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. 1976 Aug;77(1):105–111. doi: 10.1017/s0022172400055571

Salmonella in the American cockroach: evaluation of vector potential through dosed feeding experiments.

M J Klowden, B Greenberg
PMCID: PMC2129709  PMID: 789761

Abstract

Restrained American cockroaches, Periplaneta americana L., were fed graded doses of Salmonella typhimurium ranging from 1-6 X 10(3) to 2-0 X 10(6), and their faeces assayed daily for the pathogen. Only 4 specimens out of 117 demonstrated multiplication of salmonellas, which was unrelated to size of input. When data of persistence regardless of actual numbers were expressed as percentage Salmonella-positive faecal-days, and these transformed to probits, a graph of percentage-positive faecal-days versus log dose allowed a calculation of the CD 50, or contaminative dose required for 50% of the faecal-days to be infective. The CD 50 for this cockroach species was 1-4 X 10(6) Salmonella.

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

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