Bacterial contamination of the [[Female Reproductive Tract - Horse Anatomy#Uterus|uterus]] from the environment is frequent. Organisms are usually eliminated during foal heat or disappear at second postpartum oestrus. | Bacterial contamination of the [[Female Reproductive Tract - Horse Anatomy#Uterus|uterus]] from the environment is frequent. Organisms are usually eliminated during foal heat or disappear at second postpartum oestrus. |