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Articles by Sanaa O. Yagoub
Total Records ( 6 ) for Sanaa O. Yagoub
  Sanaa O. Yagoub , Nazik E. Awadalla and Ibtisam E. M. El Zubeir2
  The most predominant bacterium in raw milk samples investigated during the present study was Staphylococcus aureus, 21 isolates ( 30%) . Moreover, Gram- negative bacteria identified as Citrobacter spp., 15 (21.43%) , Shigella spp., 14 (20%), E. coli, 10 isolates (14.28/%), Enterobacter spp.,9 (12.86%), and Salmonella spp., 1, (1.43%) . Staphylococcus aureus count in the milk collected from the factory was (6?103 –1.2?106). Salmonella spp. count was 5?104 in the milk collected from the factory. Shigella spp., Enterobacter spp. and Citrobacter spp. were predominant in the milk collected from the factory (7?105 –1.4?106). On the other hand, the E. coli count was higher in the milk collected from the collection points (7?104 -7.5?106). In the present study, most of the bacteria isolated from the raw milk showed a wide range of multiple resistance to the tested antimicrobial agents. Penicillin, clindamycin, amoxicillin and ampicillin showed the highest resistance. Chloramphenicol showed the highest antimicrobial activity against the test organisms followed by gentamicin , novobiocin and carpencillin.
  Sanaa O. Yagoub , Nazik E. Awadalla , Ibtisam and E. M. El Zubeir
  The most predominant bacterium in raw milk samples investigated during the present study was Staphylococcus aureus, 21 isolates ( 30%) . Moreover, Gram- negative bacteria identified as Citrobacter spp., 15 (21.43%) , Shigella spp., 14 (20%), E. coli, 10 isolates (14.28/%), Enterobacter spp.,9 (12.86%), and Salmonella spp., 1, (1.43%) . Staphylococcus aureus count in the milk collected from the factory was (6?103 –1.2?106). Salmonella spp. count was 5?104 in the milk collected from the factory. Shigella spp., Enterobacter spp. and Citrobacter spp. were predominant in the milk collected from the factory (7?105 –1.4?106). On the other hand, the E. coli count was higher in the milk collected from the collection points (7?104 -7.5?106). In the present study, most of the bacteria isolated from the raw milk showed a wide range of multiple resistance to the tested antimicrobial agents. Penicillin, clindamycin, amoxicillin and ampicillin showed the highest resistance. Chloramphenicol showed the highest antimicrobial activity against the test organisms followed by gentamicin , novobiocin and carpencillin.
  Sanaa O. Yagoub
  A field survey for the study of bacterial diseases of the reproductive system of camels in Eastern Sudan was conducted .The important diseases of she-camels were acute catarrhal endometritis, pyometra, chronic endometritis and acute or chronic mastitis. The incidence of these diseases increased with age and reached its peak in autumn. Isolated bacteria included Staphylococcus aureus, E. coli, Klebsiella spp., Corynebacterium spp., Proteus spp., Salmonella spp. and Streptococcus spp. Although trials to isolate Brucella spp., were negative, high agglutinating titres were detected. Male camels had orchitis which was due to Staphylococcus aureus, E. coli and Proteus spp. These organisms in addition to Corynebacterium spp. and Clostridium spp., were isolated from wounds of the external genitalia. Incidence of orchitis and wounds of external genitalia was also increased with age in autumn.
  Abeer M. Haj Ali and Sanaa O. Yagoub
  The comparative antimicrobial activity of ethanol and chloroform extracts from Acacia nilotica fruit was studied. The bacteria isolated from abscesses or wounds of hospitalized patients were Staphylococcus aureus, Escherichia coli, Proteus vulgaris, Klebsiella pneumoniae and Pseudomonas aeruginosa. The susceptibility of isolated bacteria against ethanol extract (13, 6.7, 5, 3 and 1%) was higher than chlorform extract used in similar concentrations especially S. aureus (30-4 mm), E. coli (25-9 mm), Kl. pneumonia (18-0 mm), P. vulgaris (10-1 mm) and Ps. aeruginosa (20-4 mm). The inhibitory effects of the extracts on bacteria were compared with those of selected antibiotics. The ethanol extract of A. nilotica fruit was either equally or more effective than the test antibiotics.
  Sanaa O. Yagoub , Nada A.M. Oshi and Ibtisam E.M. El Zubeir
  This study was done to investigate the presence of Salmonellae in Sudanese white cheese at Khartoum State. Two hunderds cheese samples were purchased from restaur ants, retailers and shops, distributed in Khartoum and Omdurman. The isolated Salmonella paratyphi (6%) were equally identifed as paratyphi A and paratyphi B. The sensitivity to antibiotics for the isolated Salmonella spp. were also tried and multiple sensitivity was observed. Ciprofloxacin, Chloramphenicol and Ofloxacin were the most effective drugs against the tested isolates. The resistance was more frequent to Tetracycline, Gentamycin, Ampicillin, Penicillin and Co-trimoxazole. The present study concluded that Salmonella paratyphi A and Salmonella paratyphi B were isolated from cheese marketed in Khartoum State. Hence it is recommended that strict hygienic measurement and perodical survey and examinations should be done to ensure safety of food.
  Suzan A. Shareef and Sanaa O. Yagoub
  One hunderd and sixty three 14-82 year old women hospitalized at the Departments of Surgery and Medicine, Khartoum Teaching Hospital and co-patients women, nurses and workers were investigated for urinary tract infection. The number of women who had significant bacteriuria (105) was 94; 53 of them were symptomatic while 41 were asymptomatic. From the total of 100 bacterial strains that were isolated from the urine samples, (85%) of them were Gram-negative rods and (15%) were Gram-positive cocci. The Gram-negative bacilli were identified as Escherichia coli (49.4%), Proteus mirabilis (14.1%), Pseudomonas aeruginosa (10.6%), Klebsiella pneumoniae (5.9%), Citrobacter freundii (5.9%) and the rest belonged to the family Enterobacteriaceae. The Gram positive cocci were Staphylococcus spp. and 6 of them were coagulase- positive. The factors that affected the incidence of bacteriuria were age, duration of hospitalization and catheterization. Poor hygiene affected the incidence of the bacteriuria and was frequently observed among workers than nurses.
 
 
 
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