As today is Rare Disease Day, we're breaking down the types and causes of meningitis. ⬇️ There are many different viruses, bacteria and fungi that can cause meningitis. In the UK, viruses and bacteria are the most common causes. Viral meningitis is the most common type of the disease, and for some can cause life-changing after-effects. Many different bacteria can cause meningitis. The most common cause in the UK is meningococcal bacteria. Bacterial meningitis needs rapid admission to hospital an