Mosquitos (Diptera

Culicidae) en el caserío de Chingalé, Santander, donde se registró un caso humano de encefalitis equina venezolana

Translated title of the contribution: Mosquitos (Diptera: Culicidae) in the small village where a human case of Venezuelan equine encephalitis was recorded

Cristina Ferro, Víctor Alberto Olano, Martha Ahumada, Scott Weaver

Research output: Contribution to journalArticle

12 Citations (Scopus)

Abstract

Introduction. The enzootic focus of subtype ID of Venezuelan equine encephalitis (VEE) virus in the Central Magdalena region (central Colombia) occasionally produces human cases. The report of a VEE infection in a three-year-old girl in the small village of Chingalé, municipality of Puerto Wilches, Santander, motivated this study. Objective. The village of Chingalé was evaluated as the probable site of infection. Materials and methods. In June 2005, mosquitoes were collected with CDC light traps in and outside of dwellings in the village. Trinidad traps were placed in nearby vegetation, and hamsters were used as sentinel animals near homes. Results. One hundred and seven samples, consisting of 14,423 mosquitoes of 35 species were collected. The relative abundance of incriminated vectors of subtype ID of VEE, Culex (Melanoconion) pedroi and Cx. (Mel.) ocossa, was generally low (<4%), but both species were more frequent outside of dwellings than indoors. Cx. (Mel.) ocossa was collected in CDC traps and was more frequent indoors, whereas Cx. (Mel.) pedroi was found in the Trinidad traps. In addition, Psorophora confinnis was present, recognized as a potential vector of the epidemo/epizootic subtype. Mansonia indubitans, another recognized vector, was present at high frequency within dwellings. The exposed hamsters did not become infected. Conclusion. The child may have been infected in or near her home, although the epidemiologic cycle of the virus was not demonstrated within the village of Chingalé. Possibly, infected Culex mosquitoes of the subgenus Melanoconion carried the virus into the village from a neighboring habitat.

Original languageSpanish
Pages (from-to)234-244
Number of pages11
JournalBiomedica
Volume28
Issue number2
StatePublished - 2008

Fingerprint

Venezuelan Equine Encephalomyelitides
Culicidae
Viruses
Diptera
Trinidad and Tobago
Culex
Centers for Disease Control and Prevention (U.S.)
Cricetinae
Sterculiaceae
Venezuelan Equine Encephalitis Viruses
Colombia
Ecosystem
Animals
Light
Infection

Keywords

  • Arbovirus
  • Colombia
  • Culex
  • Encephalitis
  • Encephalitis virus
  • Venezuelan equine

ASJC Scopus subject areas

  • Medicine(all)
  • Biochemistry, Genetics and Molecular Biology(all)

Cite this

Mosquitos (Diptera : Culicidae) en el caserío de Chingalé, Santander, donde se registró un caso humano de encefalitis equina venezolana. / Ferro, Cristina; Olano, Víctor Alberto; Ahumada, Martha; Weaver, Scott.

In: Biomedica, Vol. 28, No. 2, 2008, p. 234-244.

Research output: Contribution to journalArticle

@article{a16b3ef8d0d24bbfa6fddec328da4c8b,
title = "Mosquitos (Diptera: Culicidae) en el caser{\'i}o de Chingal{\'e}, Santander, donde se registr{\'o} un caso humano de encefalitis equina venezolana",
abstract = "Introduction. The enzootic focus of subtype ID of Venezuelan equine encephalitis (VEE) virus in the Central Magdalena region (central Colombia) occasionally produces human cases. The report of a VEE infection in a three-year-old girl in the small village of Chingal{\'e}, municipality of Puerto Wilches, Santander, motivated this study. Objective. The village of Chingal{\'e} was evaluated as the probable site of infection. Materials and methods. In June 2005, mosquitoes were collected with CDC light traps in and outside of dwellings in the village. Trinidad traps were placed in nearby vegetation, and hamsters were used as sentinel animals near homes. Results. One hundred and seven samples, consisting of 14,423 mosquitoes of 35 species were collected. The relative abundance of incriminated vectors of subtype ID of VEE, Culex (Melanoconion) pedroi and Cx. (Mel.) ocossa, was generally low (<4{\%}), but both species were more frequent outside of dwellings than indoors. Cx. (Mel.) ocossa was collected in CDC traps and was more frequent indoors, whereas Cx. (Mel.) pedroi was found in the Trinidad traps. In addition, Psorophora confinnis was present, recognized as a potential vector of the epidemo/epizootic subtype. Mansonia indubitans, another recognized vector, was present at high frequency within dwellings. The exposed hamsters did not become infected. Conclusion. The child may have been infected in or near her home, although the epidemiologic cycle of the virus was not demonstrated within the village of Chingal{\'e}. Possibly, infected Culex mosquitoes of the subgenus Melanoconion carried the virus into the village from a neighboring habitat.",
keywords = "Arbovirus, Colombia, Culex, Encephalitis, Encephalitis virus, Venezuelan equine",
author = "Cristina Ferro and Olano, {V{\'i}ctor Alberto} and Martha Ahumada and Scott Weaver",
year = "2008",
language = "Spanish",
volume = "28",
pages = "234--244",
journal = "Biomedica",
issn = "0120-4157",
publisher = "Instituto Nacional de Salud",
number = "2",

}

TY - JOUR

T1 - Mosquitos (Diptera

T2 - Culicidae) en el caserío de Chingalé, Santander, donde se registró un caso humano de encefalitis equina venezolana

AU - Ferro, Cristina

AU - Olano, Víctor Alberto

AU - Ahumada, Martha

AU - Weaver, Scott

PY - 2008

Y1 - 2008

N2 - Introduction. The enzootic focus of subtype ID of Venezuelan equine encephalitis (VEE) virus in the Central Magdalena region (central Colombia) occasionally produces human cases. The report of a VEE infection in a three-year-old girl in the small village of Chingalé, municipality of Puerto Wilches, Santander, motivated this study. Objective. The village of Chingalé was evaluated as the probable site of infection. Materials and methods. In June 2005, mosquitoes were collected with CDC light traps in and outside of dwellings in the village. Trinidad traps were placed in nearby vegetation, and hamsters were used as sentinel animals near homes. Results. One hundred and seven samples, consisting of 14,423 mosquitoes of 35 species were collected. The relative abundance of incriminated vectors of subtype ID of VEE, Culex (Melanoconion) pedroi and Cx. (Mel.) ocossa, was generally low (<4%), but both species were more frequent outside of dwellings than indoors. Cx. (Mel.) ocossa was collected in CDC traps and was more frequent indoors, whereas Cx. (Mel.) pedroi was found in the Trinidad traps. In addition, Psorophora confinnis was present, recognized as a potential vector of the epidemo/epizootic subtype. Mansonia indubitans, another recognized vector, was present at high frequency within dwellings. The exposed hamsters did not become infected. Conclusion. The child may have been infected in or near her home, although the epidemiologic cycle of the virus was not demonstrated within the village of Chingalé. Possibly, infected Culex mosquitoes of the subgenus Melanoconion carried the virus into the village from a neighboring habitat.

AB - Introduction. The enzootic focus of subtype ID of Venezuelan equine encephalitis (VEE) virus in the Central Magdalena region (central Colombia) occasionally produces human cases. The report of a VEE infection in a three-year-old girl in the small village of Chingalé, municipality of Puerto Wilches, Santander, motivated this study. Objective. The village of Chingalé was evaluated as the probable site of infection. Materials and methods. In June 2005, mosquitoes were collected with CDC light traps in and outside of dwellings in the village. Trinidad traps were placed in nearby vegetation, and hamsters were used as sentinel animals near homes. Results. One hundred and seven samples, consisting of 14,423 mosquitoes of 35 species were collected. The relative abundance of incriminated vectors of subtype ID of VEE, Culex (Melanoconion) pedroi and Cx. (Mel.) ocossa, was generally low (<4%), but both species were more frequent outside of dwellings than indoors. Cx. (Mel.) ocossa was collected in CDC traps and was more frequent indoors, whereas Cx. (Mel.) pedroi was found in the Trinidad traps. In addition, Psorophora confinnis was present, recognized as a potential vector of the epidemo/epizootic subtype. Mansonia indubitans, another recognized vector, was present at high frequency within dwellings. The exposed hamsters did not become infected. Conclusion. The child may have been infected in or near her home, although the epidemiologic cycle of the virus was not demonstrated within the village of Chingalé. Possibly, infected Culex mosquitoes of the subgenus Melanoconion carried the virus into the village from a neighboring habitat.

KW - Arbovirus

KW - Colombia

KW - Culex

KW - Encephalitis

KW - Encephalitis virus

KW - Venezuelan equine

UR - http://www.scopus.com/inward/record.url?scp=51349111920&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=51349111920&partnerID=8YFLogxK

M3 - Article

VL - 28

SP - 234

EP - 244

JO - Biomedica

JF - Biomedica

SN - 0120-4157

IS - 2

ER -