Meningococcal Outbreak in Southern California

Since May 2016, nine confirmed cases of Meningococcal disease, including one death, have been reported in men living in Southern California, most of who were men who have sex with men (MSM). Six of the cases are known to be caused by serogroup C and one additional case is awaiting serogroup identification. This represents a substantial increase above the typical number of reported cases. Persons with HIV infection are known to be at risk of Meningococcal disease and vaccines are urged for adult gay and bisexual men at risk, and for all people with HIV. This advisory provides background information and Meningococcal vaccine recommendations to help clinicians safely address the current Meningococcal disease outbreak.

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