Worldwide, the<unk>  meninigtis epidemics affects more than 400 million people living in the 26 countries of the extended "African<unk>  belt" (from Senegal to Ethiopia). However, from 2010 to 2014 cases have been steadily decreasing, with approximately 24 000 cases in 2010 to 11 500 cases in 2014. The annual incidence of<unk><unk>  is 4,100 cases and 500 deaths between the year 2003-2007 in USA. The frequency of different causative agents causing<unk><unk>  varies with different age groups.The incidence of Hemophilius  influenza<unk>  is higher in children younger than 5 years of age, rate estimated to be 31 cases per 100,000. The incidence of Streptococcus pneumoniae in very young and very old individuals is estimated to be 17 cases per 100,000 making it the most common cause of<unk>  in this age group.
Bacterial meningitis epidemiology and demographics
Fungal meningitis epidemiology and demographics
Neoplastic meningitis epidemiology and demographics
Viral encephalitis Epidemiology and Demographics
Japanese encephalitis epidemiology and demographics
St. Louis encephalitis epidemiology and demographics
Meningococcemia epidemiology and demographics
Hantavirus infection epidemiology and demographics