Isolation of Some potentially Pathogenic Bacteria From the Upper Respiratory System Khartoum H ' patients

Abstract

00 sample from throat and nasal cavity were cultured for aerobic bacteria. Staphylococcus aureus, Streptococcus pneumorziae, Streptococcus viridans, E.coli and Klebsiella pneumoniae were isolated from nasal cavities and throat specimens of healthy medical staff, patients and co- patients who_ were not suffering from symptoms of respiratory disorders;the presence» of these organisms indicated acquired and nosocomial transmission within hospital environment as those are not normal microbiota of the throat. Isolation of pure isolates as 56.9% from volunteers and 43.1% were mixed isolates .The aerobic growths were identified as Gram- positive bacteria which were further identified as Staphylococcus aureus (21.1%), Staphylococcus epidermidis (36.8%), Staphylococcus saprophyticus(14.0%), Streptococcus pneumom'ae(5.3%), Streptococcus viridans (19.3%) and Corynebacterium spp (3.5%). Gram-negative bacteria were identified as E.coli (42.9%) and Klebsiella pneumoniae (53.1%). Nasal specimens revealed isolation of Staphylococcus aureus, E. coli, Klebsiella przeumoniae and Pseudomorzas aeruginosa which are not among normal flora of the nasal cavitis and considered as potential pathogens. The aerobic growths were