The county Health Department has issued a warning to San Gabriel Valley residents to take preventive measures against a flu-like disease spread by rodents and other animals.
Twenty-seven cases of murine typhus, which is not contagious, have been reported in Los Angeles County since 1985, said Frank Hall, chief of the county's Vector-Borne Disease Program. One case was reported in Pasadena last year and two cases were reported in Monrovia in 1989, Hall said.
People bitten by infected fleas will develop flu-like symptoms, such as fever, headache, muscle ache and rashes. The report said the disease is typically spread by fleas from rats, but county health officials found that infected fleas from opossums and pets also carry the disease.
The report, released by County Supervisor Pete Schabarum, urged residents to trim ivy, grass and weeds, to seal openings in attics and pet doors, and to repair vent screens.