Incidence of malaria and risk factors in Italian travelers to malaria endemic countries.

Background: Imported malaria has been an increasing problem in Italy in the last three decades of the 1900s, representing the main risk for travelers visiting tropical and sub-tropical countries where malaria is endemic. Even though the total number of imported cases has been declining since 2000, malaria still represents the most frequent notifiable imported disease in Italy. The present study analyzes all the malaria cases reported in Italy in 2000-2006 in order to assess the trend of incidence over the time and reviewing the risk factors for travelers visiting malaria endemic countries.