Thank you for following up. Do you know our grandparents as children have low immunity. Morganella morganii is Gram-negative stick,which live in our intestine, but it cause of community-acquired infection, she can associate with other flora,for instance with our E.coli and cause diarrhea, then by blood this infection can penetrate to urinary tract and cause inflammation. Don t be suprise. If we have too much bacteria in intestine,then they will lead to diarrhea or constipaton. For normal intestinal flora please give to your Grandma probiotics(Darolac or Visilac 1 capsule twice a day for 1 month). Take care Wishing you good health