Abstract:
This study investigated the activity of tetracycline against specific
bacterial species isolated from different clinical specimens in the
period from August to October 2003. These specimens were cultured
on enriched, and selective media. The isolates were identified as E.
coli (n = 10), Proteus spp. (n = 10) salmonella spp. (n = 10), Shigella
spp. (n = 10) and Klebsiella spp. (n = 10).
All isolate were studied for their susceptibility to tetracycline using
the disk diffusion method on Mueller Hinton agar and serial dilution.
The results indicated that the rate of resistance was 68% and the
minimum inhibitory concentrations (MICs) were determined for each
isolate and was found to be as follows: (mg/ml) E. coli > 30, Shigella
spp. > 30, Klebsiella spp. < 30 to > 7.5, Proteus spp. >30 and
salmonella spp. < 30 to > 15.
