Meningitis is a condition that causes inflammation of the membranes and fluids that surround the spinal cord and brain. Each year, around one million people all across the world get affected by this disease. One of the most common causes of this condition is germs, which include parasites, fungi, bacteria, and viruses. There are five types of meningitis in all including— bacterial, viral, parasitic, fungal, and non-infectious, however, the following are the most common and are classified by the cause of the disease: 1. Bacterial meningitis Bacterial meningitis is a type of meningitis that develops rapidly in a few hours and can cause disability permanently, resulting in death. Around ten to twenty percent of the cases can be fatal which comprise almost seventy hundred thousand deaths all over the world. In most cases, the affected person may lose their ability to function due to the symptoms. Many of the cases are caused by Haemophilus influenzae type b, streptococcus pneumoniae, and Neisseria meningitidis. There are a lot of people who carry the disease-causing bacteria in the throat and their nose. Such bacteria can spread from one person to another via respiratory droplets. 2. Viral meningitis Viral meningitis is another common form of meningitis disease and is less severe in most of the cases.