The Department of Health is investigating a cluster of invasive meningococcal disease among men who have sex with men. The disease is a severe bacterial infection. The bacteria is spread by prolonged close contact with nose or throat discharge from an infected person. Household members and intimate partners to invasive meningococcal cases are at the highest risk. Although most people exposed to the bacteria do not become seriously ill, some may develop fever, headache, vomiting, stiff neck and rash. The symptoms may occur 2 to 10 days after exposure, but usually within 5 days. If you are concerned that you are at risk or may have been exposed to someone with meningitis, please contact your doctor. If you have any of the symptoms, please seek medical care immediately.