West Nile virus lineage 2 (WNV-2) was detected in the brain of 17 goshawks (Accipiter gentilis) that succumbed to neuroinvasive disease in the Czech Republic during 2018: twelve birds were captive and five wild. Furthermore, two wild sparrowhawks (Accipiter nisus) and three other captive birds of prey (golden eagle Aquila chrysaetos, hybrid saker falcon Falco cherrug × F. rusticolus and Harris's hawk Parabuteo unicinctus) also died due to WNV encephalitis. The 2018 outbreak in Czech raptors clearly reflects a new epidemiological situation and indicates an increasing risk of both raptor and human infection with WNV-2 in the country.
- MeSH
- epidemický výskyt choroby * MeSH
- některé rody čeledi Accipitridae mikrobiologie MeSH
- nemoci ptáků epidemiologie virologie MeSH
- veřejné zdravotnictví MeSH
- virus západního Nilu genetika MeSH
- západonilská horečka epidemiologie veterinární MeSH
- zvířata MeSH
- Check Tag
- zvířata MeSH
- Publikační typ
- časopisecké články MeSH
- práce podpořená grantem MeSH
- Geografické názvy
- Česká republika MeSH
In 2017, we isolated and identified West Nile virus (WNV) lineage 2 from two dead captive goshawks (Accipiter gentilis), for the first time in the Czech Republic. Goshawk might serve as an early indicator species for the ongoing WNV emergence in several European countries.
Psittacine beak and feather disease (PBFD) is one of the most significant viral diseases in psittacine birds. The aim of the presented study was to develop a highly specific and sensitive TaqMan real-time PCR assay for universal detection of beak and feather disease virus (BFDV). Primers and a hydrolysis probe were selected on the highly conserved regions belonging to the ORF1 of the BFDV genome which were identified by aligning 814 genomic sequences downloaded from the GenBank database. The evaluation of the reaction parameters suggested a reaction efficiency of 97.1%, with consistent detection of 101 virus copies/μl of nucleic acid extract. The low values of standard deviation and coefficient of variation indicate a high degree of reproducibility and repeatability. The diagnostic applicability of the assay was proven on 36 BFDV positive and 107 negative specimens of psittacine origin representing 28 species. The assay showed a 100% ability to detect distinct genetic variants of the virus. Our data suggest that the presented TaqMan real-time PCR represents a specific, sensitive and reliable assay facilitating the molecular detection of BFDV.
- MeSH
- Circovirus genetika izolace a purifikace MeSH
- diagnostické techniky molekulární metody MeSH
- DNA primery genetika MeSH
- infekce viry čeledi Circoviridae diagnóza veterinární virologie MeSH
- kvantitativní polymerázová řetězová reakce metody MeSH
- nemoci ptáků diagnóza virologie MeSH
- oligonukleotidové sondy genetika MeSH
- ptáci MeSH
- reprodukovatelnost výsledků MeSH
- senzitivita a specificita MeSH
- veterinární lékařství metody MeSH
- zvířata MeSH
- Check Tag
- zvířata MeSH
- Publikační typ
- časopisecké články MeSH
- hodnotící studie MeSH
Six kea (Nestor notabilis) in human care, naturally infected with West Nile virus (WNV) lineage 2 in Vienna, Austria, in 2008, developed mild to fatal neurological signs. WNV RNA persisted and the virus evolved in the birds' brains, as demonstrated by (phylo)genetic analyses of the complete viral genomes detected in kea euthanized between 2009 and 2014. WNV antibodies persisted in the birds, too. Chronic WNV infection in the brain might contribute to the circulation of the virus through oral transmission to predatory birds.
- MeSH
- chronická nemoc MeSH
- epidemický výskyt choroby MeSH
- fylogeneze MeSH
- genom virový genetika MeSH
- mozek patologie virologie MeSH
- nemoci ptáků patologie virologie MeSH
- papouškovití virologie MeSH
- virus západního Nilu klasifikace izolace a purifikace fyziologie MeSH
- západonilská horečka patologie veterinární virologie MeSH
- zvířata v ZOO MeSH
- zvířata MeSH
- Check Tag
- mužské pohlaví MeSH
- ženské pohlaví MeSH
- zvířata MeSH
- Publikační typ
- časopisecké články MeSH
- práce podpořená grantem MeSH
- Geografické názvy
- Rakousko MeSH
We examined 146 common coots (Fulica atra) on fishponds in central Moravia, Czech Republic, for antibodies to West Nile (WNV) and Usutu (USUV) flaviviruses. Eighteen birds reacted in the plaque-reduction neutralization test against WNV; these WNV seropositive samples were then titrated in parallel against USUV and tick-borne encephalitis virus (TBEV) to exclude flavivirus cross-reactivity. Two birds (1.4% overall) had the highest titers against WNV while 9 birds (6.2% overall) were seropositive for USUV, and in 7 birds the infecting flavivirus could not be differentiated with certainty. Our results indicate that both WNV and USUV infections occur in common coots; these birds might serve as a 'sentinel' species indicating the presence of these viruses at fishpond and wetland habitats in Central Europe.
- MeSH
- Flavivirus izolace a purifikace MeSH
- infekce viry z čeledi Flaviviridae epidemiologie veterinární virologie MeSH
- nemoci ptáků epidemiologie virologie MeSH
- neutralizační testy MeSH
- ptáci virologie MeSH
- sentinelová surveillance MeSH
- zvířata MeSH
- Check Tag
- zvířata MeSH
- Publikační typ
- časopisecké články MeSH
- práce podpořená grantem MeSH
- Geografické názvy
- Česká republika MeSH
The central European lineage of Usutu virus was isolated from a blackbird (Turdus merula), which was found dead in the city of Brno, Czech Republic, in 2011. The virus RNA was detected in two other dead blackbirds in Brno during 2012.
- MeSH
- analýza přežití MeSH
- demografie MeSH
- DNA primery genetika MeSH
- Flavivirus genetika izolace a purifikace MeSH
- fylogeneze MeSH
- infekce viry z rodu Flavivirus epidemiologie veterinární MeSH
- molekulární sekvence - údaje MeSH
- mozek virologie MeSH
- myši MeSH
- nemoci ptáků epidemiologie virologie MeSH
- Passeriformes virologie MeSH
- polymerázová řetězová reakce s reverzní transkripcí veterinární MeSH
- sekvence nukleotidů MeSH
- sekvenční analýza DNA MeSH
- shluková analýza MeSH
- zvířata MeSH
- Check Tag
- mužské pohlaví MeSH
- myši MeSH
- zvířata MeSH
- Publikační typ
- časopisecké články MeSH
- práce podpořená grantem MeSH
- Geografické názvy
- Česká republika MeSH
In winter 2003-04, large numbers of budgerigars (Mellopsitacus undulatus) and cockatiels (Nymphicus hollandicus) fell ill and died in a large parrot-breeding aviary in Slovakia. In budgerigars, the disease outbreak occurred at the age of 2-3 weeks; cockatiels died within their first 7 days of life. In budgerigars, symptoms of the disease included delayed growth, tremor, darkish discoloration of skin, quill bleeding, and feathering defects. cockatiels often died without any symptoms and with a full crop; feathering defects occurred sporadically. Electron microscopy with negative staining of aqueous lysates of the affected skin and of bleeding quills showed isolated or clustered polyomavirus particles 45-50 nm in size. Long filamentous forms of the virus were also found in virion clusters of skin lysates from the budgerigars. In ultrathin sections through the pathologically altered skin tissue of budgerigars, virus particles were present in both nuclei and cytoplasm of epidermal cells, often in crystalline form. In infected cells, enlarged nuclei showed an extensive chromatin margination. On the DNA level, presence of a polyomavirus infection was conclusively proved by the polymerase chain reaction using avian polyomavirus (APV)-specific primers. A sequence analysis of the gene encoding viral protein (VP)1 and of the combined region for VP2 and VP3 proteins revealed a previously undescribed synonymous mutation in this isolate. This report extended the knowledge of the area of APV occurrence and of the spectrum of hosts in the context of genomic and morphologic variability of APV isolates.
- MeSH
- DNA virů genetika MeSH
- epidemický výskyt choroby veterinární MeSH
- financování organizované MeSH
- genom virový MeSH
- infekce onkogenními viry veterinární virologie MeSH
- kakaduové virologie MeSH
- Melopsittacus virologie MeSH
- nemoci ptáků epidemiologie virologie MeSH
- polyomavirové infekce veterinární virologie MeSH
- Polyomavirus genetika izolace a purifikace ultrastruktura MeSH
- zvířata MeSH
- Check Tag
- zvířata MeSH
- Geografické názvy
- Slovenská republika MeSH
- MeSH
- antivirové látky MeSH
- lidé MeSH
- nemoci ptáků prevence a kontrola přenos virologie MeSH
- vakcinace MeSH
- Check Tag
- lidé MeSH
- MeSH
- ekosystém MeSH
- hmyz - vektory virologie MeSH
- lidé MeSH
- nemoci ptáků epidemiologie virologie MeSH
- virus západního Nilu izolace a purifikace MeSH
- západonilská horečka epidemiologie přenos veterinární MeSH
- zvířata MeSH
- Check Tag
- lidé MeSH
- zvířata MeSH
- Publikační typ
- přehledy MeSH
- Geografické názvy
- Evropa MeSH
- Severní Amerika MeSH
