Abstract:
:A total of 2401 isolates of Haemophilus parainfluenzae was isolated from respiratory secretions of 36 healthy adults and 128 patients with chronic bronchitis over a period of 1 year. The isolates were allocated to eight biotypes, by their production of indole, urease and ornithine decarboxylase. Biotypes I and II constituted most of the isolates of H. parainfluenzae from the oropharynx of controls (75%) and chronic bronchitics (c. 90%). Among the patients, there was no difference in the isolation rate between oropharyngeal swabs and sputum specimens. Biotypes III, IV, VI, VII and VIII were isolated less frequently, as was a new taxon defined here as biotype V which does not produce indole, urease or ornithine decarboxylase. Biotype III was isolated significantly less frequently from cases of chronic bronchitis than from controls, whereas biotype II was isolated somewhat more frequently from the patients, especially during acute episodes.
journal_name
J Med Microbioljournal_title
Journal of medical microbiologyauthors
Taylor DC,Cripps AW,Clancy RL,Murree-Allen K,Hensley MJ,Saunders NA,Sutherland DCdoi
10.1099/00222615-36-4-279keywords:
subject
Has Abstractpub_date
1992-04-01 00:00:00pages
279-82issue
4eissn
0022-2615issn
1473-5644journal_volume
36pub_type
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