EN
Similar bacterial floras are present in the vagina and uterus of healthy bitches. The most common of these bacteria are b-hemolytic streptococci, Pasteurella multocida and E. coli and Staphylococcus intermedius. Bacterial flora varies during the estrous cycle with the highest bacterial count occurring during heat. E. coli was most frequently isolated from bitches with pyometra. No specific bacterial species are associated with vaginitis and infertility.