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What is meningitis?
Meningitis is a serious infection of the coverings of the brain and spinal cord caused by many types of germs, including viruses, bacteria, and fungi.
Meningitis caused by fungi is rare, seen mostly in people who have problems with their immune system, for example with cancer or HIV/AIDS.
Viral meningitis may occur along with a viral infection elsewhere in the body, such as gastroenteritis, chickenpox (varicella), or mumps. Viral meningitis can occur at any age, but is most common in children. The condition usually disappears on its own without any long-lasting complications.
Bacterial meningitis, on the other hand, is a life-threatening condition that requires emergency treatment and hospitalization.
Many different bacteria can cause meningitis. In newborns, the most common causes are Group B Streptococcus (GBS) and Escherichia coli. In children over 2 months of age, Streptococcus pneumoniae (pneumococcus) and Neisseria meningitidis (meningococcus) are responsible for most cases of meningitis.
Before vaccination was introduced, Hemophilus influenzae type b (Hib) was a dreaded cause of meningitis in children that often resulted in severe complications. Today, with routine vaccinations, Hib is a rare cause of meningitis.
The time from infection to symptoms (incubation period) varies from a few days to few weeks, depending on which bacteria have caused the infection. These germs are spread through droplets from an infected person sneezing or coughing; but infection can also occur through direct contact with an infected person or feces, depending on which germ.



