目的:了解藏区汉族中老年人结膜囊细菌状况。方法:对甘孜州康定县姑咱镇、炉城镇,九龙县呷尔镇的汉族中老年人群173例346眼刮取下睑结膜囊分泌物,接种于血平板,培养48h后进行细菌分离鉴定。结果:选取346眼中结膜囊细菌培养阳性209眼,培养阳性率60.4%。培养出菌株232株,其中表皮葡萄球菌115(49.6%);棒状杆菌60株(25.9%)。康定县姑咱镇、炉城镇的汉族中老年人结膜囊细菌阳性率分别为69.2%和65.8%,差异无统计学意义(χ2=0.1709,P>0.05)。九龙县呷尔镇中老年人结膜囊细菌阳性率为44.3%,分别低于康定姑咱镇、炉城镇的中老年人结膜囊细菌阳性率,差异有统计学意义(姑咱镇vs呷尔镇:χ2=13.2002,P<0.05;炉城镇vs呷尔镇:χ2=9.6869,P<0.05)。结论:甘孜州多数汉族中老年人结膜囊存在细菌;绝大多数细菌为革兰氏阳性菌;表皮葡萄球菌、棒状杆菌是其结膜囊的优势菌种。区域不同,结膜囊细菌阳性率不同。

AIM:To evaluate the species of bacteria on the conjunctiva sac of the middle age and the elder of Han nationality in Ganzi district·METHODS:A total of 173 cases(346 eyes) of the middle age and the elder of Han nationality in Ganzi Tibetan Autonomous Prefecture were examined.The professional person embrocated the inferior palpebral conjunctiva.Then the secretion was inoculated on blood plate for 48hours,the bacteria was seperated and identified·RESULTS: The positive rate of the bacteria cultivation was 60.4.%(209/346).Totel 232 strains were cultivated.The most dominant was Staphylococcus epidermidis(115 strains,49.6%),the next was Corynebacterium(60 strains,25.9%).The positive rate of bacteria in the conjunctival sac of the elder in Guzan and Lucheng town of Kangding County were 69.2% and 65.8%,the difference was not statistically significant(χ2=0.1709,P>0.05).The positive rate of the elder in Gar town of Jiulong County was 44.3%,compared with the ones in Guzan and Lucheng town was lower.The difference was statistically significant(Guzan vs Gar:χ2=13.2002,P<0.05;Lucheng vs Gar:χ2= 9.6869,P<0.05)·CONCLUSION:Bacteria could be found in most people’s conjunctiva of Han nationality,Staphylococcus epidermidis and Corynebacterium were the dominant strain on the conjunctiva of the middle age and the elder.Different district has different positive rate of the bacteria cultivation.

R777.3

中国四川省卫生厅科学研究资助项目(No.080302)