Officials said almost all dengue infections detected in the county previously were from those who traveled to countries where dengue is commonly spread, such as Colombia, Cuba, El

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

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

The illness appeared in an Escondido resident who had not recently traveled anywhere that the mosquito-borne illness is common. The arrival of dengue in San Diego County does not come as a surprise,

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

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.

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.