Volume 18-Issue 4-2011 Health Related Experiences among International Pilgrims Departing Through King Abdul Aziz International Airport, Jeddah, Saudi Arabia, Hajj 1431 H (2010). Pattern of diseases and preventive measures among domestic Hajjis from Riyadh, 1431H Change in carriage rate of Meningococcal meningitis among Hajjis from low and high endemic countries