The FETP participates with an epidemiologic team, as part of the preventive medicine teams during the Hajj each year, so as to conduct field studies and participate in epidemiologic investigation and surveillance of health problems during hajj. Hajj studies are designed and prepared before-hand, based on given facts and experiences aquired during previous hajj seasons. The aim of these studies is to investigate the appearance of certain epidemic diseases. Plans are made in collaboration with other involved governmental authorities to apply the recommendations of the studies in future hajj seasons, and to supervise their effectiveness.