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Table 1 Semi-quantitative approach for count of Salmonella-colonies

From: Prime-boost vaccination with attenuated Salmonella Typhimurium ΔznuABC and inactivated Salmonella Choleraesuis is protective against Salmonella Choleraesuis challenge infection in piglets

Ten-fold dilution positive results express in
LOG10 CFU/g
Negative 0 Negative also after enrichment
1:101 1 1–10 CFU/g
1:102 2 11–100 CFU/g
1: 103 3 101–1000 CFU/g
1: 104 4 1001–10,000 CFU/g
1: 105 5 10,001–100,000 CFU/g
1: 106 6 100,001–1,000,000 CFU/g
1: 107 7 1,000,001–10,000,000 CFU/g
  1. Results of positive ten-fold dilution are expressed as LOG10 and correspond to a range of CFU/g. They represent a semi-quantitative approach to establish concentration in a sample