<prompt> Site where Neisseria Meningitidis bacteria harbour normally?SkinGenitalsNasopharynxLower GIT  <response>: Ref: Microbiology by Ananthanarayan and Paniker, 8th ed. pg. 224-25; K. Park 20th ed. pg. 150, 151 N. Meningococci are capsulated Gram negative diplococci Reservoir for N. Meningitides-Human nasopharynx is only reservoir of meningococcus. N. meningitidis Most important source- carriers are the most imp source, not clinical cases. They are arranged in pairs with adjacent sides flattened--7 half moon shaped. Transport medium--Stuarts medium. Blood agar, chocolate agar and Muller-Hinton agar are the media commonly used for culturing meningococci. Age group- 3 month-5 years Serotype- total 13, out of which serotype A, B, C are most important Serotype A- Epidemics Serotype B- Both epidemic and local outbreaks Serotype C- Local out breaks Chemoprophylaxis has been suggested for close contacts. Is DOC for prophylaxis. Ceftriaxone ciprofloxacin Rifampicin 