Meningococcal disease associated with the Haj--update.
D018562:Disease Transmission, Infectious; D005260:Female; D006801:Humans; D015994:Incidence; D007514:Islam; D008297:Male; D008589:Meningococcal Infections / Q000453:epidemiology* / Q000635:transmission; D012307:Risk Factors; D012529:Saudi Arabia / Q000453:epidemiology; D015996:Survival Rate; D014195:Travel; D006113:United Kingdom / Q000453:epidemiology