Argentinian collaborative study on prevalence of erythromycin and penicillin susceptibility in Streptococcus pyogenes. The Argentinian Streptococcus Study Group

Autor: H A, Lopardo, M E, Venuta, P, Vidal, L, Rosaenz, C, Corthey, A, Farinati, E, Couto, B, Sarachian, M, Sparo, S, Kaufman, C A, De Mier, L, Gubbay, V, Scilingo, P, Villaverde
Rok vydání: 1997
Předmět:
Zdroj: Diagnostic microbiology and infectious disease. 29(1)
ISSN: 0732-8893
Popis: Two monthly studies on the prevalence of penicillin and erythromycin susceptibility of Streptococcus pyogenes were performed in May and October of 1994 in Argentina. A total of 58 centers from 27 cities participated in these studies. A total of 1072 isolates were tested by a diffusion method, although 595 isolates were tested both by the diffusion and an agar dilution method (n = 1767 isolates). No penicillin-resistant streptococci were found in our study (MIC100 = 0.03 microgram/ml). Only four isolates were confirmed as erythromycin resistant S. pyogenes (prevalence 0.14 and 0.28% in May and October 1994, respectively). Resistance in three isolates was due to an inducible mechanism, although in one strain a different phenotype was observed.
Databáze: OpenAIRE