Human Bordetella bronchiseptica infection related to contact with infected animals: persistence of bacteria in host.
AUTOR(ES)
Gueirard, P
RESUMO
Within a period of 2 1/2 years, Bordetella bronchiseptica was isolated four times from a 79-year-old woman with bronchopneumonia. We have demonstrated by pulsed-field gel electrophoresis that this infection was related to contact with infected rabbits. The initial human B. bronchiseptica isolate had a phenotype characteristic of usual B. bronchiseptica clinical isolates; it produced toxin and adhesins, such as adenylate cyclase-hemolysin, filamentous hemagglutinin, and pertactin, and was able to induce lethality in a murine respiratory model. By contrast, although the three successive human isolates produced adhesins, they did not express adenylate cyclase-hemolysin and were unable to induce lethality. This implies that adenylate cyclase-hemolysin is required to induce lethality. We suggest that B. bronchiseptica may persist in the host, with expression of adenylate cyclase-hemolysin being essential for the initiation of infection and expression of adhesins being essential for persistence.
ACESSO AO ARTIGO
http://www.pubmedcentral.nih.gov/articlerender.fcgi?artid=228324Documentos Relacionados
- Human infections associated with Bordetella bronchiseptica.
- Bartonella Infection in Animals: Carriership, Reservoir Potential, Pathogenicity, and Zoonotic Potential for Human Infection
- Clonal diversity and host distribution in Bordetella bronchiseptica.
- Infected Branchial Cleft Cyst Due to Bordetella bronchiseptica in an Immunocompetent Patient
- Mycobacterium thermoresistibile infection in an immunocompromised host.