Adriano Casulli1, Mar Siles-Lucas2, Francesca Tamarozzi3. 1. WHO Collaborating Centre for the Epidemiology, Detection and Control of Cystic and Alveolar Echinococcosis (in Animals and Humans), Department of Infectious Diseases, Istituto Superiore di Sanità, Rome, Italy; European Reference Laboratory for Parasites, Department of Infectious Diseases, Istituto Superiore di Sanità, Rome, Italy. Electronic address: adriano.casulli@iss.it. 2. Instituto de Recursos Naturales y Agrobiología de Salamanca, CSIC, Spain. 3. WHO Collaborating Centre for the Epidemiology, Detection and Control of Cystic and Alveolar Echinococcosis (in Animals and Humans), Department of Infectious Diseases, Istituto Superiore di Sanità, Rome, Italy; European Reference Laboratory for Parasites, Department of Infectious Diseases, Istituto Superiore di Sanità, Rome, Italy.