Asymptomatic bacteriuria is a condition in which urine reveals significant growth; with no symptoms and signs of urinary tract infection, it is common during pregnancy and lead to serious complications. The objectives of this study were to determine the frequency of asymptomatic bacteriuria among pregnant women in Kosti teaching hospital, department of Obstetrics (White Nile State- Kosti-Sudan) and to identify the causative organisms and their antibiotics susceptibility pattern. This study was a prospective descriptive cross sectional study conducted in the department of Obstetrics and Gynecology at Kosti teaching hospital, from January to March 2017. A total of 192 pregnant women with no symptoms and signs of urinary tract infection were enrolled in the study. Midstream urine sample for culture was collected from each participant. All urine samples were inoculated on cystine lactose electrolyte deficient (CLED) and blood agar media, and incubated aerobically for 24 h at 37°C. The colonies then identified by Gram staining technique and conventional biochemical tests. Antibiotics susceptibility testing of the isolated organisms was done by using Kirby Bauer disc diffusion method. Out of the 192 pregnant women enrolled in the study, the prevalence of asymptomatic bacteriuria was 25/192(13%).The study showed that asymptomatic bacteriuria was significantly associated with the age of the pregnant women (P value 0.009), the prevalence increase with decrease in age and it was 25% in the age group (12-20 years), 11.93% in the age group (21-30) and only 2.56% among the age group above 30 years. The differences of asymptomatic bacteriuria according to the trimesters was not significant (P value = 0.264). Escherichia coli was the most frequent causal organism 8/25(32%) followed by Proteus species 7/25(28%), Klebsiella pneumoniae 4(16%), Staphylococcus saprophyticus 3/25(12%), Pseudomonas aeruginosa 2/25(8%) and Streptococcus agalactiae 1/25(4%). Isolates revealed high susceptibility to amikacin (84%), followed by ciprofloxacin (76%), and gentamycin (56%).However, all isolates were resistant to cotrimoxazole. High prevalence of asymptomatic bacteriuria was noted among pregnant women in Kosti teaching hospital and more common in younger pregnant. Escherichia coli was the most frequent isolate. Most of the isolated bacteria were sensitive to Amikacin and Ciprofloxacin.

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