Survival dynamics of tick-borne encephalitis virus in Ixodes ricinus ticks.
Ticks Tick Borne Dis
; 5(6): 962-9, 2014 Oct.
Article
em En
| MEDLINE
| ID: mdl-25131151
ABSTRACT
Biotic factors contributing to the survival of tick-borne viruses in nature are poorly understood. Using tick-borne encephalitis virus (TBEV) and its principal European vector, Ixodes ricinus, we examined the relative roles of salivary gland infection, co-feeding transmission, and moulting in virus survival. Virus titres in the salivary glands increased after blood-feeding in a time- and dose-dependent manner. This was observed in ticks infected by inoculation but not in ticks infected by the natural route of co-feeding. Amplification of infection prevalence occurred via co-feeding. However, when larvae or nymphs subsequently moulted, the infection prevalence dramatically declined although this was not observed when ticks were infected by inoculation. Trans-stadial survival is a hitherto overlooked parameter that may contribute to the low incidence of TBEV infection in field-collected I. ricinus ticks.
Palavras-chave
Texto completo:
1
Coleções:
01-internacional
Contexto em Saúde:
4_TD
Base de dados:
MEDLINE
Assunto principal:
Vetores Aracnídeos
/
Ixodes
/
Encefalite Transmitida por Carrapatos
/
Vírus da Encefalite Transmitidos por Carrapatos
Tipo de estudo:
Incidence_studies
/
Prevalence_studies
/
Prognostic_studies
/
Risk_factors_studies
Limite:
Animals
Idioma:
En
Revista:
Ticks Tick Borne Dis
Ano de publicação:
2014
Tipo de documento:
Article