Intestinal immunity to poliovirus develops only after repeated infections in monkeys

Selvakumar, R. ; Jacob John, T. (1989) Intestinal immunity to poliovirus develops only after repeated infections in monkeys Journal of Medical Virology, 27 (2). pp. 112-116. ISSN 0146-6615

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Official URL: http://onlinelibrary.wiley.com/doi/10.1002/jmv.189...

Related URL: http://dx.doi.org/10.1002/jmv.1890270208

Abstract

To establish gut immunity in monkeys to poliovirus type 1, we fed four juvenile bonnet monkeys (Macaca radiata) with 100 median infectious doses of the Mahoney strain of virus. The duration of viral shedding in the throat and faeces and the titre of virus in faeces were measured. Eighteen days after the last monkey stopped shedding virus, they were inoculated once again with the same amount of virus. All monkeys got re-infected the duration and titres of viral shedding were very similar to those after the first inoculation. This was interpreted to mean a lack of effective gut immunity. After a third inoculation the re-infection was of very short duration, and viral titres were one log10 less, indicating a high degree of gut immunity. These results suggest that one infection by poliovirus does not induce gut immunity; at least two infections are necessary to induce it. Even after two consecutive infections, immunity was not sufficient to prevent re-infection.

Item Type:Article
Source:Copyright of this article belongs to John Wiley and Sons, Inc.
Keywords:Gut Immunity; Macaca Radiata; Oral Poliovirus Vaccine; Wild Poliovirus Infection
ID Code:29577
Deposited On:20 Dec 2010 08:01
Last Modified:03 Jun 2011 11:47

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