Los Angeles County health officials say that the case was reported in a resident of El Monte and that there is no known relation between them and the other four patients.

Reports of locally-acquired dengue fever are rising in Los Angeles County, with health officials confirming a fifth case on Wednesday.

Symptoms of dengue often mirror those of other viruses, and health officials urged healthcare providers to be vigilant.

A Panorama City resident has been confirmed with a rare locally acquired case of the mosquito-borne illness dengue, making him the fourth person in the county with the virus this year, public health officials said Wednesday.