When intestines rupture and allow digestive microorganisms to enter the abdominal cavity causing infection it is an example of normal flora becoming pathogens because they have entered a part of the body that they

are not typically found in. This can lead to a condition called peritonitis, which is a serious and potentially life-threatening infection. In this case, the normal flora, which are typically harmless when contained in their natural environment, can become opportunistic pathogens when they enter a different part of the body and cause infection.