BELKENADIL, AsmaCHENNANI, ManelBOUTCHICHE, FarahBelahcene, Miloud2024-12-092024-12-092023http://dspace.univ-temouchent.edu.dz/handle/123456789/5682Nosocomial infections constitute a scourge of public health. They can be directly related to hospital care or occur outside of any medical act; their origin can be endogenous or exogenous. The main objective of this study was to identify the bacteria responsible for nosocomial infections by isolating them from various sources such as instruments, patients, air in the operating room and internal medicine, surgery and maternity departments. Different methods have been used to isolate, purify and pre-identify germs. The study focused on phenotypic and microscopic characteristics, standard biochemical tests and antibiogram. The bacteriological results revealed a significant diversity of species, among these species, Staphylococcus aureus, Staphylococcus epidermidis, Bacillus spp, Pseudomonas spp, Escherichia coli, proteus mirabilis. The Staphylococcus aureus species is found to be the most common isolate. The results of the antibiogram revealed a variability in the response of the bacterial germs to the antibiotics tested, in particular to the antibiotics AMC, AZM, AML,CFM, E, GEN certain isolates proved to be sensitive while others were shown to be resistantfrInfections nosocomiales, Staphylococcus Spp, Pseudomonas Spp, Bacillus Spp, Proteus Spp, Antibiogramme.Thesis