Hello dear, Thank you for your contact to health care magic. I read and understand your concern. I am Dr Arun Tank answering your concern. Usually Klebsiella bacteria are pathogenic in the respiratory tract and urinary tract but not on the GIT or diarrhea. We can count this bacteria as a commensal flora of the intestine and can ignore its presence in the stool. So in my opinion you should not take the drugs just because Klebsiella is iaolated from the stool. Pathology for diarrhea may be some thing different and so can be diagnosed and treated accordingly. May be you have taken the long lasting antibiotics that has washed of your commensal flora. I advice you to take the probiotics like lactobacillus spore. This help replace the flora and can help in prevention of diarrhea. I will be happy to answer your further concern on bit.ly/DrArun. Thank you, Dr Arun Tank Infectious diseases specialist, HCM.