Host condition and individual risk of cowpox virus infection in natural animal populations: cause or effect?
Epidemiol Infect
; 137(9): 1295-301, 2009 Sep.
Article
em En
| MEDLINE
| ID: mdl-19144246
ABSTRACT
Recent studies have provided evidence that endemic pathogens may affect dynamics in animals. However, such studies have not typically considered that infected individuals might have a preceding underlying poor condition. We examined whether individuals in poor condition are more likely to become infected by an endemic pathogen, using as a system the dynamics of cowpox virus in field voles. With data from monthly sampled vole populations, a nested case-control study evaluated whether susceptible individuals with poorer condition had higher probabilities of contracting cowpox. The influence of condition was found to be considerable, especially for males. At times when a susceptible male with good body condition had a relatively low probability of becoming infected, a susceptible male with poor body condition was twice as likely to contract cowpox; if this male was also anaemic, the chances were almost quadrupled. We discuss the care needed when interpreting the findings of wildlife disease studies.
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Varíola Bovina
/
Arvicolinae
/
Doenças Endêmicas
/
Anemia
Tipo de estudo:
Etiology_studies
/
Observational_studies
/
Risk_factors_studies
/
Screening_studies
Limite:
Animals
País/Região como assunto:
Europa
Idioma:
En
Revista:
Epidemiol Infect
Assunto da revista:
DOENCAS TRANSMISSIVEIS
/
EPIDEMIOLOGIA
Ano de publicação:
2009
Tipo de documento:
Article
País de afiliação:
Reino Unido