The Los Angeles area is seeing more cases of people with dengue fever without traveling outside the United States, a year after the first such case was reported in California.

Los Angeles health officials announced they are investigating a handful of locally acquired dengue fever cases in the city of Baldwin Park.

For the first time in California, health officials have reported a cluster of dengue fever cases that are not travel-related and warned residents to protect themselves from mosquito bites. Two more locally acquired cases of the mosquito-borne illness dengue have been detected in Baldwin Park residents,

Two more Baldwin Park residents have locally acquired dengue — an illness that mosquitoes transmit — in addition to one case announced last week, prompting health officials Wednesday to report […]

Health officials reported a single case of locally acquired dengue in Long Beach last year. Now, three such cases in Baldwin Park mark an unprecedented escalation.