Causes Meningitis can be caused by almost any pathogen, including fungi. However, some pathogens are far more common than others. The common bacteria and viruses which cause meningitis are described later. Viral meningitis often affects older children and young adults. Mumps meningitis is seen less often now due to the widespread use of MMR vaccine.
Autumn is the usual season for enterovirus meningitis.
It is spread by the faecal-oral route. As most cases are caused by enteroviruses, advice about hand washing is always important. Patients should be advised to wash their hands after changing baby's nappies, after going to the toilet and before meals. Bacterial meningitis Bacterial meningitis is usually more serious that the viral form. However, it has almost been eliminated as a result of the immunisation campaign which started in 1992.