IntensiveWest Nile Virus Circulation in Serbia in 2018—Results of Integrated Surveillance Program
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Date
2021Author
Petrović, Tamaš
Šekler, Milanko
Petrić, Dušan
Vidanović, Dejan
Debeljak, Zoran
Lazić, Gospava
Lupulović, Diana
Kavran, Mihaela
Samojlović, Milena
Ignjatović-Ćupina, Aleksandra
Tešović, Bojana
Lazić, Sava
Kolarević, Mišo
Labus, Tatjana
Đurić, Boban
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The results of the Serbian national integrated West Nile virus (WNV) surveillance program
conducted in 2018 and funded by the Serbian Veterinary Directorate are presented. The WNV
surveillance program encompassed the entire territory of Serbia and was conducted by the veterinary
service in collaboration with entomologists and ornithologists. The objective of the program was
early detection of WNV circulation in the environment and timely reporting to the public health
service and local authorities to increase clinical and mosquito control preparedness. The program
was based on the detection of WNV presence in wild birds (natural hosts) and mosquitoes (virus
vectors) and on serological testing of sentinel horses (WNV-specific IgM antibodies). The season 2018
was confirmed to be the season of the most intensive WNV circulation with the highest number and
severity of human cases in Serbia ever reported. The most intense WNV circulation was observed
in the northern and central parts of Serbia including Vojvodina Province, the Belgrade City area,
and surrounding districts, where most positive samples were detected among sentinel animals,
mosquitoes and wild birds. The majority of human cases were preceded by the detection of WNV
circulation during the surveillance. The WNV surveillance program in 2018 showed satisfactory
results in the capacity to indicate the spatial distribution of the risk for humans and sensitivity to
early detection of WNV circulation in the environment.
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