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. 1977 Jun;5(6):640–649. doi: 10.1128/jcm.5.6.640-649.1977

Serological Typing of Pseudomonas aeruginosa: Use of Commerical Antisera and Live Antigens

Charles D Brokopp a,1, Rafael Gomez-Lus b, J J Farmer III *
PMCID: PMC274671  PMID: 407246

Abstract

A practical slide agglutination test, with commercial antisera (Difco) and live antigens (antigens of live bacteria) taken directly from 24-h antimicrobial susceptibility plates, has been established for serotyping Pseudomonas aeruginosa. Until recently, the lack of both a standard antigenic scheme and a source of commercial antisera has made serological typing of this organism impractical. A simplified procedure with 17 unabsorbed antisera and live antigens prepared from materials readily available in most clinical microbiology laboratories makes epidemiological typing of this organism possible in hospital laboratories. The distribution of each serotype examined in this study was determined by using 425 consecutive patient isolates from six different hospitals. The distribution of O antigen groups (live antigen) was as follows: O1, 11.5%; O2, 1.6%; O3, 3.8%; O4, 7.8%; O5, 4.2% O6, 27.1%; O7,8, 5.9%; O9, 6.8%; O10, 2.4%; O11, 8.2%; O12 through O17, each less than 1%. Ten and six-tenths percent of the above agglutinated in two antisera, 3.3% agglutinated in more than two antisera, and 5.2% did not agglutinate in any antisera. A comparison of live and heated antigens shows that 93.2% were typable with the live antigen, and 94.5% were typable with the heated antigen. When both antigens were used, we typed 96.3% of 725 isolates. The reproductibility and specificity of the serological procedure were examined. We recommend using the live antigen for routine serological typing in clinical microbiology laboratories for “in house” epidemiology and reserving the heated antigen for reference and research typing (and for those few cases where results cannot be obtained using the live antigen). The application of serotyping in the study of outbreaks of P. aeruginosa is also presented.

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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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