If you have appendicitis, or any other inflamed intestinal disease. 如果你患有闌尾炎或其他腸道疾病。
Widespread outbreaks of intestinal disease are so rare that the commensal bacteria face little danger of extermination. 而且發(fā)達國家大規模爆發(fā)腸道疾病的可能性很小,使共棲菌被消滅的危險性也大大降低。