免疫缺陷是一组由于免疫器官先天性发育不良或后天受损,引起机体一种或几种免疫功能不全的临床综合征,以易于发生各种感染性疾病为其临床特点。免疫缺陷与感染的关系及对感染的防治是现代医学领域中研究的重要课题。本文通过对免疫缺陷的概述,重点讨论免疫缺陷宿主(CH)与感染有关的若干临床问题。 Immunodeficiency is a set of clinical syndromes that cause one or several immune dysfunction in the body due to congenital hypoplasia or acquired immunity of immune organs. Clinical features are prone to various infectious diseases. The relationship between immunodeficiency and infection and the prevention and treatment of infection are important topics in the field of modern medicine. Through an overview of immunodeficiency, this article focuses on a number of clinical issues related to infection in immunocompromised hosts (CHs).