Vertical transmission of dengue viruses by strains of Aedes albopictus recently introduced into Brazil.
J Am Mosq Control Assoc
; 6(2): 251-3, 1990 Jun.
Article
em En
| MEDLINE
| ID: mdl-2370532
Three strains of Aedes albopictus from Brazil were examined for their ability to vertically transmit dengue 1 (DEN-1) and dengue 4 (DEN-4) viruses. Parental females were uniformly infected by parenteral inoculation of virus, and 8,121 F1 progeny from DEN-1 and DEN-4 infected mothers were pooled in lots of approximately 50 and tested for virus. Seven of 60 pools were positive for DEN-1 virus, and 1 of 121 pools was positive for DEN-4 virus. In DEN-1 assays, the minimum infection rate (MIR) for larvae (2 pools tested) was 1:84. Among positive cohorts of adults, pooled by sex and by geographic strain of mosquito, the MIR ranged from 1:193 to 1:626 for males and from 1:187 to 1:311 for females. Only a single pool of adult females was positive for DEN-4 virus (MIR 1:1022 for an adult female cohort from Santa Teresa). These results indicate that Brazilian Ae. albopictus have the potential to play a role in the maintenance of dengue viruses in nature.
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Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Aedes
/
Vírus da Dengue
/
Insetos Vetores
Limite:
Animals
País/Região como assunto:
America do sul
/
Brasil
Idioma:
En
Revista:
J Am Mosq Control Assoc
Assunto da revista:
MEDICINA TROPICAL
Ano de publicação:
1990
Tipo de documento:
Article
País de publicação:
Estados Unidos