1、USA/Canada35.2 millionEurope25.0 millionJapan11.4 mioAUS/NZ3.3 million2.82.3197.81.93.66.82.51.31.62.44.66.14.82.6Total:n million travelers0.2-1 million travelers 80 million travelers1.2Commerce and HealthPathogens travel as fast as transportation:borders are not respectedTsunamiSARSInfluenzaTerrori
2、smTravellers are exposed to a variety of hazardsSteffen,1994Leggat et al.Travel Med Inf Dis 2005;3:9-17.During TravelPreventive MedicineContingency PlanningTreatment&RehabilitationVisitorsPre-TravelPost-TravelWeighing the Evidence“Travel medicine prevention should be based on epidemiological data.”Robert Steffen,1991 What are the likely risks of a person travelling to particular destinations?What are the likely benefits of intervention?Source:http:/www.who.int/ith
