抗感染免疫是免疫学领域里一个古老的课题之一,一向深受人们重视,故研究得较为透彻。要了解抗感染免疫,必须先懂得何谓感染。病原微生物侵入机体,在体内生长繁殖并引起一定的病理过程,称为感染。问:感染是否一定引起疾病? 答:不一定。感染既可能引起疾病,也可能为隐性感染或带菌状态。发病与否决定于微生物的感染数量,毒力和入侵门户,也决定于机体的抵抗力——抗感染免疫的水平。抗感染免疫是指机体对病原生物及 Anti-infective immunity is one of the oldest issues in the field of immunology. It has always been valued by people, so it has been studied thoroughly. To understand anti-infective immunity, we must first understand what is meant by infection. Pathogenic microorganisms invade the body, growth and reproduction in the body and cause some pathological processes, known as infection. Q: Does infection cause disease? A: Not necessarily. Infections can either cause the disease, it can be latent infection or carrier status. The incidence depends on the number of microorganisms infected, virulence and intrusion portal, but also decided by the body’s resistance - the level of anti-infection immunity. Anti-infective immunity refers to the body’s pathogens and