Eleven-year surveillance of antibiotic resistance in Streptococcus pneumoniae in Casablanca (Morocco).

Objective: To analyze trends of antibiotic resistance rates in Streptococcus pneumoniae from 1998 to 2008 in Casablanca (Morocco).

Methods: The antibiotic resistance levels of 955 consecutive nonduplicate isolates were studied using E test and disc diffusion methods. Results were interpreted following Clinical and Laboratory Standards Institute guidelines (2005).