The fourth survey on the prevalence of major human parasitic diseases in Jiangxi Province in 2025

doi:10.12140/j.issn.1000-7423.2026.03.007

Abstract

Abstract:

Objective To investigate and analyze the prevalence and changing trends of major human parasitic diseases in Jiangxi Province, so as to provide insights into optimization of the control strategies and measures. Methods According to the Protocol for National Survey on the Status of Major Human Parasitic Diseases in China in 2025 and based on the actual conditions of Jiangxi Province, soil-transmitted helminth infections were surveyed in ecological zones using a multistage stratified cluster sampling method according to economic conditions and geographical locations. Each survey county was divided into five regions (northeastern, southeastern, southwestern, northwestern, and central) according to geographical locations, and one township was randomly selected from each region. Then, one natural village was randomly selected from each township as the survey point, with 200 individuals surveyed per point. Three townships were randomly sampled from Xinfeng County, an area endemic for Clonorchis sinensis in Jiangxi Province, and one natural village was randomly sampled from each township as the survey point, with 200 individuals surveyed per point. Helminth (soil-transmitted nematodes, C. sinensis and Taenia spp.) eggs were detected using a modified Kato-Katz thick smear technique, while pinworms were detected among children at ages of 3 to 9 years using a cellophane tape test. Results A total of 18 155 individuals were surveyed across 88 survey points in 18 counties of Jiangxi Province, including 896 children detected for pinworm infections. Six species of intestinal helminths were identified, including hookworm, Trichuris trichiura, Enterobius vermicularis, C. sinensis, Paragonimus, and Echinostoma. The average prevalence rates of intestinal helminth infections and soil-transmitted nematode infections were 1.47% (266/18 155) and 0.90% (163/18 155), while the prevalence rates of hookworm, T. trichiura, E. vermicularis, C. sinensis infections were 0.75% (137/18 155), 0.15% (27/18 155), 0.11% (20/18 155), and 0.44% (80/18 155), respectively. In addition, Echinostoma infections were detected among 5 individuals and Paragonimus infection occurred among one individual. The prevalence of pinworm infections was 2.01% (18/896) among children at ages of 3 to 9 years. The highest prevalence of helminth infections was recorded in the Nanling Mountain and Hilly Ecological Zone (2.96%, 79/2 666), while the lowest was seen in the Zhejiang-Fujian Mountain and Hilly Ecological Zone (0.34%, 7/2 035) (χ² = 44.09, P < 0.01). The highest prevalence of soil-transmitted helminth infections (1.38%, 101/7 324) was found in the Hunan-Jiangxi Hilly and Mountain Ecological Zone (χ² = 37.97, P < 0.01), with the highest prevalence of T. trichiura infections in the Plain Ecological Zone of the Middle and Lower reaches of the Yangtze River (0.28%, 17/6 130), the highest prevalence of hookworm infections in the Hunan-Jiangxi Hilly and Mountain Ecological Zone (1.27%, 93/7 324) (χ² = 44.91, P < 0.01), and 88.75% (71/80) of C. sinensis infections concentrated in the Nanling Mountain and Hilly Ecological Zone. In terms of survey counties, the highest prevalence of hookworm infections was seen in Le’an County (2.19%, 23/1 052), and the highest prevalence of C. sinensis infections was recorded in Xinfeng County (11.61%, 70/603). In terms of genders, the prevalence of C. sinensis infections was higher among men (0.72%, 63/8 799) than among women (0.18%, 17/9 356) (χ² = 29.51, P < 0.01), and the prevalence of soil-transmitted nematode infections was higher among women (1.10%, 103/9 356) than among men (0.68%, 60/8 799) (χ² = 8.95, P < 0.05). Helminth infections were detected among individuals across all age groups, with the highest prevalence found among individuals at ages of 70 years and older (2.27%, 110/4 849) and the lowest at ages of 10 to 19 years (0.41%, 6/1 446). Parasitic infections recorded among individuals with all occupations except scattered children, and the highest prevalence rates of helminth (1.70%, 227/13 354), soil-transmitted nematode (1.12%, 150/13 354), T. trichiura (0.18%, 24/13 354), hookworm (0.95%, 127/13 354) and C. sinensis infections (0.55%, 74/13 354) were all found among farmers. Conclusion The infection rates of key parasites among the population in Jiangxi Province have all dropped to historical lows, yet certain issues still stand out prominently-such as hookworm infections among people aged 60 and above, pinworm infections in children aged 3 to 9, and C. sinensis infections in regions where raw freshwater fish is consumed. The health education-led integrated control strategy with an emphasis on the management of the source of infections has achieved remarkable effectiveness, which is recommended to be implemented for a long time of period.

Key words: Major parasite, Current prevalence, Survey, Jiangxi Province

CLC Number:

LAN Weiming, QIU Tingting, LI Zhaojun, GAO Xiaohui, WEN Yusong, LI Xiaoqin, LIU Kexing, CHEN Zhe, ZENG Xiaojun, DING Sheng, GE Jun. The fourth survey on the prevalence of major human parasitic diseases in Jiangxi Province in 2025[J]. CHINESE JOURNAL OF PARASITOLOGY AND PARASITIC DISEASES, 2026, 44(3): 358-364.

Figures/Tables 2

Table 1

Distribution of major human parasites in ecological regions and counties (districts) in Jiangxi Province in 2025

生态区 Ecological region	县（市、区）County (City, District)	调查人数 No. surveyed	感染人数（感染率/%） No. infected (Infection rate/%)
生态区 Ecological region	县（市、区）County (City, District)	调查人数 No. surveyed	蠕虫 Helminths	土源性线虫STH	鞭虫 Trichuris trichiura	钩虫 Hookworm	华支睾吸虫 Clonorchis sinensis
南岭 Nanling	定南 Dingnan	1 004	4（0.40）	2（0.20）	0（0）	2（0.20）	1（0.10）
	龙南 Longnan	1 059	2（0.19）	2（0.19）	0（0）	2（0.19）	0（0）
	信丰 Xinfeng	603	73（12.11）	4（0.66）	1（0.17）	3（0.50）	70（11.61）
	小计 Subtotal	2 666	79（2.96）	8（0.30）	1（0.04）	7（0.26）	71（2.66）
湘赣 Xianggan	吉水 Jishui	1 047	17（1.62）	17（1.62）	2（0.19）	15（1.43）	0（0）
	泰和 Taihe	1 053	23（2.18）	11（1.04）	5（0.47）	6（0.57）	7（0.66）
	宁都 Ningdu	1 070	23（2.15）	15（1.40）	2（0.19）	14（1.31）	0（0）
	万载 Wanzai	1 027	12（1.17）	7（0.68）	0（0）	7（0.68）	1（0.10）
	乐安 Le’an	1 052	24（2.28）	23（2.19）	0（0）	23（2.19）	0（0）
	分宜 Fenyi	1 041	10（0.96）	10（0.96）	0（0）	10（0.96）	0（0）
	莲花 Lianhua	1 034	19（1.84）	18（1.74）	0（0）	18（1.74）	0（0）
	小计 Subtotal	7 324	128（1.75）	101（1.38）	9（0.12）	93（1.27）	8（0.11）
长江中下游 Middle and lower reaches of the Yangtze River	安义 Anyi	1 035	16（1.55）	15（1.45）	3（0.29）	12（1.16）	0（0）
	柴桑 Chaisang	1 045	2（0.19）	2（0.19）	0（0）	2（0.19）	1（0.10）
	高安 Gao’an	1 007	15（1.49）	14（1.39）	4（0.40）	10（0.99）	0（0）
	进贤 Jinxian	1 000	10（1.00）	10（1.00）	4（0.40）	6（0.60）	0（0）
	庐山 Lushan	1 021	3（0.29）	2（0.20）	2（0.20）	0（0）	0（0）
	余干 Yugan	1 022	6（0.59）	4（0.39）	4（0.39）	0（0）	0（0）
	小计 Subtotal	6 130	52（0.85）	47（0.77）	17（0.28）	30（0.49）	1（0.02）
浙闽 Zhemin	浮梁 Fuliang	1 035	2（0.19）	2（0.19）	0（0）	2（0.19）	0（0）
	贵溪 Guixi	1 000	5（0.50）	5（0.50）	0（0）	5（0.50）	0（0）
	小计 Subtotal	2 035	7（0.34）	7（0.34）	0（0）	7（0.34）	0（0）
合计 Total		18 155	266（1.47）	163（0.90）	27（0.15）	137（0.75）	80（0.44）

Table 1

Table 2

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年龄组 Age group	调查人数 No. suveyed	感染人数（感染率/%）No. infected (Infection rate/%)
年龄组 Age group	调查人数 No. suveyed	蠕虫 Helminths	土源性线虫 STH	鞭虫 Trichuris trichiura	钩虫 Hookworm	华支睾吸虫 Clonorchis sinensis
< 10	1 247	19（1.52）	1（0.08）	1（0.08）	0（0）	0（0）
10~19	1 446	6（0.41）	4（0.28）	2（0.14）	2（0.14）	1（0.07）
20~29	540	3（0.56）	1（0.19）	0（0）	1（0.19）	2（0.37）
30~39	1 052	9（0.86）	1（0.10）	1（0.10）	0（0）	6（0.57）
40~49	1 401	14（1.00）	5（0.36）	0（0）	5（0.36）	10（0.71）
50~59	3 328	43（1.29）	13（0.39）	6（0.18）	7（0.21）	30（0.90）
60~69	4 292	62（1.44）	42（0.98）	10（0.23）	32（0.75）	18（0.42）
≥ 70	4 849	110（2.27）	96（1.98）	7（0.14）	90（1.86）	13（0.27）
合计 Total	18 155	266（1.47）	163（0.90）	27（0.15）	137（0.75）	80（0.44）