唐山市大学生面部蠕形螨感染情况调查

2008年对唐山市4所高校512名大学生进行了蠕形螨感染情况调查。结果显示, 大学生面部蠕形螨的总感染率为36.3%（186/512）, 其中男、女性感染率分别为39.3%（81/206）和34.3%（105/306）（P＞0.05）。在蠕形螨感染者中, 毛囊型、皮脂型和混合型分别占82. 3%（153/186）、7.5%（14/186）和10.2%（19/186）；额部、鼻尖部和鼻翼侧的感染分别占43.0%（80/186）、50.0%（93/186）和31.7%（59/186）。不同皮肤类型的感染率不同, 油性、干燥型和混合型皮肤的感染率分别为47.0%（93/198）、26.6%（37/139）和33.9%（56/165）, 三者差异有统计学意义（P＜0.05）。面部有酒糟鼻和痤疮等疾患者蠕形螨的感染率为62.0%（75/121）, 高于面部无疾患者（27.6%, 80/290）, 两者差异有统计学意义（P＜0.05）；居住环境潮湿者感染率为67.9%（95/140）, 远高于居住环境干燥者（24.5%, 91/372）, 两者差异有统计学意义（P＜0.05）。

Facial Demodex Infection among College Students in Tangshan

A survey indicated that the prevalence of Demodex infection among 512 college students in Tangshan was 36.3%（186/512）, that of males and females was 39.3%（81/206）and 34.3%（105/306）respectively（P＞0.05）. The infection of Demodex folliculorum accounted for 82.3%（153/186）, followed by D. brevis(7.5%, 14/186）and mixed infection（10.2%, 19/186）. The prevalence was 47.0%（93/198）in subjects with oily skin, 26.6%（37/139）in those with dry skin, and 33.9%（56/165）in mixed-type skin （P＜0.05）. Subjects with facial diseases（62.0%, 75/121）, such as rosacea and acne, were more likely to be infected with Demodex than those with healthy skin （27.6%, 80/290） （P＜0.05）. Prevalence in those lived in humid environment（67.9%, 95/140）was higher than those lived in the desiccating environment （24.5%, 91/372）（P＜0.05）.