Institution: | Parasitology Unit, Croix-Rousse Hospital, Hospices Civils de Lyon, 103 Grande-Rue de la Croix–Rousse, 69317 Lyon Cedex 04, France, and; Hospital Preventive Medicine, Lausanne, Switzerland, and; Division of Infectious Diseases, Zurich University Hospital, Zurich, Switzerland, and; Microbiology Institute, Lausanne University Hospital, Lausanne, Switzerland |