Here you go.
Bacterial Meningitis
At least 50 kinds of bacteria can cause meningitis, but the main types are:
Meningococcal
Meningococcal infection causes most cases of bacterial meningitis in the UK and Ireland. Meningitis and septicaemia have different sets of symptoms, but most people who are infected have symptoms of both. When septicaemia occurs without meningitis it is more life-threatening.
Pneumococcal
Pneumococcal bacteria are the second biggest cause of bacterial meningitis in the UK and Ireland, and in some countries it is the main type of meningitis. The bacteria are quite commonly carried, and are more likely to cause earache, pneumonia and less serious illnesses than meningitis.
Most cases of pneumococcal meningitis are in children under two years old and adults with specific problems (head injuries, diseases of the blood or circulation, or immune deficiency).
Haemophilus influenzae b (Hib)
This used to be the most common type of meningitis in children under 5 in many countries. Since the introduction of the Hib vaccine in 1992, cases have dropped by over 90%. Hib meningitis is now rare in countries that use the vaccine, but is still a major problem in countries that do not.
Group B Streptococcal (GBS)
This is the main cause of meningitis in newborn babies. GBS bacteria can cause septicaemia, meningitis and pneumonia. Up to 90% of babies who get this disease survive and a recent study found that half of those who recovered from GBS disease had no significant after effects. GBS bacteria are carried by at least 30% of people and are usually harmless.
E coli
Certain strains of these bacteria can cause meningitis, especially in newborn babies, and people of any age who have particular health problems. It is a much more important cause of meningitis in developing countries.
Listeria
This is an uncommon cause of meningitis, occurring mainly in babies, elderly people and those with weakened immune systems. There are fewer cases now than in previous years due to increased awareness of foods that can cause listeriosis in pregnant women and people with certain conditions that increase their risk to infections.
Tubercular (TB)
This is a rare form of meningitis due to the tuberculosis bacteria. Most patients who have got TB meningitis have tuberculosis of the lungs or elsewhere. This type of meningitis does not come on suddenly like typical bacterial meningitis. TB meningitis develops slowly, and this makes diagnosis more difficult.
Viral Meningitis
This type of meningitis is usually relatively mild, with symptoms of headache, fever and general ill feeling, although some serious features of meningitis may occur. Since people with viral meningitis often recover without medical treatment, it is difficult to be certain how common it actually is, but it is probably more common than bacterial meningitis.
Fungal Meningitis
Fungal meningitis is quite rare. It mainly affects people with immune deficiencies.