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  • Title: [The reciprocal influence of Escherichia coli and Salmonella bacteria in a mixed infection of Ornithodoros papillipes Birula ticks].
    Author: Podboronov VM, Bondarenko VM, Grishin VP.
    Journal: Med Parazitol (Mosk); 2000; (3):32-5. PubMed ID: 10981409.
    Abstract:
    The paper presents and analyzes the results of experiments on the Escherichia coli-Salmonella relationships in combined infection of Ornithodoros papillipes ticks. The findings have led to the following conclusions. The body of hungry adult O. papillipes ticks can retain the pathogen of Salmonella infection for a month. This model object is also favourable for avirulent E. coli strain persistent in the body's cavity both alone and in combination with Salmonella typhimurium strain in a 1:1 ratio. Binary carriage in hungry Ornithodoros papillipes ticks revealed that the ticks associated with Salmonella typhimurium and E. coli 083 mcl + lyz No 225, microcine and lysozyme producers, are freed of pathogenic bacteria during 24 hours. The initial bacteria E. coli 083 mcl also suppress salmonellae; however, their elimination occurs much later--in 5 days. Calculating the correlation between the pairs (S. typhi and E. coli) has revealed a linear functional relationship of the rate of E. coli growth to S. typhimurium suppression.
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