Between July and August 2017, seven of 12,047 blood donations from eastern Austria, reacted positive to West Nile virus (WNV) in the cobas test (Roche). Follow-up investigations revealed Usutu virus (USUV) nucleic acid in six of these. Retrospective analyses of four blood donors diagnosed as WNV-infected in 2016 showed one USUV positive. Blood transfusion services and public health authorities in USUV-endemic areas should be aware of a possible increase of human USUV infections.
Useful keywords (using NLM MeSH Indexing)
Encephalitis Viruses, Japanese
Nucleic Acid Amplification Techniques/methods*
Polymerase Chain Reaction
Reverse Transcriptase Polymerase Chain Reaction
West Nile virus/genetics
West Nile virus/isolation*