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- Typhus (Flea-Borne) - California Department of Public Health
In California, flea-borne typhus is considered endemic (always present) in areas of Los Angeles and Orange counties, but sometimes cases are also reported from other parts of California A person can get typhus by coming in contact with fleas that are infected with the bacteria that cause typhus
- CDPH Vector-Borne Disease Section Annual Report 2024
In 2024, 246 human cases of flea-borne typhus, caused by Rickettsia typhi, were reported; 85% of the case-patients required hospitalization and two were fatal Typhus is considered endemic in parts of southern California
- Surveillance of Flea-Borne Typhus in California, 2011–2019
Flea-borne typhus cases by month, California, 2011–2019 The distribution of clinical and laboratory findings was similar for both classifications and thus were combined in Table 1 (demographics) and Table 2 (clinical and laboratory findings)
- Vector-Borne Disease Section - California Department of Public Health
VBDS conducts prevention, surveillance, and control of West Nile virus, Lyme disease, plague, hantavirus, and other vector-borne diseases throughout California VBDS staff, located in three regional offices and headquartered in Sacramento, provide the following services:
- Fleaborne Typhus Associated Deaths Los Angeles County, California, 2022
Fleaborne typhus cases in Los Angeles County (LAC), California increased from 31 in 2010 to 171 in 2022 In 2022, three associated deaths occurred among LAC adults with underlying medical conditions; severe manifestations included hemo-phagocytic lymphohistiocytosis, myocarditis, and septic shock
- Fleaborne Typhus–Associated Deaths - MVCAC
During June–October 2022, Los Angeles County Department of Public Health learned of three fleaborne typhus–associated deaths This report describes the clinical presentation, illness course, and methods used to diagnose fleaborne typhus in these three cases
- Human Flea-Borne Typhus Cases in California
Flea-borne typhus has not been detected to date in northern California
- Rickettsia typhi in Southern California: A Growing Flea-Borne Threat
The evidence suggesting flea-borne typhus is under-recognized in Southern California has broad implications Yes, flea-borne typhus has been described as mild, but patients infected with R typhi tend to disagree with this sentiment
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