Evidence map›Paper›PMID 32326472›Full record

ArticleViruses2020

West Nile Virus Epidemic in Germany Triggered by Epizootic Emergence, 2019.

Ute Ziegler, Pauline Dianne Santos, Martin H Groschup, Carolin Hattendorf, Martin Eiden, Dirk Höper, Philip Eisermann, Markus Keller, Friederike Michel, Robert Klopfleisch and 16 more

Registry-linked trialAbstract read
In one paragraph

Article in Viruses, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT05294003 (Prevalence of West Nile Virus and Usutu Virus Serum Antibodies in Dutch Bird Ringers), which is not on this map. Cited by 79 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
79citing papers in PubMed, 1 pooled it
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

NCT05294003 completednot on this mapstarted 2021, after this paper: background citation

Prevalence of West Nile Virus and Usutu Virus Serum Antibodies in Dutch Bird Ringers

TypeobservationalSponsorLeiden University Medical CenterRan2021 to 2021Enrolled162ConditionsWest Nile Virus
3 · Its place in the literature

Who cites it

79 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Pooled it
  2. Article
  3. Endemic progression of autochthonous West Nile virus infections in Europe.European journal of microbiology & immunology · 2026
    Review
  4. Article
  5. Article
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  7. Article
  8. Article
  9. Article
  10. Article
  11. Article
  12. Article
  13. Article
  14. Review
  15. Article
  16. Assessment of the effectiveness of West Nile virus screening by analysing suspected positive donations among blood donors, Germany, 2020 to 2023.Euro surveillance : bulletin Europeen sur les maladies transmissibles = European communicable disease bulletin · 2025
    Article
  17. First Detection of West Nile Virus Lineage 2 inPathogens (Basel, Switzerland) · 2024
    Article
  18. Article
  19. Article
  20. Article

19 more citing papers are in PubMed but not listed here.

4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

26 authors.

Ute ZieglerFriedrich-Loeffler-Institut, Federal Research Institute for Animal Health, Institute of Novel and Emerging Infectious Diseases, 17493 Greifswald-Insel Riems, Germany.
Pauline Dianne SantosFriedrich-Loeffler-Institut, Federal Research Institute for Animal Health, Institute of Diagnostic Virology, 17493 Greifswald-Insel Riems, Germany.
Martin H GroschupFriedrich-Loeffler-Institut, Federal Research Institute for Animal Health, Institute of Novel and Emerging Infectious Diseases, 17493 Greifswald-Insel Riems, Germany.
Carolin HattendorfBernhard Nocht Institute for Tropical Medicine, WHO Collaborating Centre for Arbovirus and Hemorrhagic Fever Reference and Research, 20359 Hamburg, Germany.
Martin EidenFriedrich-Loeffler-Institut, Federal Research Institute for Animal Health, Institute of Novel and Emerging Infectious Diseases, 17493 Greifswald-Insel Riems, Germany.
Dirk HöperFriedrich-Loeffler-Institut, Federal Research Institute for Animal Health, Institute of Diagnostic Virology, 17493 Greifswald-Insel Riems, Germany.
Philip EisermannBernhard Nocht Institute for Tropical Medicine, WHO Collaborating Centre for Arbovirus and Hemorrhagic Fever Reference and Research, 20359 Hamburg, Germany.
Markus KellerFriedrich-Loeffler-Institut, Federal Research Institute for Animal Health, Institute of Novel and Emerging Infectious Diseases, 17493 Greifswald-Insel Riems, Germany.
Friederike MichelFriedrich-Loeffler-Institut, Federal Research Institute for Animal Health, Institute of Novel and Emerging Infectious Diseases, 17493 Greifswald-Insel Riems, Germany.
Robert KlopfleischFreie Universitat Berlin, Institute of Veterinary Pathology, 14163 Berlin, Germany.
Kerstin MüllerFreie Universität Berlin, Department of Veterinary Medicine, Small Animal Clinic, 14163 Berlin, Germany.
Doreen WernerLeibniz-Centre for Agricultural Landscape Research, 15374 Müncheberg, Germany.
Helge KampenFriedrich-Loeffler-Institut, Federal Research Institute for Animal Health, Institute of Infectiology, 17493 Greifswald-Insel Riems, Germany.
Martin BeerFriedrich-Loeffler-Institut, Federal Research Institute for Animal Health, Institute of Diagnostic Virology, 17493 Greifswald-Insel Riems, Germany.
Christina FrankRobert Koch Institute, Department of Infectious Disease Epidemiology, 13353 Berlin, Germany.
Raskit LachmannRobert Koch Institute, Department of Infectious Disease Epidemiology, 13353 Berlin, Germany.
Birke Andrea TewsFriedrich-Loeffler-Institut, Federal Research Institute for Animal Health, Institute of Infectiology, 17493 Greifswald-Insel Riems, Germany.
Claudia WylezichFriedrich-Loeffler-Institut, Federal Research Institute for Animal Health, Institute of Diagnostic Virology, 17493 Greifswald-Insel Riems, Germany.
Monika RinderLudwig Maximilians University Munich, Centre for Clinical Veterinary Medicine, Clinic for Birds, Small Mammals, Reptiles and Ornamental Fish, 85764 Oberschleißheim, Germany.
Lars LachmannNature and Biodiversity Conservation Union, 10117 Berlin, Germany.
Thomas GrünewaldKlinikum Chemnitz, Infectious Diseases and Tropical Medicine Clinic, 09116 Chemnitz, Germany.
Claudia A SzentiksLeibniz-Institute for Zoo- and Wildlife Research (IZW), 10315 Berlin, Germany.
Michael SiegLeipzig University, Faculty of Veterinary Medicine, Institute of Virology, 04103 Leipzig, Germany.
Jonas Schmidt-ChanasitBernhard Nocht Institute for Tropical Medicine, WHO Collaborating Centre for Arbovirus and Hemorrhagic Fever Reference and Research, 20359 Hamburg, Germany.
Daniel CadarBernhard Nocht Institute for Tropical Medicine, WHO Collaborating Centre for Arbovirus and Hemorrhagic Fever Reference and Research, 20359 Hamburg, Germany.
Renke LühkenBernhard Nocht Institute for Tropical Medicine, WHO Collaborating Centre for Arbovirus and Hemorrhagic Fever Reference and Research, 20359 Hamburg, Germany.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

One year after the first autochthonous transmission of West Nile virus (WNV) to birds and horses in Germany, an epizootic emergence of WNV was again observed in 2019. The number of infected birds and horses was considerably higher compared to 2018 (12 birds, two horses), resulting in the observation of the first WNV epidemy in Germany: 76 cases in birds, 36 in horses and five confirmed mosquito-borne, autochthonous human cases. We demonstrated that Germany experienced several WNV introduction events and that strains of a distinct group (Eastern German WNV clade), which was introduced to Germany as a single introduction event, dominated mosquito, birds, horse and human-related virus variants in 2018 and 2019. Virus strains in this clade are characterized by a specific-Lys2114Arg mutation, which might lead to an increase in viral fitness. Extraordinary high temperatures in 2018/2019 allowed a low extrinsic incubation period (EIP), which drove the epizootic emergence and, in the end, most likely triggered the 2019 epidemic. Spatiotemporal EIP values correlated with the geographical WNV incidence. This study highlights the risk of a further spread in Germany in the next years with additional human WNV infections. Thus, surveillance of birds is essential to provide an early epidemic warning and thus, initiate targeted control measures.

Indexed as

West Nile virusAnimalsBayes TheoremCommunicable Diseases, EmergingEpidemicsGenome, ViralGeography, MedicalGermanyHumansPhylogenyPhylogeographyPopulation SurveillanceRisk AssessmentViral ZoonosesWest Nile FeverbirdepidemicepizootyGermanyhorseshumanmosquitoestransmission riskWest Nile viruszoonoses

Identifiers

PMID32326472
PMCPMC7232143

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Registered trials

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.