Meningitis is an inflammation of the lining of the brain and spinal cord. Meningitis is most commonly caused by a virus or bacteria.
Viral meningitis may be caused by a wide variety of viruses. Antibiotics have no effect. People with viral meningitis almost always recover without treatment.
Bacterial meningitis is a serious bacterial infection. It has the potential to cause long term complications, such as deafness or brain injury. It can also cause death. Bacterial meningitis requires immediate treatment with antibiotics. The two most common types of bacterial meningitis are meningococcal and pneumococcal.