Chicago health officials have issued a public health alert following a rise in meningococcal disease cases, including two fatalities, urging residents to recognize symptoms and seek prompt medical attention.
Chicago health officials are sounding an urgent alert as they report a rise in cases of meningococcal disease among adults in the city. Since mid-January, seven cases of Neisseria meningitidis infections have been confirmed, resulting in two deaths, according to the Chicago Department of Public Health.
In response to the outbreak, health officials have traced close contacts of all confirmed cases and provided preventive antibiotics to individuals who may have been exposed to the bacteria.
Meningococcal disease is caused by the bacterium Neisseria meningitidis, which can infect the bloodstream or the protective lining of the brain and spinal cord. The bacteria are transmitted through saliva and mucus during close or prolonged contact, such as sharing drinks, kissing, or being in close proximity to someone who coughs or sneezes.
While cases of meningococcal disease are relatively rare, they remain a significant public health concern across the United States. The Centers for Disease Control and Prevention (CDC) reported 503 confirmed and probable cases in the U.S. in 2024, based on preliminary data.
Symptoms of meningococcal disease can manifest as fever, headache, nausea, vomiting, diarrhea, sensitivity to light, a stiff neck, and a skin rash that may appear as dark spots or bruising. Additional signs may include confusion, irritability, difficulty walking, joint or muscle pain, and loss of appetite.
According to the Chicago Department of Public Health, the city typically sees between 10 to 15 meningococcal infections each year, with cases often concentrated during the winter months. The disease primarily affects seniors, adolescents, and young adults.
To mitigate the risk of infection, health officials recommend that individuals receive the meningococcal vaccine starting at ages 11 or 12, with a booster dose administered at age 16.
Treatment for meningococcal disease involves antibiotics, and healthcare providers often initiate immediate treatment if the illness is suspected, as it can progress rapidly. In severe cases, patients may require additional treatments such as intravenous fluids, oxygen, blood pressure medications, or surgery to address damaged tissue.
Anyone experiencing symptoms or who believes they may have been exposed to meningococcal disease is strongly urged to seek medical care without delay. Health experts emphasize that early treatment is critical for improving outcomes.
For further information on meningococcal disease and its symptoms, residents can consult resources from the Cleveland Clinic and the Chicago Department of Public Health.
According to Chicago Department of Public Health, the community’s awareness and prompt action are essential in combating this serious health threat.

