Who are the groups at highest risk of contracting meningococcal disease?

Anyone can contract meningococcal disease, a serious condition caused by the bacterium Neisseria meningitidis, which can sometimes be fatal [1]. However, certain groups are at a higher risk of developing this disease.

Age groups at higher risk

Some age groups are more susceptible to meningococcal disease:

• Children younger than one year: Infants and young children are at higher risk due to their developing immune systems [1].
• Adolescents and young adults: The 16 to 23 age group is also considered one of the groups at higher risk [1].
• Older adults: People aged 65 and older are also at higher risk for the disease [1].

Individuals with specific health conditions

Certain medical conditions and medications can increase the risk of meningococcal disease:

• Weakened immune system: People with medical conditions that compromise the immune system, including those with HIV or certain rare immune system disorders [1].
• Spleen issues: People who do not have a spleen or whose spleen does not function properly [1].
• Complement inhibitors: People taking complement inhibitor medications, which are immunotherapeutic drugs given for certain rare conditions [1].

Environmental and lifestyle factors

Certain environmental conditions and lifestyles can increase the risk of transmission:

• Living in crowded settings: Such as college dormitories or military barracks, where bacteria can easily spread from person to person via saliva or respiratory secretions [1].
• Travel to endemic areas: People traveling to regions where the disease is more prevalent, such as certain parts of sub-Saharan Africa [1].
• Close contact with an infected person: Living with someone who has the disease or direct contact with their saliva, such as through kissing [1].

Importance of early diagnosis and prevention

Given the severity of meningococcal disease, early diagnosis and immediate antibiotic treatment are crucial [3]. If a healthcare provider suspects you or your child has meningococcal disease, they will order tests to collect blood and/or cerebrospinal fluid (fluid near the spinal cord) samples for bacterial culture tests to identify the specific bacteria causing the infection [1] [2].

The best way to prevent meningococcal disease is by getting the recommended vaccines [3]. Vaccination is recommended for all preteens and adolescents, as well as children and adults at increased risk of the disease [3]. For more information on prevention and early diagnosis, you can visit Meningococcal Meningitis: Vaccination Prevention and the Importance of Early Diagnosis (Arabic).

If any symptoms of meningococcal disease appear, such as fever, severe headache, stiff neck, nausea and vomiting, or a dark purple rash (in later stages), you must seek immediate medical attention [1]. These symptoms can be dangerous and require urgent medical intervention.

Medical references

• Meningococcal Disease
• Bacteria Culture Test
• About Meningococcal Disease