My primary research interests are on the epidemiology and pathogenesis of arthropod-borne and zoonotic viral diseases. Most of my work involves field studies of the ecology of the viruses and laboratory investigations on their pathology in animals. I am also director of the World Reference Center of Emerging Viruses and Arboviruses. This is a large collection, which includes most of the known arboviruses as well as reagents (antibodies and antigens) for them. These are distributed at no cost to qualified investigators throughout the world. The Reference Collection is an invaluable resource for persons interested in comparative studies of viral interrelationships and pathogenicity. We also receive unknown virus samples for identification and characterization.