Abstract
The aim of this study was to determine the frequency and the antimicrobial susceptibility profileof Streptococcus spp. obtained from recurrent acute pharyngo-tonsillitis. For this study, tonsilsfrom 122 patients ranging from 3 to 38 years old (66 males and 56 females) were collected. Allpatients had a history of recurrent acute pharyngo-tonsillitis associated with tonsillar hypertrophyand were submitted for tonsillectomy at a teaching hospital. After isolation and identification,antimicrobial susceptibility tests were performed. A hundred and fifty one isolates of Streptococcusspp. were obtained from tonsils, consisting of 41.06% non-hemolytic Streptococcus viridans group,39.07% a-hemolytic Streptococcus viridans group, 7.30% Streptococcus of C, F or G groups, 5.30%?-hemolytic Streptococcus spp., 4.63% non-hemolytic Streptococcus spp., 1.32% a-hemolyticStreptococcus spp. and 1.32% group A ? hemolytic Streptococcus. Some of the isolates were resistantto beta-lactamic antibiotics. The study showed that components of the oropharynx microbiotapresented resistance to drugs commonly used to treat pharyngo-tonsillitis infections. Correctdiagnosis would improve treatment and could prevent recurrent infections.
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