Extended transmission of two H5/H7 low pathogenic avian influenza viruses in chickens.
Epidemiol Infect
; 143(4): 781-90, 2015 Mar.
Article
em En
| MEDLINE
| ID: mdl-24924291
ABSTRACT
Transmission experiments are useful for investigating the mechanisms of low pathogenic notifiable avian influenza virus (LPNAI) transmission. In this study, the hypothesis that inoculation-infected chickens are more infectious than contact-infected chickens was tested. To this end, extended transmission experiments with one H5N2 and one H7N1 LPAIV which had previously been characterized in a series of standard transmission experiments were conducted in specific pathogen-free (SPF) chickens. For the H5N2 LPAIV, the infectivity of contact-infected chickens was similar to the infectivity of inoculated chickens. Despite results from a previous study suggesting the H7N1 LPAIV strain to be similarly infectious to SPF chickens as the H5N2 LPAIV strain, the acquisition of contact-infected chickens proved more difficult for H7N1 LPAIV. It was assumed that this might have been a consequence of the length and timing of the exposure period. In conclusion, for LPNAIVs that first seemed equally infectious, short-term transmissibility may vary considerably.
Palavras-chave
Texto completo:
1
Base de dados:
MEDLINE
Assunto principal:
Galinhas
/
Vírus da Influenza A Subtipo H5N2
/
Vírus da Influenza A Subtipo H7N1
/
Influenza Aviária
Limite:
Animals
Idioma:
En
Revista:
Epidemiol Infect
Assunto da revista:
DOENCAS TRANSMISSIVEIS
/
EPIDEMIOLOGIA
Ano de publicação:
2015
Tipo de documento:
Article
País de afiliação:
Bélgica