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.

Evidence is mounting that the mosquito-borne infection is circulating in the Los Angeles area for the first time.

The County of San Diego is investigating the first ever case of locally acquired dengue. The Escondido resident who became sick with dengue did not travel to

Public health officials continue to emphasize protection against mosquitoes and enhanced surveillance in affected neighborhoods.

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

In this week's Medical Roundup, Dr. Michael Daignault talks about the locally acquired dengue cases seen in LA County as well as new CPR guidelines.