Meningitis is an inflammation of the membranes covering the brain or the spinal cord, which can have different causes.
The inflammation is usually caused by a bacterial infection, e. g. with meningococci or Haemophilus influenzae
. Viral infections can lead to tick borne encephalitis. And even fungi or plants can cause meningitis. Symptoms of the disease are typically headache and a stiff neck. Without treatment, meningitis may be fatal. Vaccination can protect against most of the causes.