The CNS Infection Censuses for 2011 and 2012 from 9 neurology training programs in 7 institutions in the Philippines were collated to determine the types of CNS infections seen in the country and their relative frequencies. A comparison with a similar survey done in 1999 was made. A total of 1629 cases of CNS infections were recorded. There were 23 categories. Bacterial meningitis (34.3%) and TB meningitis (30.7%) were the top two infections, constituting more than half of all CNS infections seen. When the adult and pediatric census were separated, TB meningitis came up to be the most common infection in adults (43%) with bacterial meningitis a poor second at 19.4%. The reverse is seen in the pediatric population – bacterial meningitis (41.7%) vs. TB meningitis (24.6%). Cryptococcal meningitis was more frequent in the adult census (8.1%) compared with the pediatric census (0.1%). These patterns were seen in a similar census done in 1999. A significant increase in relative frequency in cryptococcal cases was seen in the later census (2.8% vs. 2.0%), the increase being due to the marked increase in the adult group (8.1% vs. 4.3%), probably due to the upward trend in the incidence of HIV cases in the country. No increase in this category was seen in the pediatric population. The benefits of collaboration among institutions in coming up with a large number of cases of CNS infections and a greater variety to study was highlighted. The study was conducted by the CNS Infection Council of the Philippine Neurological Association.
Central Nervous System Protozoal Infections ; Censuses ; Philippines