Analysis on the prevalence of Clonorchis sinensis infection in Lingshan County, Guangxi from 2016 to 2019

doi:10.12140/j.issn.1000-7423.2022.05.017

Abstract

Abstract:

To understand the prevalence of Clonorchis sinensis infection in Lingshan County, one town/village was randomly selected from each of the eastern, western, southern, northern and central administrative regions for investigation from 2016 to 2019. By cluster sampling, 200 permanent residents aged more than 3 years were selected from each study site. More than 1 000 people were surveyed each year with no duplicate enrollment. The fecal samples were collected, and processed using the modified Kato-Katz method (two examinations per sample) for egg counts. Among 4 363 participants, 4.86% (212/4 363) were infected with C. sinensisand the majority were mild infections, accounting for 93.87% (199/212) of the total infections with no severe infection case. The infection rates from 2016 to 2019 were 3.59% (42/1 170), 5.03% (51/1 014), 7.58% (79/1 042) and 3.52% (40/1 137), respectively. The difference between years was statistically significant (χ² = 25.271, P < 0.01). Among the five survey sites, the highest infection rate was found in Changlu Village, Yandun Town (13.12%, 124/945), and the lowest was found in Chentong Village, Nalong Town (0.37%, 3/821). The difference between study sites was statistically significant (χ² = 211.912, P < 0.01). The infection rate in males was 7.43% (167/2 248), which was significantly higher than that in females (2.13%, 45/2 115) (χ² = 66.244, P < 0.01). The 50-59 age group had the highest infection rate (10.4%, 62/596) and the differences between age groups were significant (χ² = 142.690, P < 0.01). The infection rate of teachers and other occupations was the highest (9.33%, 7/75), and the differences between occupations were significant (χ² = 81.314, P < 0.01). The highest infection rate found in those with college or higher education levels (8.00%, 2/25), and significant difference in people with different education levels (χ² = 40.237, P < 0.01). From 2016 to 2019, the prevalence of C. sinensis in Lingshan County was moderate and different for each town/village.

Key words: Clonorchis sinensis, Infection rate, Lingshan County

CLC Number:

R532.23

HUANG Guang-hua, ZHANG Bo, LAI Hai-tao, Lv Guo-li, LIN Yuan, TANG Wen-qian, WAN Xiao-ling, JIANG Zhi-hua, LIU Jian. Analysis on the prevalence of Clonorchis sinensis infection in Lingshan County, Guangxi from 2016 to 2019[J]. CHINESE JOURNAL OF PARASITOLOGY AND PARASITIC DISEASES, 2022, 40(5): 673-676.

Figures/Tables 2

References 16

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调查点	总感染情况		2016年		2017年		2018年		2019年
调查点	检查人数	感染人数（感染率/%）	检查人数	感染人数（感染率/%）	检查人数	感染人数（感染率/%）	检查人数	感染人数（感染率/%）	检查人数	感染人数（感染率/%）
平山镇里村	894	47(5.26)	232	10（4.31）	198	7（3.54）	205	28（13.66）	259	2(0.77)
太平镇镇南村	872	34(3.90)	211	5（2.37）	198	6（3.03）	248	11（4.44）	215	12(5.58)
文利镇黎头村	831	4(0.48)	219	2（0.91）	211	2（0.95）	190	0（0）	211	0（0）
烟墩镇长麓村	945	124(13.12)	255	24（9.41）	212	35（16.51）	204	40（19.61)	274	25(9.12)
那隆镇陈垌村	821	3(0.37)	253	1（0.40）	195	1（0.51）	195	0（0）	178	1(0.56)
合计	4 363	212(4.86)	1 170	42（3.59）	1014	51（5.03）	1 042	79(7.58)	1 137	40(3.52)

特征	调查人数	感染人数	感染率/%
性别
男	2 248	167	7.43
女	2 115	45	2.13
年龄
0~9	7	986	0.71
10~19	9	617	1.46
20~29	21	430	4.88
30~39	47	547	8.59
40~49	50	529	9.45
50~59	62	596	10.40
60~69	13	380	3.42
≥ 70	3	278	1.08
职业
幼托儿童	431	4	0.93
散居儿童	176	0	0
学生	927	12	1.29
农民	2 613	184	7.04
工人	58	3	5.17
餐饮食品业	44	0	0
家务及待业	39	2	5.13
教师及其他	75	7	9.33
文化程度
学龄前儿童	607	4	0.66
文盲或半文盲	115	1	0.87
小学	1 571	76	4.84
初中	1 732	113	6.52
高中	208	8	3.85
中专或中技	105	8	7.62
大专及以上	25	2	8.00
合计	4 363	212	4.86