Abstract
Methods and their evaluation are described for the routine characterisation of Haemophilus spp isolates using a test for dependence on V factor and a test for the conversion of delta-amino-laevulinic acid (ALA) to porphyrin in which the ALA is incorporated into a solid medium. A method is also described whereby the difference in the size of the inhibition zones around discs of ampicillin and of amoxycillin/clavulanate can be used to detect the production of beta-lactamase.
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Selected References
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- Kilian M. A rapid method for the differentiation of Haemophilus strains. The porphyrin test;. Acta Pathol Microbiol Scand B Microbiol Immunol. 1974 Dec;82(6):835–842. doi: 10.1111/j.1699-0463.1974.tb02381.x. [DOI] [PubMed] [Google Scholar]
- Kilian M. A taxonomic study of the genus Haemophilus, with the proposal of a new species. J Gen Microbiol. 1976 Mar;93(1):9–62. doi: 10.1099/00221287-93-1-9. [DOI] [PubMed] [Google Scholar]
- O'Callaghan C. H., Morris A., Kirby S. M., Shingler A. H. Novel method for detection of beta-lactamases by using a chromogenic cephalosporin substrate. Antimicrob Agents Chemother. 1972 Apr;1(4):283–288. doi: 10.1128/aac.1.4.283. [DOI] [PMC free article] [PubMed] [Google Scholar]