The meningococcal vaccine protects you from four types of bacteria that cause meningococcal disease. This illness can cause meningitis, an infection of the lining around the brain or spinal cord. It can also cause a blood infection (meningococcal bacteremia), pneumonia, and other problems. Ten percent to 15% of people who are infected with the disease die from it, even if they were treated with antibiotics. As many as 20% of those who survive may have lasting problems such as hearing loss, brain damage, seizures, or loss of limbs.
Because this illness is serious, it's important you get vaccinated if you are at risk.
You can catch meningococcal infection through close contact with someone who has the bacteria in his or her throat or nose. Early symptoms of both meningitis and blood infection can be confused with the flu or a cold, but symptoms can rapidly become more severe and may include:
Which adults should receive the meningococcal vaccine?
The CDC recommends you get the vaccine if you are an adult and:
- Are living in a dorm as a first-year college student
- Work with meningococcal bacteria in a lab
- Are in the military
- Are traveling to or living in a country where meningococcal disease is common, such as in certain parts of Africa
- Have a damaged spleen, or it's been removed
- Have an immune system disorder called terminal complement deficiency
- Are taking eculizumab (Soliris)
- May have been exposed to meningitis during an outbreak
- Have HIV
Are there any adults who should not get the meningococcal vaccine?
You shouldn't get either type of meningococcal vaccine if you:
- Are moderately or seriously ill; wait until you recover.
- Have had a serious allergic reaction (called anaphylaxis) to a previous dose
- Had a severe reaction to any part of the vaccine
How and when should you receive the meningococcal vaccine?
In most cases, adults only need one dose. But if you remain at risk, you may need a booster.
Some adults may need another type of meningitis vaccine, the serogroup B meningococcal vaccine, if they are exposed to this virus through work or travel or if they have a damaged or missing spleen, or certain immune system disorders.
Are there any dangers or side effects associated with the meningococcal vaccine?
The vaccine can’t cause meningococcal disease.
If you have a reaction to the meningococcal shot, it will most likely be mild. Side effects may include:
- Mild pain and redness at the injection site
- Slight fever
In rare cases, a meningococcal vaccine may cause a severe allergic reaction. Signs of this include:
- Hoarseness, wheezing, trouble breathing, or swallowing
- Hives, itching, skin warmth, or redness
- Stomach cramps, diarrhea, or vomiting
- Anxiety or headache
- Weakness, dizziness, lightheadedness, or loss of consciousness
If you have any signs of a severe reaction:
- Call 911 or go to the emergency room immediately.
- Describe when you had the vaccine and what happened.
- Have a health care professional report the reaction.