Flea-borne typhus outbreak in Pico-Union prompts warning from LA County health officialsLos Angeles County health officials reported a localized outbreak of flea-borne typhus in the Pico-Union neighborhood, where five people have become ill this year. Los Angeles County health officials reported a localized outbreak of flea-borne typhus in the Pico-Union neighborhood, where five people have become ill this year. Los Angeles County health officials reported a localized outbreak of flea-borne typhus in the Pico-Union neighborhood, where five people have become ill this year. Los Angeles County health officials reported a localized outbreak of flea-borne typhus in the Pico-Union neighborhood, where five people have become ill this year. PICO-UNION, LOS ANGELES (CNS) -- Los Angeles County health officials Wednesday reported a localized outbreak of flea-borne typhus in the Pico-Union neighborhood, where five people have become ill this year.