The European Network on Imported Infectious Disease Surveillance, TropNetEurop, is an electronic network of clinical sites that monitors imported infectious diseases in Europe http://www.tropnet.net. Since its foundation in 1999, the network has recorded 8,374 cases of malaria, of which close to 11% (930) were due to P. vivax. Worth mentioning, TropNetEurop covers approximately 10% of all malaria cases reported in Europe. Moreover, according to data from the Spanish National Center of Epidemiology and the Autonomous Government of Catalonia there have been 266 cases of P. vivax in Spain in the last six years. In addition, three cases of severe symptoms due to P. vivax in Europe have been reported elsewhere in the literature [11] [12] [13] . These figures illustrate the clinical-epidemiological importance of this parasitic disease in a supposedly malaria-free region.