| monitoring of usutu virus activity and spread by using dead bird surveillance in austria, 2003-2005. | usutu virus has been causing avian mortality in austria since its emergence in 2001. between 2003 and 2005 a total of 504 dead birds were examined by reverse-transcriptase polymerase chain reaction and immunohistochemistry for the presence of usutu virus nucleic acid and antigen, respectively. in 2003, 92 birds (out of 177 birds) belonging to five different species were positive, while in 2004, only 11 (of 224) birds, and in 2005, 4 (of 103) birds proved positive, all of which were blackbirds (t ... | 2007 | 17346908 |
| explaining usutu virus dynamics in austria: model development and calibration. | usutu virus (usuv), a flavivirus of the japanese encephalitis virus complex, was for the first time detected outside africa in the region around vienna (austria) in 2001 by weissenböck et al. [weissenböck, h., kolodziejek, j., url, a., lussy, h., rebel-bauder, b., nowotny, n., 2002. emergence of usutu virus, an african mosquito-borne flavivirus of the japanese encephalitis virus group, central europe. emerg. infect. dis. 8, 652-656]. usuv is an arthropod-borne virus (arbovirus) circulating betwe ... | 2008 | 18314208 |
| simulation of climate-change scenarios to explain usutu-virus dynamics in austria. | the emergence and spread of infectious diseases in mid-latitudes, so far mainly observed in the tropics, considerably increase under the current situation of climate change. a recent example is the usutu virus (usuv) outbreak in austria. usuv is closely related to the west nile virus in the u.s. and caused mass mortalities mainly of blackbirds (turdus merula). the usuv flavivirus persists in a natural transmission cycle between vectors (mosquitoes) and host reservoirs (birds) and leads - once en ... | 2009 | 18715663 |
| emergence and establishment of usutu virus infection in wild and captive avian species in and around zurich, switzerland--genomic and pathologic comparison to other central european outbreaks. | in late summer 2006 considerable mortality in wild and captive passeriformes and strigiformes was observed in zurich, switzerland. all animals were found in a range of 2 km(2). observed clinical signs involved depression, ruffled plumage, incoordination, seizures and peracute death. nutritional status was generally moderate to poor in wild birds, and variable in captive animals. necropsy showed marked splenomegaly, a mild hepatomegaly, and pulmonary hyperemia in most animals. histopathologic les ... | 2010 | 20980109 |
| mosquitoes (diptera: culicidae) and their relevance as disease vectors in the city of vienna, austria. | mosquitoes (diptera: culicidae) are important vectors for a wide range of pathogenic organisms. as large parts of the human population in developed countries live in cities, the occurrence of vector-borne diseases in urban areas is of particular interest for epidemiologists and public health authorities. in this study, we investigated the mosquito occurrence in the city of vienna, austria, in order to estimate the risk of transmission of mosquito-borne diseases. mosquitoes were captured using di ... | 2014 | 25468380 |
| usutu virus activity in austria, 2001-2002. | usutu virus (usuv), a member of the mosquito-borne clade within the flaviviridae family, was responsible for avian mortality in austria in 2001. in 2002, the virus continued to kill birds, predominantly blackbirds. high numbers of avian deaths were recorded within the city of vienna and in surrounding districts of the federal state of lower austria, while single die-offs were noticed in the federal states of styria and burgenland. a total of 72 birds were submitted for laboratory examination, 30 ... | 2003 | 14554255 |
| low usutu virus seroprevalence in four zoological gardens in central europe. | usutu virus (usuv), a mosquito-borne flavivirus of the japanese encephalitis virus antigenic group, caused bird die-offs in austria, hungary and switzerland between 2001 and 2009. while the zoological gardens of vienna and zurich recorded usuv-associated mortality in different species of birds during this period, incidences in budapest were limited to areas outside the zoo, and in the greater basel area avian mortality due to usuv infection was not observed at all. the objectives of this investi ... | 2013 | 23919825 |