| 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 |
| 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 |