Medicinski vjesnik, Vol. 21 No. (4), 1989.
Professional paper
The analysis of beta-hemolytic streptococci isolated from the throath swabs
Mirna Petanović
Marica Miletić-Medved
Abstract
The authors analyzed 261 streptococci isolated from the throat swabs of 154 individuals under the health care of the Department of Epidemiology and 107 patients treated at other units of the Medical Centre of Slavonski Brod. All isolated genera were tested for the increase in glucose broth, for esculin hydrolysis and sensitivity to bacitracin and then grouped by the Slidex Strepto-Kit method. By this method, in 218 streptococci (83.5 %) the group-specific polysaccharide antigen was not identified (»viridans« streptococci), whereas in 43 beta-hemolytic streptococci (BHS) (16.5 %) the groups A, B , C , D , F or G were identified, respectively. The group A BHS was identified in one case only (2.3 %). The non-group A BHS prevailed with 42 cases (97.6 %), classified as follows: 32 cases in group C (74.4 %), 6 cases in group F (14 %), 2 cases in group G (4.7 %) and one case (2.3 %) in groups B and D, respectively. No significant difference was found between the two groups of probands, i.e. 12.9 % of the probands from the one (20/154) and 20.5 % from the other group (22/107) had non-group A BHS (X2 = 2.93, P > 0.01), whereas group C BHS were found in 11.6 % (18/154) and 13.1 % (14/107) of the probands, respectively (X2 = 0.14, P > 0.01). It was found that the grouping of beta-hemolytic streptococci is a necessity, since out of the total number of 261 streptococci, 67 (25.7 %) were identified as Streptococcus Pyogenes (A BHS) as well as 17 (53.1 %) out of 32 group C streptococci, which is significant for the treatment of both groups of patients.
Keywords
streptococcus; beta-hemolytic; epidemiology; throat swab
Hrčak ID:
196958
URI
Publication date:
1.12.1989.
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