Leishmania infantum MON-98: infection in a dog from Alto Douro, Portugal

We report the isolation of Leishmania infantum zymodeme MON-98 in Portugal, its first known occurrence outside the focus of El Agamy, Egypt. One dog found to be infected with Acanthocheilonema dracunculoides during a survey of canine filariosis in the Alto Douro region, north-east Portugal, was also discovered to have Leishmania in bone marrow. The isolated strain was identified by isoenzyme analysis. A search for other possible cases of L. infantum MON-98 infection in dogs, vectors and particularly humans is necessary to establish the real epidemiological importance of this zymodeme in the endemic region of Alto Douro.