title: The frequency of resistance to erythromycin in group A streptococci in Ankara.
abstract: The frequency of resistance to erythromycin of group A beta-haemolytic streptococci in the last 7 years was determined in three medical centres in Ankara. While all group A beta-haemolytic streptococci strains were susceptible to penicillin, a gradual increase in resistance to erythromycin until 1992 was observed. However, a substantial increase in erythromycin resistance occurred in 1993 when newer macrolides became available and were widely used in the latter part of 1992.
  
  
  CONCLUSIONS
  The data show that frequent testing for resistance to erythromycin of group A beta-haemolytic streptococci is required for the use of this antibiotic in our country.
authors.affiliation: Department of Paediatrics, Gülhane Military Medical Academy, Etlik, Ankara, Turkey.
authors.forename: A E
authors.initials: AE
authors.lastname: Kürekçi
authors.forename: M
authors.initials: M
authors.lastname: Baysallar
authors.forename: A
authors.initials: A
authors.lastname: Karaarslan
authors.forename: G
authors.initials: G
authors.lastname: Emekdaş
authors.forename: V
authors.initials: V
authors.lastname: Köseoğlu
authors.forename: R
authors.initials: R
authors.lastname: Akin
authors.forename: O
authors.initials: O
authors.lastname: Ozcan
mesh_terms: D000900:Anti-Bacterial Agents / Q000494:pharmacology*; D016009:Chi-Square Distribution; D004352:Drug Resistance, Microbial; D004917:Erythromycin / Q000494:pharmacology*; D006801:Humans; D013290:Streptococcal Infections / Q000188:drug therapy / Q000453:epidemiology / Q000382:microbiology*; D013291:Streptococcus / Q000187:drug effects*; D014421:Turkey / Q000453:epidemiology
chemical_list: D000900:Anti-Bacterial Agents; D004917:Erythromycin