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Partial sequence and residue substitution analyses of the fusion protein gene were performed for 68 strains of avian paramyxovirus type 1 of pigeons (PPMV-1), an antigenic variant of Newcastle disease virus (NDV) of chickens, derived from 16 countries between 1978 and 2002. The majority of isolates clustered into a single genetic lineage, termed VIb/1,(More)
  • E F Kaleta
  • 1990
The family of herpesviridae is divided into the subfamilies alpha-, beta- and gammaherpesvirinae. Members of the alphaherpesvirinae (infectious laryngo-tracheitis in gallinaceous birds and duck viral enteritis in waterfowl) may cause substantial economic and ecological losses. Marek's disease and turkey herpesviruses are the only members of the(More)
Newcastle disease virus (NDV) strains, isolated from outbreaks during epizootics between 1992 and 1996 in Western European countries, were compared by restriction enzyme cleavage site mapping of the fusion (F) protein gene between nucleotides 334 and 1682 and by sequence analysis between nucleotides 47 and 435. Both methods revealed that NDV strains(More)
From a virus stock (designated BVC 78) of 'viral encephalomyelitis of pigeons' an avian paramyxovirus type 1 was isolated in 1981. This virus shares all known characteristics with paramyxoviruses which were later (1982/84) obtained from diseased pigeons in the panzootic in Europe and elsewhere. It appears that the BVC 78 virus represents the first isolate(More)
We identified, cloned, and functionally characterized a new avian hepadnavirus infecting storks (STHBV). STHBV has the largest DNA genome of all avian hepadnaviruses and, based on sequence and phylogenetic analysis, is most closely related to, but distinct from, heron hepatitis B virus (HHBV). Unique for STHBV among the other avian hepadnaviruses is a(More)
In order to collect more convincing data on the aetiological agent of young pigeon disease syndrome (YPDS), a comprehensive study was performed on pigeons in German lofts with or without outbreaks of YPDS. The investigations included examination of histories, clinical signs and pathology, as well as parasitological and microbiological analysis. Pigeons in(More)
Avian polyomavirus, described originally as budgerigar fledgling disease virus, has been associated with devastating contagious disease outbreaks in budgerigar aviaries. At present, this virus affects a wide range of psittacine and non-psittacine birds worldwide, and the serum neutralisation test is used for the serodiagnosis of avian polyomavirus(More)
A review is given of the occurrence of poxviruses in different bird species. The first publications appeared in Europe around 1850. At that time, pox as a definite disease entity was diagnosed on the basis of clinical signs, while later the detection of Bollinger's inclusion bodies (1877) allowed an aetiological diagnosis by microscopically visible viral(More)
The most recent introduction of an avian influenza A virus without reassortment into mammals occurred in 1979 when H1N1 strains could be isolated from diseased pigs in northern Europe. This newly introduced avian virus formed a stable lineage in pigs and, in the meantime, spread all over Europe. In 1991 highly pathogenic H1N1 strains closely related to a(More)
OBJECTIVE A disease is described in juvenile tortoises (Testudo graeca and Geochelone elegans) consisting mainly of a soft carapace, soft plastron and deformed skeleton. The aim of this study was to determine histopathological lesions and the biological properties of the isolated viruses. MATERIALS AND METHODS Clinical signs and gross pathology were(More)