首页/ 题库 / [单选题]女孩,12岁。发热、鼻塞、流涕,按上感治的答案

女孩,12岁。发热、鼻塞、流涕,按上感治疗10天发热不退住院。3个月前,其同班多名同学患伤寒住院、住院后血培养伤寒杆菌生长()

单选题
2021-12-31 00:03
A、显性感染
B、隐性感染
C、带菌者
D、潜在性感染
E、既往有过感染
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正确答案
D

试题解析
2.潜在性感染即病原体与人体相互作用,保持暂时平衡状态,不出现疾病表现,但当人体防御功能减退时,则可引起疾病过程。本患者3个月前,同班有多名伤寒病人住院,由于小学生间接触较多,此时已受到伤寒菌感染,机体与伤寒杆菌处于平衡状态,未引起发病,本次由于上呼吸道感染,使患者抵抗力降低,细菌繁殖引起发病。伤寒从感染到发病的潜伏期通常10天左右,此次发病前的3个月并不是伤寒潜伏期。

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