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  • Title: Epizootiological studies of Salmonella typhimurium infection in guinea pigs.
    Author: Iijima OT, Saito M, Nakayama K, Kobayashi S, Matsuno K, Nakagawa M.
    Journal: Jikken Dobutsu; 1987 Jan; 36(1):39-49. PubMed ID: 3545857.
    Abstract:
    In two natural outbreaks of S. typhimurium infection in guinea pigs, frequent isolations of the organism from the conjunctiva and cervical lymph nodes and high incidences of the conjunctivitis and abscess formation in the cervical lymph nodes were shown, suggesting more importance of the conjunctiva as infection route than oral route. These features in salmonellosis of guinea pigs were tried to reproduce in experimental infections by conjunctival and oral inoculations of 10(2) and 10(6) cells of 4 different strains of S. typhimurium and also by contact infection simulating natural conditions. As the results, it was demonstrated that guinea pigs were more susceptible to the conjunctival infection than the oral infection, because higher infection rates and more frequent incidence of abscess formation in the cervical lymph nodes as well as conjunctivitis were produced by the conjunctival inoculation than the oral inoculation of the organism. Main localization sites of the organism were the cervical lymph nodes, conjunctiva and upper respiratory tract in conjunctivally inoculated guinea pigs but more widely distributed in orally infected ones. These findings were common in animals infected with 4 different strains of S. typhimurium and also in contact infection. Thus the conjunctiva was regarded as an important route of S. typhimurium in guinea pigs.
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