Antibiotic susceptibility of streptococcus pyogenes isolated from respiratory tract infections in dakar, senegal.
Group A Streptococcus (GAS) is one of the major causes of respiratory tract infections. The objectives of this study were to identify isolates of S. pyogenes obtained from respiratory tract infections, and to assess their susceptibility to several antibiotics. A total of 40 strains were isolated and their susceptibility to 17 antibiotics was tested using a standard disk diffusion method. The minimum inhibitory concentrations (MICs) were determined using the E-test. All isolates were sensitive to β-lactam antibiotics including penicillin, amoxicillin, and cephalosporins. Macrolides remain active with the exception of spiramycin, which showed reduced susceptibility. Out of the 40 isolates, 100% of the isolates were resistant to tetracycline. Interestingly, isolates were sensitive to chloramphenicol, teicoplanin, vancomycine, and levofloxacin, providing potential alternative choices of treatment against infections with S. pyogenes.
Laboratory of Bacteriology-Virology, Centre Hospitalier Universitaire Le Dantec, Cheikh Anta DIOP University, Dakar, Senegal.
Makhtar
M
Camara
Laboratory of Bacteriology-Virology, Centre Hospitalier Universitaire Le Dantec, Cheikh Anta DIOP University, Dakar, Senegal.
Assane
A
Dieng
Laboratory of Bacteriology-Virology, Centre Hospitalier Universitaire Le Dantec, Cheikh Anta DIOP University, Dakar, Senegal.
Cheikh Saad Bouh
CS
Boye
Streptococcus pyogenes; antibiotic susceptibility; respiratory tract infections