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Meningitis is an infection of the membranes that surround the brain and spinal cord. Both viruses and bacteria cause meningitis. Bacterial meningitis can be life-threatening; viral meningitis seldom is. Learn more about bacterial meningitis through this quiz.
1. Bacterial meningitis is caused by only one kind of bacteria.
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It can be caused by several different kinds of bacteria. Some of the more common bacteria that cause meningitis are H. influenzae, S. pneumoniae, and N. meningitidis.
2. Symptoms of bacterial meningitis can develop quickly.
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The symptoms in adults and children can appear suddenly and include high fever, severe headache, stiff neck, discomfort with bright light, nausea, and vomiting. The symptoms in newborns may be subtle and include fever, lethargy, poor feeding, problems breathing, irritability, and vomiting. As the disease progresses, the person may have seizures.
3. A person with symptoms or signs of bacterial meningitis should seek immediate emergency medical treatment.
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Even if treated, some types of bacterial meningitis can lead to brain damage, hearing loss, or learning disability. Because the initial symptoms of bacterial meningitis and the much milder viral meningitis are so similar, you can't diagnose yourself. It's important to see your health care provider immediately.
4. Some types of bacterial meningitis can be prevented.
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The Hib, or Haemophilus influenzae type b, vaccine has reduced the number of cases of meningitis caused by this bacterium. Today, the leading causes of bacterial meningitis are S. pneumoniae and N. meningitidis. A vaccine is available for S. pneumoniae; it's recommended for people over age 65, people with a chronic illness such as diabetes or heart disease, and people who have a weakened immune system or who are HIV-positive. A vaccine for N. meningitidis, which causes meningococcal meningitis, is recommended for children ages 11 and 12, teenagers, and college freshman, as well as anyone between ages 2 and 55 who is at increased risk for contracting the disease.
5. College campuses are areas where bacterial meningitis can spread quickly.
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Some forms of bacterial meningitis are mildly contagious and can be spread through coughing or kissing. The majority of cases occur in children, but the incidence among teens and young adults 15 to 24 years old is increasing. Meningococcal meningitis, a form of meningitis caused by N. meningitidis, can spread easily wherever a large number of people live, such as among college students in dormitories. The CDC now recommends that children ages 11 and 12, teens, and college freshmen who live in dorms be vaccinated against this particular form of meningitis.
6. Older adults are more susceptible to pneumococcal diseases, including meningitis and pneumonia.
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Because of this, the CDC recommends that adults 65 and older get a vaccine against S. pneumoniae, which causes pneumococcal meningitis.
7. Most people who are diagnosed early with bacterial meningitis and treated promptly will recover fully.
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In some cases, however, the bacterial infection can progress so quickly that the person dies within 48 hours, even with treatment. The bacteria that cause meningitis are becoming resistant to many of the antibiotics that were once used to treat it. Newer, more expensive drugs must now be used.
8. A doctor confirms a diagnosis of bacterial meningitis with a spinal tap.
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A doctor uses a physical exam and medical history to diagnose meningitis, and then confirms the diagnosis through a sample of spinal fluid, obtained through a spinal tap. The results of the spinal tap can also help the doctor determine whether the meningitis is caused by a bacteria or virus and which antibiotic is the most effective if it is a bacterial meningitis. Antibiotics do not affect the viral form of meningitis, usually a much milder disease that clears up within 10 days.
