1. Department of Public Health, Faculty of Medicine, 49045 Angers Cedex 01, France
2. Host–parasite Interactions Study Group (UPRES-EA 3142), Laboratory of Parasitology and Mycology, Angers University Hospital, 49933 Angers Cedex 9, France
3. Department of Microbiology, Morvan University Hospital, 29609 Brest Cedex, France
4. CCLIN OUEST, Pontchaillou University Hospital, 35033 Rennes Cedex, France