Surveillance of maternal antibodies against West Nile virus in chicken eggs in South-West Germany

ObjectiveThe emergence of West Nile virus (WNV) in several European countries increases the risk of its introduction to Germany. This study evaluated a new method for WNV surveillance by testing for maternal antibodies in chicken eggs. MethodsA total of 1,990 eggs were collected in 35 sampling sites in the south-west of Germany and tested for WNV-specific antibodies. ResultsThe results did not indicate evidence for WNV circulation in the study area. ConclusionThis work serves as a proof-of-concept that such a method is useful and a potential alternative to use of sentinel chicken for regular WNV surveillance.