Bacteriological examination system

A bacteriological examination system for measuring drug sensitivities of at least one species of bacteria with respect to at least one drug with at least one drug fastness index, comprising:

• an in-hospital drug-sensitivity statistic database in which statistics of drug sensitivities of a plurality of bacterial species residing in a hospital towards a plurality of drugs are recorded;
• a regional drug-sensitivity statistic database in which statistics of drug sensitivities of the plurality of bacterial species residing in a limited region, where the hospital is located, towards the plurality of drugs are recorded;
• and
• a drug fastness index calculating unit for reading an average-per-sample drug sensitivity of the plurality of drug densities with respect to each bacterial species residing in hospital from said in-hospital drug-sensitivity database, for reading an average-per-sample drug sensitivity of the plurality of drug densities with respect to the same species of bacteria residing in a limited region from said regional drug-sensitivity database, for calculating for each species of bacteria a normalized value by dividing difference between the in-hospital average-per-sample drug sensitivity of the bacterial species and the regional average-per-sample drug sensitivity of the bacterial species by the regional average-per-sample drug sensitivity of the bacterial species, and for averaging respective values of the normalized value of said each bacterial species so as to derive a drug fastness index with respect to the drug.

A method for measuring drug sensitivities of at least one species of bacteria with respect to at least one drug, comprising:

• retrieving averaging information of a group which a sample to be tested for the bacteria belongs to;
• retrieving at least one drug-sensitivity statistic value corresponding to the retrieved averaging information from a drug-sensitivity statistic database which stores drug-sensitivity statistical values concerning the drug sensitivities of bacteria with respect to the drug based upon prior tests;
• determining an expected range of drug densities based upon the retrieved drug-sensitivity statistical value;
• and
• performing a plurality of drug sensitivity tests on the bacteria under a range of drug densities within the expected range.

A method for measuring drug sensitivities of at least one species of bacteria with respect to at least one drug with a drug fastness index, comprising:

• providing an in-hospital drug-sensitivity statistic database in which statistics of drug sensitivities of a plurality of bacterial species residing in a hospital towards a plurality of drugs are recorded;
• providing a regional drug-sensitivity statistic database in which statistics of drug sensitivities of the plurality of bacterial species residing in a limited region, where the hospital is located, towards the plurality of drugs are recorded;
• reading an average-per-sample drug sensitivity of the plurality of drug densities with respect to each bacterial species residing in hospital from said in-hospital drug-sensitivity database;
• reading an average-per-sample drug sensitivity of the plurality of drug densities with respect to the same species of bacteria residing in a limited region from said regional drug-sensitivity database;
• calculating for each species of bacteria a normalized value by dividing difference between the in-hospital average-per-sample drug sensitivity of the bacterial species and the regional average-per-sample drug sensitivity of the bacterial species by the regional average-per-sample drug sensitivity of the bacterial species;
• and
• averaging respective values of the normalized value of said each bacterial species so as to derive a drug fastness index with respect to the drug.