The County is investigating the first ever case of locally acquired dengue. The Escondido resident who became sick with dengue did not travel to an area where the mosquito transmitted illness is common.

To prevent the disease from spreading, County Vector Control began spraying this weekend for mosquitoes at about 170 homes in Escondido.

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

Los Angeles County reported five cases of locally contracted dengue this year, and Long Beach and Pasadena each had their first cases of locally acquired dengue in late 2023.

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.