Your browser doesn't support javascript.
loading
Natural transovarial transmission of dengue virus 4 in Aedes aegypti from Cuiabá, State of Mato Grosso, Brazil
Cruz, Lucinéia Claudia de Toni Aquino da; Serra, Otacília Pereira; Leal-Santos, Fábio Alexandre; Ribeiro, Ana Lucia Maria; Slhessarenko, Renata Dezengrini; Santos, Marina Atanaka dos.
Afiliación
  • Cruz, Lucinéia Claudia de Toni Aquino da; Universidade Federal de Mato Grosso. Instituto de Saúde Coletiva. Cuiabá. BR
  • Serra, Otacília Pereira; Universidade Federal de Mato Grosso. Instituto de Saúde Coletiva. Cuiabá. BR
  • Leal-Santos, Fábio Alexandre; Universidade Federal de Mato Grosso. Instituto de Saúde Coletiva. Cuiabá. BR
  • Ribeiro, Ana Lucia Maria; Universidade Federal de Mato Grosso. Instituto de Saúde Coletiva. Cuiabá. BR
  • Slhessarenko, Renata Dezengrini; Universidade Federal de Mato Grosso. Instituto de Saúde Coletiva. Cuiabá. BR
  • Santos, Marina Atanaka dos; Universidade Federal de Mato Grosso. Instituto de Saúde Coletiva. Cuiabá. BR
Rev. Soc. Bras. Med. Trop ; 48(1): 18-25, jan-feb/2015. tab, graf
Artículo en Inglés | LILACS | ID: lil-742970
Biblioteca responsable: BR1.1
ABSTRACT

INTRODUCTION:

Dengue is the most prevalent arboviral disease in tropical areas. In Mato Grosso, outbreaks are reported every year, but studies on dengue in this state are scarce.

METHODS:

Natural transovarial infection of Aedes aegypti by a flavivirus was investigated in the Jardim Industriário neighborhood of Cuiabá, Mato Grosso. Eggs were collected with ovitraps during the dry, intermediate, and rainy seasons of 2012. After the eggs hatched and the larvae developed to adulthood, mosquitoes (n = 758) were identified and allocated to pools of 1-10 specimens according to the collection location, sex, and climatic period. After RNA extraction, multiplex semi-nested RT-PCR was performed to detect the four dengue virus (DENV) serotypes, yellow fever virus, West Nile virus and Saint Louis encephalitis virus.

RESULTS:

DENV-4 was the only flavivirus detected, and it was found in 8/50 pools (16.0%). Three of the positive pools contained females, and five contained males. Their nucleotide sequences presented 96-100% similarity with DENV-4 genotype II strains from Manaus, Amazonas. The minimum infection rate was 10.5 per 1000 specimens, and the maximum likelihood estimator of the infection rate was 11.6 (95% confidence interval 4.8; 23.3).

CONCLUSIONS:

This study provides the first evidence of natural transovarial infection by DENV-4 in Ae. Aegypti in Mato Grosso, suggesting that this type of infection might serve as a mechanism of virus maintenance during interepidemic periods in Cuiabá, a city where dengue epidemics are reported every year. These results emphasize the need for efficient vector population control measures to prevent arbovirus outbreaks in the state. .
Asunto(s)


Texto completo: Disponible Colección: Bases de datos internacionales Contexto en salud: ODS3 - Salud y Bienestar / Enfermedades Desatendidas Problema de salud: Meta 3.3: Poner fin a las enfermedades desatendidas y detener enfermedades transmisibles / Dengue / Enfermedades Desatendidas Base de datos: LILACS Asunto principal: Biosíntesis de Proteínas / Cinesinas Límite: Animales / Humanos País/Región como asunto: America del Sur / Brasil Idioma: Inglés Revista: Rev. Soc. Bras. Med. Trop Asunto de la revista: Medicina Tropical Año: 2015 Tipo del documento: Artículo País de afiliación: Brasil Institución/País de afiliación: Universidade Federal de Mato Grosso/BR

Texto completo: Disponible Colección: Bases de datos internacionales Contexto en salud: ODS3 - Salud y Bienestar / Enfermedades Desatendidas Problema de salud: Meta 3.3: Poner fin a las enfermedades desatendidas y detener enfermedades transmisibles / Dengue / Enfermedades Desatendidas Base de datos: LILACS Asunto principal: Biosíntesis de Proteínas / Cinesinas Límite: Animales / Humanos País/Región como asunto: America del Sur / Brasil Idioma: Inglés Revista: Rev. Soc. Bras. Med. Trop Asunto de la revista: Medicina Tropical Año: 2015 Tipo del documento: Artículo País de afiliación: Brasil Institución/País de afiliación: Universidade Federal de Mato Grosso/BR
...