Considering the recent emergence of "hybrid biotype" and "El Tor variant", we propose to redefine the biotyping scheme for Vibrio cholerae O1 serogroup. The existing biotyping scheme has limitations and causes confusion as many of the hybrid biotype and El Tor variant strains have phenotypic and genetic changes. A revised biotyping scheme will play a significant role to understand the ecology, ...

A biotyping scheme for Enterobacter cloacae is proposed. Tests with seven substrates that gave reliable, reproducible results with 110 isolates of E cloacae formed the basis of the biotyping scheme which would allow recognition of 128 potential biotypes.

A six test biotyping system comprising fermentation of dulcitol, sorbose, raffinose, and 5 ketogluconate, motility and production of beta-haemolysis was used to obtain biotype profiles for 514 strains of Escherichia coli isolated from the urinary tract. This profile was suffixed to the API-20E code, recorded when the strains were originally identified. An expanded and reliable biotyping system ...

The accuracy of the Cronobacter biotyping scheme was compared with the 7-loci multilocus sequence typing scheme. Biotyping did not reliably assign species level identification, as only half (17/31) of the biotype variants were unique to any of the seven Cronobacter species and the remaining biotypes were shared across the genus.

PURPOSE In order to investigate the suitability of Streptococcus mutans species biotyping by measuring the activity of selected enzymes from a commercial test, criteria were established for biotyping clinical strains from children with dental caries. In addition, the relationships between the selected biotypes, sensitivity to commonly used antibiotics, and early childhood caries were determined...

A biotyping scheme has been developed which utilises 12 tests, including growth at 28 degrees C, hippurate hydrolysis, and 10 resistotyping tests. These tests are arranged in groups of three, and by assigning a numerical value to each positive test a four figure code is produced for each strain. The order of the tests is such that campylobacters are both speciated and biotyped . This scheme rec...