Acute Communicable Disease Control


Contact Information
County of Los Angeles
Department of Public Health
Acute Communicable Disease Control
313 N. Figueroa Street, #212
Los Angeles, CA 90012
Phone: (213) 240-7941
Fax: (213) 482-4856
Email:acdc2@ph.lacounty.gov
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Acute Communicable Disease Control
Shigellosis

Shigellosis is caused by a Gram-negative bacillus with 4 main serogroups: Shigella dysenteriae (group A), S. flexneri (group B), S. boydii (group C) and S. sonnei (group D). Incubation period is 1-3 days. Transmission occurs when individuals fail to thoroughly wash their hands after defecation and spread infective particles to others, either directly by physical contact, including sexual behaviors, or indirectly by contaminating food. Infection may occur with ingestion of as few as 10 organisms. Common symptoms include diarrhea, fever, nausea, vomiting, and tenesmus. Stool may contain blood or mucous. In general, the elderly, the immunocompromised, and the malnourished are more susceptible to severe disease outcomes. 


Additional Resources
Shigella Infections among Gay & Bisexual Men

Note: Content contains mature language

Gay, bisexual and other men who have sex with men (MSM) are at risk for Shigella infections.

CDC: General Information

Print-and-Go Fact Sheet



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