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Epidemiological typing of pseudomonas aeruginosa aeruginocin typing of pseudomonas aeruginosa isolated from heterogeneous clinical material and its comparison with gillies and govan pyocin typing method


Indian Journal of Medical Research 63(10): 1388-1401
Epidemiological typing of pseudomonas aeruginosa aeruginocin typing of pseudomonas aeruginosa isolated from heterogeneous clinical material and its comparison with gillies and govan pyocin typing method
Aeruginocin typing of 1000 strains of P. aeruginosa isolated from heterogenous [human] clinical material is reported. Some strains of P. aeruginosa (183) were non-typable; the remaining 817 strains produced 122 inhibition patterns. Some strains (589) were classifiable into different aeruginocin types and the remaining 228 strains were grouped as unclassifiable. Some typable strains (301) produced 108 patterns (93 unclassifiable and 15 classifiable) each represented by < 10 strains. The commonest aeruginocin type encountered was type 1 followed by types F and A. Some strains of P. aeruginosa (500) of 1000 strains typed by aeruginocin were also typed by the pyocin typing method of Gillies and Govan (1966), including 183 (18.3%) strains non-typable by the aeruginocin method. The pyocin typing method enabled 4.4% to be grouped into Gillies and Govan pyocin types; 20 (4.0%) of the strains typable by the aeruginocin method could not be typed by the pyocin method. The overall percentage of non-typable strains by either method was similar. Of the remaining 317 strains belonging to different aeruginocin types only 134 could be grouped into 13 Gillies and Govan pyocin type and the remaining produced 55 unclassifiable inhibition patterns. Both aeruginocin types and pyocin types represented by a reasonable number of strains were further divisible by other methods indicating the heterogenicity of the types. The unclassifiable and non-typable strains seem more heterogenous than defined types. The aeruginocin typing method for epidemiological typing of P. aeruginosa is more suitable for typing strains isolated in India.


Accession: 005375727



Related references

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