*3.1.1 Identification of microorganisms and mechanism of resistance to carbapenems*

The proportion of biological samples containing carbapenem-resistant microorganisms was 5.97%. This proportion is distributed between urine samples, which represent 2.20%, osteitis pus 0.94%, wound pus 0.63%, stool 1.26% and blood 0.94%. The presence of carbapenem-resistant microorganisms was not observed in urethral and vaginal swabs. The percentage of samples that did not contain carbapenemresistant microorganisms was 94.03%. This frequency was distributed among urine samples 36.48%, osteitis pus 0.63%, wound pus 3.46%, urethral 2.83%, vaginal 22.33%, stool 20.75% and blood 7.55% (**Table 2**).

The species of enterobacteria responsible for carbapenem resistance in biological samples are variously distributed. Urine samples contain 36.84% of carbapenemresistant microorganisms. This percentage is distributed between the species


#### **Table 2.**

*Frequency of biological samples with and without carbapenem-resistant Enterobacteriaceae.*
