1 National Referral Unit for Imported Tropical Diseases, Tropical and Travel Medicine Unit, Hospital La Paz-Carlos III, Madrid, Spain. Electronic address: [email protected].
2 Department of Preventive Medicine, Public Health and Microbiology, Facultad de Medicina, Universidad Autónoma de Madrid, Spain.
3 National Referral Unit for Imported Tropical Diseases, Tropical and Travel Medicine Unit, Hospital La Paz-Carlos III, Madrid, Spain.