
Dengue is spreading across the globe
