An outbreak of serogroup C (ST-11) meningococcal disease in Tijuana, Mexico.

Background: Invasive meningococcal disease (IMD) has been reported to be endemic in children from Tijuana, Mexico and the risk of an outbreak was always a threat.

Objectives: To describe all clinical, epidemiological and microbiological features of a meningococcal outbreak that occurred in Tijuana, Mexico.

Methods: All cases with IMD were admitted at different emergency departments within the city and diagnosed by culture and agglutination tests.