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Infect Immun. 1996 Oct;64(10):4373-7.

Development of a germfree mouse model of Vibrio cholerae infection.

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  • 1Infectious Disease Unit, Massachusetts General Hospital, Boston 02114, USA.


A mouse model of Vibrio cholerae infection was successfully developed with germfree mice. Three- to four-week-old germfree mice were orally inoculated with strains of V. cholerae to be tested and then moved to normal housing after inoculation. Stool culture, measurement of serum vibriocidal antibody titers, and determination of immune responses to the cholera toxin B subunit demonstrated that germfree mice are readily colonized by V cholerae and develop systemic and mucosal immune responses to antigens expressed by these organisms. Immune responses to the B subunit of Shiga toxin 1, which was expressed from a V. cholerae vaccine vector, were less pronounced. This model should be valuable for studying immune responses to V. cholerae infection and immunization, including responses to heterologous antigens expressed by cholera vector strains.

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