Analyze Diet
Emerging infectious diseases2021; 27(9); 2466-2470; doi: 10.3201/eid2709.204706

Ecologic Determinants of West Nile Virus Seroprevalence among Equids, Brazil.

Abstract: Among 713 equids sampled in northeastern Brazil during 2013-2018, West Nile virus seroprevalence was 4.5% (95% CI 3.1%-6.3%). Mathematical modeling substantiated higher seroprevalence adjacent to an avian migratory route and in areas characterized by forest loss, implying increased risk for zoonotic infections in disturbed areas.
Publication Date: 2021-08-24 PubMed ID: 34424166PubMed Central: PMC8386811DOI: 10.3201/eid2709.204706Google Scholar: Lookup
The Equine Research Bank provides access to a large database of publicly available scientific literature. Inclusion in the Research Bank does not imply endorsement of study methods or findings by Mad Barn.
  • Journal Article
  • Research Support
  • Non-U.S. Gov't

Summary

This research summary has been generated with artificial intelligence and may contain errors and omissions. Refer to the original study to confirm details provided. Submit correction.

The research article investigates the relationship between environmental factors and the prevalence of West Nile Virus among equids in northeastern Brazil, using data collected between 2013 and 2018. The study indicates a higher risk of zoonotic infections in areas affected by factors such as proximity to avian migratory routes and forest loss.

Research Methodology

  • The study was conducted on 713 equids (a group of animals that includes horses, donkeys, and zebras) in northeastern Brazil over a five-year period between 2013 and 2018.
  • Serological testing was used to determine the presence of West Nile Virus in these animals.
  • The researchers used mathematical modeling to quantify the effects of different ecological factors on disease prevalence.

Key Findings

  • The overall prevalence of West Nile Virus in the studied population was found to be 4.5%.
  • The study substantiates a higher prevalence of West Nile Virus in areas adjacent to avian migratory routes and in areas characterized by forest loss.

Implications and Conclusions

  • The findings of this study underscore the impact of ecological disturbances, such as deforestation, on zoonotic disease prevalence and spread.
  • These results imply an increased risk for zoonotic infections like West Nile Virus in areas disturbed due to anthropogenic activities or natural factors.
  • This research can aid in formulating targeted, location-specific strategies for disease prevention and control.

Cite This Article

APA
de Oliveira-Filho EF, Fischer C, Berneck BS, Carneiro IO, Kühne A, de Almeida Campos AC, Ribas JRL, Netto EM, Franke CR, Ulbert S, Drexler JF. (2021). Ecologic Determinants of West Nile Virus Seroprevalence among Equids, Brazil. Emerg Infect Dis, 27(9), 2466-2470. https://doi.org/10.3201/eid2709.204706

Publication

ISSN: 1080-6059
NlmUniqueID: 9508155
Country: United States
Language: English
Volume: 27
Issue: 9
Pages: 2466-2470

Researcher Affiliations

de Oliveira-Filho, Edmilson F
    Fischer, Carlo
      Berneck, Beatrice Sarah
        Carneiro, Ianei O
          Kühne, Arne
            de Almeida Campos, Angelica C
              Ribas, Jorge R L
                Netto, Eduardo Martins
                  Franke, Carlos Roberto
                    Ulbert, Sebastian
                      Drexler, Jan Felix

                        MeSH Terms

                        • Animals
                        • Brazil / epidemiology
                        • Ecology
                        • Seroepidemiologic Studies
                        • West Nile Fever / epidemiology
                        • West Nile Fever / veterinary
                        • West Nile virus

                        References

                        This article includes 15 references
                        1. Petersen LR, Brault AC, Nasci RS. West Nile virus: review of the literature.. JAMA 2013 Jul 17;310(3):308-15.
                          doi: 10.1001/jama.2013.8042pmc: PMC4563989pubmed: 23860989google scholar: lookup
                        2. Rockstroh A, Moges B, Berneck BS, Sattler T, Revilla-Fernández S, Schmoll F, Pacenti M, Sinigaglia A, Barzon L, Schmidt-Chanasit J, Nowotny N, Ulbert S. Specific detection and differentiation of tick-borne encephalitis and West Nile virus induced IgG antibodies in humans and horses.. Transbound Emerg Dis 2019 Jul;66(4):1701-1708.
                          doi: 10.1111/tbed.13205pubmed: 30985075google scholar: lookup
                        3. Dodd RY, Foster GA, Stramer SL. Keeping Blood Transfusion Safe From West Nile Virus: American Red Cross Experience, 2003 to 2012.. Transfus Med Rev 2015 Jul;29(3):153-61.
                          doi: 10.1016/j.tmrv.2015.03.001pubmed: 25841631google scholar: lookup
                        4. Ward MP, Scheurmann JA. The relationship between equine and human West Nile virus disease occurrence.. Vet Microbiol 2008 Jun 22;129(3-4):378-83.
                          doi: 10.1016/j.vetmic.2007.11.022pubmed: 18182255google scholar: lookup
                        5. Mattar S, Edwards E, Laguado J, González M, Alvarez J, Komar N. West Nile virus antibodies in Colombian horses.. Emerg Infect Dis 2005 Sep;11(9):1497-8.
                          doi: 10.3201/eid1109.050426pmc: PMC3310636pubmed: 16673523google scholar: lookup
                        6. Morales MA, Barrandeguy M, Fabbri C, Garcia JB, Vissani A, Trono K, Gutierrez G, Pigretti S, Menchaca H, Garrido N, Taylor N, Fernandez F, Levis S, Enría D. West Nile virus isolation from equines in Argentina, 2006.. Emerg Infect Dis 2006 Oct;12(10):1559-61.
                          doi: 10.3201/eid1210.060852pmc: PMC3290965pubmed: 17176571google scholar: lookup
                        7. Silva JR, Medeiros LC, Reis VP, Chavez JH, Munhoz TD, Borges GP, Soares OA, Campos CH, Machado RZ, Baldani CD, Silva ML, Faria JL, Silva EE, Figueiredo LT. Serologic survey of West Nile virus in horses from Central-West, Northeast and Southeast Brazil.. Mem Inst Oswaldo Cruz 2013 Nov;108(7):921-3.
                          doi: 10.1590/0074-0276130052pmc: PMC3970643pubmed: 24037110google scholar: lookup
                        8. Ometto T, Durigon EL, de Araujo J, Aprelon R, de Aguiar DM, Cavalcante GT, Melo RM, Levi JE, de Azevedo Júnior SM, Petry MV, Neto IS, Serafini P, Villalobos E, Cunha EM, Lara Mdo C, Nava AF, Nardi MS, Hurtado R, Rodrigues R, Sherer AL, Sherer Jde F, Geraldi MP, de Seixas MM, Peterka C, Bandeira Dde S, Pradel J, Vachiery N, Labruna MB, de Camargo LM, Lanciotti R, Lefrançois T. West Nile virus surveillance, Brazil, 2008-2010.. Trans R Soc Trop Med Hyg 2013 Nov;107(11):723-30.
                          doi: 10.1093/trstmh/trt081pubmed: 24008895google scholar: lookup
                        9. Vieira MA, Romano AP, Borba AS, Silva EV, Chiang JO, Eulálio KD, Azevedo RS, Rodrigues SG, Almeida-Neto WS, Vasconcelos PF. West Nile Virus Encephalitis: The First Human Case Recorded in Brazil.. Am J Trop Med Hyg 2015 Aug;93(2):377-9.
                          doi: 10.4269/ajtmh.15-0170pmc: PMC4530764pubmed: 26055749google scholar: lookup
                        10. Martins LC, Silva EVPD, Casseb LMN, Silva SPD, Cruz ACR, Pantoja JAS, Medeiros DBA, Martins Filho AJ, Cruz EDRMD, Araújo MTF, Cardoso JF, Cunha MACRD, Almada GL, Romano APM, Santos MGDP, Rodrigues GAP, Chiang JO, Quaresma JAS, Carvalho VL, Vasconcelos PFDC. First isolation of West Nile virus in Brazil.. Mem Inst Oswaldo Cruz 2019 Jan 17;114:e180332.
                          doi: 10.1590/0074-02760180332pmc: PMC6343470pubmed: 30672980google scholar: lookup
                        11. Fischer C, de Oliveira-Filho EF, Drexler JF. Viral emergence and immune interplay in flavivirus vaccines.. Lancet Infect Dis 2020 Jan;20(1):15-17.
                          doi: 10.1016/S1473-3099(19)30697-8pubmed: 31876486google scholar: lookup
                        12. Pauvolid-Corrêa A, Campos Z, Juliano R, Velez J, Nogueira RM, Komar N. Serological evidence of widespread circulation of West Nile virus and other flaviviruses in equines of the Pantanal, Brazil.. PLoS Negl Trop Dis 2014 Feb;8(2):e2706.
                        13. Moreira-Soto A, de Souza Sampaio G, Pedroso C, Postigo-Hidalgo I, Berneck BS, Ulbert S, Brites C, Netto EM, Drexler JF. Rapid decline of Zika virus NS1 antigen-specific antibody responses, northeastern Brazil.. Virus Genes 2020 Oct;56(5):632-637.
                          doi: 10.1007/s11262-020-01772-2pmc: PMC7294518pubmed: 32542479google scholar: lookup
                        14. Gibb R, Redding DW, Chin KQ, Donnelly CA, Blackburn TM, Newbold T, Jones KE. Zoonotic host diversity increases in human-dominated ecosystems.. Nature 2020 Aug;584(7821):398-402.
                          doi: 10.1038/s41586-020-2562-8pubmed: 32759999google scholar: lookup
                        15. Swaddle JP, Calos SE. Increased avian diversity is associated with lower incidence of human West Nile infection: observation of the dilution effect.. PLoS One 2008 Jun 25;3(6):e2488.

                        Citations

                        This article has been cited 9 times.
                        1. Dos Santos Conceição M, Chahad-Ehlers S, Dos Santos-Neto LG, Sant'Ana AL, Ribeiro GPM, do Rocio Klisiowicz D, Silva-Inacio CL, de Moura Barbosa T, Gama RA, Lozovei AL, de Andrade AJ. Culicidae (Diptera: Culicomorpha) in the southern Brazilian 'Ana Leuch Lozovei' collection, with notes on distribution and diversity. GigaByte 2022;2022:gigabyte55.
                          doi: 10.46471/gigabyte.55pubmed: 36824533google scholar: lookup
                        2. Ganzenberg S, Sieg M, Ziegler U, Pfeffer M, Vahlenkamp TW, Hörügel U, Groschup MH, Lohmann KL. Seroprevalence and Risk Factors for Equine West Nile Virus Infections in Eastern Germany, 2020. Viruses 2022 May 30;14(6).
                          doi: 10.3390/v14061191pubmed: 35746662google scholar: lookup
                        3. Oliveira-Filho EF, Carneiro IO, Fischer C, Kühne A, Postigo-Hidalgo I, Ribas JRL, Schumann P, Nowak K, Gogarten JF, de Lamballerie X, Dantas-Torres F, Netto EM, Franke CR, Couacy-Hymann E, Leendertz FH, Drexler JF. Evidence against Zika virus infection of pets and peri-domestic animals in Latin America and Africa. J Gen Virol 2022 Jan;103(1).
                          doi: 10.1099/jgv.0.001709pubmed: 35077341google scholar: lookup
                        4. Saivish MV, da Silva NIO, Steck MR, Marques RE, Nogueira ML, Rossi SL, Vasilakis N. Standardization of Quantitative Plaque-Based Viral Assays for Orthoflavivirus Cacipacoré. Viruses 2025 Oct 10;17(10).
                          doi: 10.3390/v17101355pubmed: 41157626google scholar: lookup
                        5. Schwarzer A, Ziegler U, Fertey J, Kreuz M, Vahlenkamp TW, Groschup MH, Ulbert S. Serological differentiation of West Nile, Usutu, and tick-borne encephalitis virus antibodies in birds and horses using mutant E protein ELISAs. Sci Rep 2025 Aug 6;15(1):28752.
                          doi: 10.1038/s41598-025-14448-4pubmed: 40770485google scholar: lookup
                        6. Dye-Braumuller KC, Prisco RA, Nolan MS. (Re)Emerging Arboviruses of Public Health Significance in the Brazilian Amazon. Microorganisms 2025 Mar 12;13(3).
                        7. Steck MR, Buenemann M, Vasilakis N. Bussuquara Virus: A Neglected Orthoflavivirus with Broad Distribution Across Central and South America and the Caribbean. Viruses 2025 Jan 27;17(2).
                          doi: 10.3390/v17020183pubmed: 40006938google scholar: lookup
                        8. Saivish MV, Nogueira ML, Rossi SL, Vasilakis N. Beyond Borders: Investigating the Mysteries of Cacipacoré, a Lesser-Studied Arbovirus in Brazil. Viruses 2024 Feb 22;16(3).
                          doi: 10.3390/v16030336pubmed: 38543701google scholar: lookup
                        9. Salas-Rojas M, de Oliveira-Filho EF, Almazán-Marín C, Rodas-Martínez AZ, Aguilar-Setién Á, Drexler JF. Serological evidence for potential yellow fever virus infection in non-human primates, southeastern Mexico. One Health Outlook 2023 Oct 24;5(1):14.
                          doi: 10.1186/s42522-023-00090-5pubmed: 37876014google scholar: lookup