Analysis of Chlamydia Trachomatis Genotype among Female Sex Workers in Yunnan Province
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摘要:
目的 了解云南省暗娼人群中生殖道沙眼衣原体(chlamydia trachomatis,CT)的亚型分布情况及流行病学特征。 方法 2020年结合艾滋病哨点监测开展生殖道沙眼衣原体调查,收集生殖道沙眼衣原体核酸阳性样本374例,使用巢式PCR扩增CT的OmpA基因区并进行分析。 结果 在173个成功获得序列的样本中,共检测出7种基因型,其中以E型、F型、J型和D型为主要基因型,分别占24.9%(43/173)、21.4%(37/173)、19.1%(33/173)、17.9%(31/173),其他包括G型(9.3%,16/173)、K型(4.6%,8/173)和H型(2.9%,5/173)。不同型别之间在调查地区、户籍、是否为边境州(市)、年龄、民族、文化程度、婚姻状况、样本来源和场所档次等特征上差异无统计学意义(P > 0.05)。 结论 云南省暗娼人群中存在多种的CT亚型,其分布在主要的人口学特征上无差异,可为进一步控制CT的传播提供指导,也可为将来治疗和疫苗研究提供基础信息。 Abstract:Objective To investigate the serovar distribution and epidemiological characteristics of Chlamydia trachomatis (CT)in female sex workers (FSWs) from Yunnan Province. Methods A survey of Chlamydia trachomatis in the genital tract was conducted in 2020 in conjunction with HIV sentinel surveillance, and 374 nucleic acid-positive samples of Chlamydia trachomatis in the genital tract were collected. The OmpA gene region of CT was amplified by nested polymerase chain reaction (PCR) and analyzed. Results Seven genotypes were detected in 173 samples successfully genotyped, among which genotype E (24.9%, 43/173), genotype F (21.4%, 37/173), genotype J (19.1%, 33/173), genotype D (17.9%, 31/173) were the main genotypes, and the others included genotype G (9.3%, 16/173), genotype K (4.6%, 8/173)and genotype H (2.9%, 5/173). No statistically significant differences were found among the different genotypes in characteristics such as survey area, household registration, whether it was a border state (city), age, ethnicity, education level, marital status, sample source, and place class. Conclusion Multiple subtypes of CT exist in FSWs in Yunnan Province, and their distribution does not differ in terms of major demographic characteristics. This study may provide guidance for further control of CT transmission and provide basic information for future treatment and vaccine studies. -
Key words:
- Female sex workers /
- Chlamydia trachomatis /
- Genotype
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表 1 获得分型和收集到的研究对象的构成[n(%)]
Table 1. Obtained typing and composition of the collected study subjects [n(%)]
人口学特征 总样本(n = 374) 获得分型样本(n = 173) χ2 P 调查地区 4.784 0.310 滇东北 41(11.0) 15(8.7) 滇东南 56(15.0) 24(13.9) 滇中 34(9.1) 16(9.2) 滇西北 159(42.5) 83(48.0) 滇西南 84(22.5) 35(20.2) 年龄(岁) 2.843 0.092 ≤25 203(54.3) 102(59.0) >25 171(45.7) 71(41.0) 民族 0.151 0.697 汉族 210(56.1) 99(57.2) 其他 164(43.9) 74(42.8) 样本来源 0.383 0.536 娱乐场所 173(46.2) 83(48.0) 非娱乐场所 201(63.8) 90(52.0) 表 2 不同亚型感染者的人口学特征[n(%)]
Table 2. Demographic characteristics of patients with different subtypes of infection [n(%)]
人口学特征 合计 CT基因型(n,%) χ2 P E(n = 43) F(n = 37) J(n = 33) D(n = 31) 其他(n = 29) 调查地区a 19.181 0.259 滇东北 15 3 (20.0) 2 (13.3) 3 (20.0) 2 (13.3) 5 (33.3) 滇东南 24 5 (20.8) 10 (41.7) 4 (16.7) 3 (12.5) 2 (8.3) 滇中 16 5 (31.3) 3 (18.8) 2 (12.5) 5 (31.3) 1 (6.3) 滇西北 83 21 (25.3) 14 (16.9) 20 (24.1) 11 (13.3) 17 (20.5) 滇西南 35 9 (25.7) 8 (22.9) 4 (11.4) 10 (28.6) 4 (11.4) 户籍 2.684 0.620 本省 152 38 (25.0) 35 (23.0) 28 (18.4) 26 (17.1) 25 (16.4) 其他 21 5 (23.8) 2 (9.5) 5 (23.8) 5 (23.8) 4 (19.0) 是否为边境州(市)b 3.160 0.536 是 117 30 (25.6) 28 (23.9) 20 (17.1) 22 (18.8) 17 (14.5) 否 56 13 (23.2) 9 (16.1) 13 (23.2) 9 (16.1) 12 (21.4) 年龄/岁 4.318 0.365 ≤25 102 22 (21.6) 26 (25.5) 17 (16.7) 18 (17.6) 19 (18.6) >25 71 21 (29.8) 11 (15.5) 16 (22.5) 13 (18.3) 10 (14.0) 民族 4.533 0.343 汉族 99 23(23.2) 20(20.2) 17(17.2) 23(23.2) 16(16.2) 其他 74 20(27) 17(23) 16(21.6) 8(10.8) 13(17.6) 文化程度 11.620 0.162 小学及以下 29 10 (34.5) 3 (10.3) 6 (20.7) 5 (17.2) 5 (17.2) 初中 92 20 (21.7) 23 (25.0) 14 (15.2) 22 (23.9) 13 (14.1) 高中及以上 52 13 (25.0) 11 (21.2) 13 (25.0) 4 (7.7) 11 (21.2) 婚姻状况 12.527 0.109 未婚 99 21 (21.2) 24 (24.2) 17 (17.2) 17 (17.2) 20 (20.2) 同居或已婚 60 16 (26.7) 12 (20.0) 16 (26.7) 10 (16.7) 6 (10.0) 离异或丧偶 14 6 (42.9) 1 (7.1) 0 (0.0) 4 (28.6) 3 (21.4) 样本来源c 2.250 0.690 娱乐场所 83 18 (21.7) 20 (24.1) 16 (19.3) 13 (15.7) 16 (19.3) 非娱乐场所 90 25 (27.8) 17 (18.9) 17 (18.9) 18 (20.0) 13 (14.4) a:滇东北:昭通市、曲靖市;滇东南:红河州、文山州;滇中:昆明市、玉溪市、楚雄州;滇西北:大理州、丽江市、迪庆州、怒江州、保山市、德宏州;滇西南:临沧市、普洱市、西双版纳州。b:边境州(市):文山州、红河州、西双版纳州、普洱市、临沧市、德宏州、保山市、怒江州;非边境州(市):昭通市、曲靖市、昆明市、玉溪市、楚雄州、大理州、迪庆州、丽江市。c:娱乐场所:卡拉ok厅/歌舞厅/酒吧、夜总会;非娱乐场所:宾馆/酒店、路边店/小饭店、街头、桑拿/洗浴中心、洗脚屋/发廊、其他。 -
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