A virus similar to dengue fever is popping up in Pakistan, but experts aren’t sure of what it is.
Dengue fever reduces blood platelets and white blood cells. Patients are being tested for both dengue and malaria but the tests are coming back negative.
On Friday there were 45 newly reported cases of dengue fever in Islamabad, Pakistan.
There have been 4,292 mosquito-borne viral disease cases so far this season.
Dengue is passed on through mosquito bites and can be common where the climate is warm, tropical, and wet.
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