1.From transmission to elimination: progress of schistosomiasis control in Sichuan Province
Jiajia WAN ; Zisong WU ; Lin CHEN ; Nannan WANG ; Yu ZHANG ; Chen PU ; Rongzhi LI ; Xianhong MENG ; Liang XU ; Jingye SHANG ; Ding LU ; Bo ZHONG ; Yang LIU
Chinese Journal of Schistosomiasis Control 2026;38(3):232-239
Sichuan Province is a hilly schistosomiasis-endemic province in China with the highest endemicity and largest coverage. During the period of more than 70 years of integrated control, there are five distinct phases of schistosomiasis control in Sichuan Province, including baseline investigation, Oncomelania hupensis snail control, chemotherapy for both humans and livestock, management of source of Schistosoma japonicum infections, and sustained control and intensified surveillance and early warning, and a package of key interventions are implemented, including environmental modification, snail control with chemical treatment, large-scale chemotherapy for humans and livestock, management of source of S. japonicum infections, intensified integrated control, establishment of an early warning and surveillance system. As a result, schistosomiasis has been eliminated across all 63 disease-endemic counties (cities, districts) in Sichuan Province by June 2025. Government-led multi-sectoral collaborations, science and technology-supported precision control strategies, and a sustainable control model tailored to the ecological and socio-economic conditions in endemic regions are essential to achieving the target of schistosomiasis elimination in Sichuan Province.
2.Practice and optimization pathways of the surveillance - response system for schistosomiasis during the elimination stage in China: a One Health perspective
Jiajia WAN ; Jingye SHANG ; Jing XU ; Chen PU ; Nannan WANG ; Rongzhi LI ; Yu ZHANG ; Liang XU ; Xianhong MENG ; Ding LU ; Lin CHEN ; Zisong WU ; Bo ZHONG ; Xiaonong ZHOU ; Yang LIU
Chinese Journal of Schistosomiasis Control 2026;38(4):361-368
This paper systematically analyzes schistosomiasis transmission risks during the elimination stage and reviews the evolution of the schistosomiasis surveillance system in China from a One Health perspective, with a special emphasis on schistosomiasis surveillance and response practices during the elimination stage from a One Health perspective. These practices include precise screening of human schistosomiasis under low-endemicity conditions, systematic monitoring of schistosomiasis in domestic and wild animals, ecological management of Oncomelania snails, and information-coordinated responses. Nevertheless, the current surveillance and response system for schistosomiasis suffers from challenges of insufficient cross-sectoral coordination and complex external environments, which constrain precise schistosomiasis surveillance and response in China. Therefore, it is urgently necessary to integrate coordination mechanisms, empower the surveillance system with technological innovation, improve capacity building, and actively promote diverse social participation in the One Health framework, so as to consolidate current schistosomiasis control achievements and achieve the target for schistosomiasis elimination across China, which may provide a replicable technical model for global zoonoses control.
3.Serum anti-Müllerian hormone levels among female undergoing premarital and preconception examinations
LI Wei ; WAN Huiqing ; HAN Haiyan ; YU Jiqi ; HUANG Yizhou ; WANG Feixue ; ZHOU Jianhong
Journal of Preventive Medicine 2026;38(2):187-190
Objective:
To analyze serum anti-Müllerian hormone (AMH) level and its influencing factors among female undergoing premarital and preconception examinations, so as to provide the evidence for optimizing reproductive health management measures.
Methods:
Female who received free premarital and preconception examinations and voluntarily underwent serum AMH testing at Women and Children's Health Center of Gongshu District, Hangzhou City from January 2022 to April 2025 were selected as study subjects. Demographic information and reproductive history were collected through questionnaire survey. Venous blood was collected to detect thyroid-stimulating hormone (TSH), alanine aminotransferase, hemoglobin (Hb), and AMH levels. The original AMH values did not follow a normal distribution, but followed a normal distribution after natural logarithm transformation, recorded as ln (AMH). Pearson correlation analysis was used to analyze the correlation between variables, and multiple linear regression model was used to analyze the influencing factors for ln (AMH) levels among female undergoing premarital and preconception examinations.
Results:
A total of 1 073 females undergoing premarital and preconception examinations were surveyed, with a mean age of (29.43±3.30) years. There were 959 females without pregnancy (89.38%) and 1 042 females without full-term live birth history (97.11%). The median AMH level was 3.85 (interquartile range, 3.63) ng/mL, and the mean ln (AMH) level was 1.27±0.75. The ln (AMH) levels were higher in females without pregnancy and without full-term live birth history (both P<0.05). The ln (AMH) level was negatively correlated with age (r=-0.260) and TSH (r=-0.093), and positively correlated with Hb (r=-0.260, -0.093, and 0.073, all P<0.05). Multiple linear regression analysis showed that age (β′=-0.253) and TSH (β′=-0.103) were statistically associated with ln (AMH) levels among female undergoing premarital and preconception examinations (both P<0.05). The associations of other variables with ln (AMH) levels were not statistically significant (all P>0.05).
Conclusions
Age and TSH level are influencing factors for AMH levels among female undergoing premarital and preconception examinations. AMH levels among female undergoing premarital and preconception examinations decrease with increasing age and increasing TSH level.
4.Changes in renal function in chronic hepatitis B patients treated initially with entecavir versus tenofovir alafenamide fumarate and related influencing factors
Shipeng MA ; Yanqing YU ; Xiaoping WU ; Liang WANG ; Liping LIU ; Yuliang ZHANG ; Xin WAN ; Shanfei GE
Journal of Clinical Hepatology 2025;41(1):44-51
ObjectiveTo investigate the influence of entecavir (ETV) versus tenofovir alafenamide fumarate (TAF) on renal function in previously untreated patients with chronic hepatitis B (CHB). MethodsA retrospective analysis was performed for the clinical data of 167 previously untreated CHB patients who received ETV or TAF treatment for at least 48 weeks at the outpatient service of Department of Infectious Diseases in The First Affiliated Hospital of Nanchang University from September 2019 to November 2023, and according to the antiviral drug used, they were divided into ETV group with 117 patients and TAF group with 50 patients. In order to balance baseline clinical data, propensity score matching (PSM) was used for matching and analysis at a ratio of 2∶1, and the two groups were compared in terms of estimated glomerular filtration rate (eGFR) and the incidence rate of abnormal renal function at week 48. According to eGFR at week 48, the patients were divided into normal renal function group and abnormal renal function group. The independent-samples t test or the Mann-Whitney U test was used for comparison of continuous data between two groups, and the chi-square test or the Fisher’s exact test was used for comparison of categorical data between two groups. The multivariate Logistic regression analysis was used to investigate the influencing factors for abnormal renal function, and the receiver operating characteristic (ROC) curve was used to assess the performance of each indicator in predicting abnormal renal function. The Kaplan-Meier method was used to analyze the cumulative incidence rate of abnormal renal function, and the log-rank test was used for comparison. The analysis of variance with repeated measures was used to compare the dynamic changes of eGFR during antiviral therapy in CHB patients. ResultsAfter PSM matching, there were 100 patients in the ETV group and 50 patients in the TAF group. There were no significant differences in baseline clinical data between the ETV group and the TAF group (all P>0.05), with an eGFR level of 112.29±9.92 mL/min/1.73 m2 in the ETV group and 114.72±12.15 mL/min/1.73 m2 in the TAF group. There was a reduction in eGFR from baseline to week 48 in both groups, and compared with the TAF group at week 48, the ETV group had a significantly lower eGFR (106.42±14.12 mL/min/1.73 m2 vs 112.25±13.44 mL/min/1.73 m2, t=-2.422, P=0.017) and a significantly higher incidence rate of abnormal renal function (17.00% vs 4.00%, χ2=5.092, P=0.024). After the patients were divided into normal renal function group with 131 patients and abnormal renal function group with 19 patients, the univariate analysis showed that there were significant differences between the two groups in age (Z=-2.039, P=0.041), treatment drug (ETV/TAF) (χ2=5.092, P=0.024), and baseline eGFR level (t=4.023, P<0.001), and the multivariate Logistic regression analysis showed that baseline eGFR (odds ratio [OR]=0.896, 95% confidence interval [CI]: 0.841 — 0.955, P<0.001) and treatment drug (OR=5.589, 95%CI: 1.136 — 27.492, P=0.034) were independent influencing factors for abnormal renal function. Baseline eGFR had an area under the ROC curve of 0.781 in predicting abnormal renal function in CHB patients, with a cut-off value of 105.24 mL/min/1.73 m2, a sensitivity of 73.68%, and a specificity of 82.44%. The Kaplan-Meier curve analysis showed that the patients with baseline eGFR≤105.24 mL/min/1.73 m2 had a significantly higher cumulative incidence rate of abnormal renal function than those with baseline eGFR>105.24 mL/min/1.73 m2 (χ2=22.330, P<0.001), and the ETV group had a significantly higher cumulative incidence rate of abnormal renal function than the TAF group (χ2=4.961, P=0.026). With the initiation of antiviral therapy, both the ETV group and the TAF group had a significant reduction in eGFR (F=5.259, P<0.001), but the ETV group only had a significant lower level of eGFR than the TAF group at week 48 (t=-2.422, P=0.017); both the baseline eGFR≤105.24 mL/min/1.73 m2 group and the baseline eGFR>105.24 mL/min/1.73 m2 group had a significant reduction in eGFR (F=5.712, P<0.001), and there was a significant difference in eGFR between the two groups at baseline and weeks 12, 24, 36, and 48 (t=-13.927, -9.780, -8.835, -9.489, and -8.953, all P<0.001). ConclusionFor CHB patients initially treated with ETV or TAF, ETV antiviral therapy has a higher risk of renal injury than TAF therapy at week 48.
5.Medication rules of Astragali Radix in ancient Chinese medical books based on "disease-medicine-dose" pattern.
Jia-Lei CAO ; Lü-Yuan LIANG ; Yi-Hang LIU ; Zi-Ming XU ; Xuan WANG ; Wen-Xi WEI ; He-Jia WAN ; Xing-Hang LYU ; Wei-Xiao LI ; Yu-Xin ZHANG ; Bing-Qi WEI ; Xian-Qing REN
China Journal of Chinese Materia Medica 2025;50(3):798-811
This study employed the "disease-medicine-dose" pattern to mine the medication rules of traditional Chinese medicine(TCM) prescriptions containing Astragali Radix in ancient Chinese medical books, aiming to provide a scientific basis for the clinical application of Astragali Radix and the development of new medicines. The TCM prescriptions containing Astragali Radix were retrieved from databases such as Chinese Medical Dictionary and imported into Excel 2020 to construct the prescription library. Statical analysis were performed for the prescriptions regarding the indications, syndromes, medicine use frequency, herb effects, nature and taste, meridian tropism, dosage forms, and dose. SPSS statistics 26.0 and IBM SPSS Modeler 18.0 were used for association rules analysis and cluster analysis. A total of 2 297 prescriptions containing Astragali Radix were collected, involving 233 indications, among which sore and ulcer, consumptive disease, sweating disorder, and apoplexy had high frequency(>25), and their syndromes were mainly Qi and blood deficiency, Qi and blood deficiency, Yin and Yang deficiency, and Qi deficiency and collateral obstruction, respectively. In the prescriptions, 98 medicines were used with the frequency >25 and they mainly included Qi-tonifying medicines and blood-tonifying medicines. Glycyrrhizae Radix et Rhizoma, Angelicae Sinensis Radix, Ginseng Radix et Rhizoma, Atractylodis Macrocephalae Rhizoma, and Citri Reticulatae Pericarpium were frequently used. The medicines with high frequency mainly have warm or cold nature, and sweet, pungent, or bitter taste, with tropism to spleen, lung, heart, liver, and kidney meridians. In the treatment of sore and ulcer, Astragali Radix was mainly used with the dose of 3.73 g and combined with Glycyrrhizae Radix et Rhizoma to promote granulation and heal up sores. In the treatment of consumptive disease, Astragali Radix was mainly used with the dose of 37.30 g and combined with Ginseng Radix et Rhizoma to tonify deficiency and replenish Qi. In the treatment of sweating disorder, Astragali Radix was mainly used with the dose of 3.73 g and combined with Glycyrrhizae Radix et Rhizoma to consolidate exterior and stop sweating. In the treatment of apoplexy, Astragali Radix was mainly used with the dose of 7.46 g and combined with Glycyrrhizae Radix et Rhizoma to dispell wind and stop convulsions. Astragali Radix can be used in the treatment of multiple system diseases, with the effects of tonifying Qi and ascending Yang, consolidating exterior and stopping sweating, and expressing toxin and promoting granulation. According to the manifestations of different diseases, when combined with other medicines, Astragali Radix was endowed with the effects of promoting granulation and healing up sores, tonifying deficiency and Qi, consolidating exterior and stopping sweating, and dispelling wind and replenishing Qi. The findings provide a theoretical reference and a scientific basis for the clinical application of Astragali Radix and the development of new medicines.
Drugs, Chinese Herbal/history*
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Humans
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Medicine, Chinese Traditional/history*
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History, Ancient
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Astragalus Plant/chemistry*
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China
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Astragalus propinquus
6.Medication rules and mechanisms of treating chronic renal failure by Jinling medical school based on data mining, network pharmacology, and experimental validation.
Jin-Long WANG ; Wei WU ; Yi-Gang WAN ; Qi-Jun FANG ; Yu WANG ; Ya-Jing LI ; Fee-Lan CHONG ; Sen-Lin MU ; Chu-Bo HUANG ; Huang HUANG
China Journal of Chinese Materia Medica 2025;50(6):1637-1649
This study aims to explore the medication rules and mechanisms of treating chronic renal failure(CRF) by Jinling medical school based on data mining, network pharmacology, and experimental validation systematically and deeply. Firstly, the study selected the papers published by the inherited clinicians in Jinling medical school in Chinese journals using the subject headings named "traditional Chinese medicine(TCM) + chronic renal failure", "TCM + chronic renal inefficiency", or "TCM + consumptive disease" in China National Knowledge Infrastructure, Wanfang, and VIP Chinese Science and Technology Periodical Database and screened TCM formulas for treating CRF according to inclusion and exclusion criteria. The study analyzed the frequency of use of single TCM and the four properties, five tastes, channel tropism, and efficacy of TCM used with high frequency and performed association rule and clustering analysis, respectively. As a result, a total of 215 TCM formulas and 235 different single TCM were screened, respectively. The TCM used with high frequency included Astragali Radix, Rhei Radix et Rhizoma, Salviae Miltiorrhizae Radix et Rhizoma, Poria, and Atractylodis Macrocephalae Rhizoma(top 5). The single TCM characterized by "cold properties, sweet flavor, and restoring spleen channel" and the TCM with the efficacy of tonifying deficiency had the highest frequency of use, respectively. Then, the TCM with the rules of "blood-activating and stasis-removing" and "diuretic and dampness-penetrating" appeared. In addition, the core combination of TCM [(Hexin Formula, HXF)] included "Astragali Radix, Rhei Radix et Rhizoma, Poria, Salviae Miltiorrhizae Radix, and Angelicae Sinensis Radix". The network pharmacology analysis showed that HXF had 91 active compounds and 250 corresponding protein targets including prostaglandin-endoperoxide synthase 2(PTGS2), PTGS1, sodium voltage-gated channel alpha subunit 5(SCN5A), cholinergic receptor muscarinic 1(CHRM1), and heat shock protein 90 alpha family class A member 1(HSP90AA1)(top 5). Gene Ontology(GO) function analysis revealed that the core targets of HXF predominantly affected biological processes, cellular components, and molecular functions such as positive regulation of transcription by ribonucleic acid polymerase Ⅱ and DNA template transcription, formation of cytosol, nucleus, and plasma membrane, and identical protein binding and enzyme binding. Kyoto Encyclopedia of Genes and Genomes(KEGG) analysis revealed that CRF-related genes were involved in a variety of signaling pathways and cellular metabolic pathways, primarily involving "phosphatidylinositol 3-kinase(PI3K)-protein kinase B(Akt) pathway" and "advanced glycation end products-receptor for advanced glycation end products". Molecular docking results showed that the active components in HXF such as isomucronulatol 7-O-glucoside, betulinic acid, sitosterol, and przewaquinone B might be crucial in the treatment of CRF. Finally, a modified rat model with renal failure induced by adenine was used, and the in vivo experimental confirmation was performed based on the above-mentioned predictions. The results verify that HXF can regulate mitochondrial autophagy in the kidneys and the PI3K-Akt-mammalian target of rapamycin(mTOR) signaling pathway activation at upstream, so as to alleviate renal tubulointerstitial fibrosis and then delay the progression of CRF.
Data Mining
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Drugs, Chinese Herbal/chemistry*
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Network Pharmacology
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Humans
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Kidney Failure, Chronic/metabolism*
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Medicine, Chinese Traditional
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China
7.Unmet Need for Palliative Care in Pediatric Hematology/Oncology Populations
Yi-Lun WANG ; Wan-Ju LEE ; Tsung-Yen CHANG ; Shih-Hsiang CHEN ; Chia-Chi CHIU ; Yi-Wen HSIAO ; Yu-Chuan WEN ; Tang-Her JAING
Clinical Pediatric Hematology-Oncology 2025;32(1):19-22
Background:
Delivering a poor prognosis to patients and their families is critically challenging in pediatric populations. The application of palliative care (PC) provides a bridge between accepting the occurrence of mortality and offering lifelong support.However, little is known about the specifics of PC. This study aims to explore the unmet need for PC in pediatric populations.
Methods:
We retrospectively reviewed the medical records of mortality cases in the Department of Pediatric Hematology and Oncology at Chang Gung Memorial Hospital. Statistical tests, including Chi-square and Student’s t-tests, were applied to determine the differences between early and late intervention groups in terms of the timing of PC introduction.
Results:
During the study period, 41 patients were included. Their median age was 11.8 years (IQR, 7.6-15.9). The majority of the disease statuses were refractory or relapsing (R/R). The incidence of memento application was significantly higher in the early intervention group (47.6% vs. 10%, P=0.0081). Vital signs variations tended to be end-of-life (EoL) indicators in this study.
Conclusion
The early introduction of PC encourages families to accompany their beloved child. EoL signs in the pediatric population include vital sign variations. With the presence of relevant EoL signs, clinical physicians can apply PC earlier to meet the needs.
8.Ras Guanine Nucleotide-Releasing Protein-4 Inhibits Erythropoietin Production in Diabetic Mice with Kidney Disease by Degrading HIF2A
Junmei WANG ; Shuai HUANG ; Li ZHANG ; Yixian HE ; Xian SHAO ; A-Shan-Jiang A-NI-WAN ; Yan KONG ; Xuying MENG ; Pei YU ; Saijun ZHOU
Diabetes & Metabolism Journal 2025;49(3):421-435
Background:
In acute and chronic renal inflammatory diseases, the activation of inflammatory cells is involved in the defect of erythropoietin (EPO) production. Ras guanine nucleotide-releasing protein-4 (RasGRP4) promotes renal inflammatory injury in type 2 diabetes mellitus (T2DM). Our study aimed to investigate the role and mechanism of RasGRP4 in the production of renal EPO in diabetes.
Methods:
The degree of tissue injury was observed by pathological staining. Inflammatory cell infiltration was analyzed by immunohistochemical staining. Serum EPO levels were detected by enzyme-linked immunosorbent assay, and EPO production and renal interstitial fibrosis were analyzed by immunofluorescence. Quantitative real-time polymerase chain reaction and Western blotting were used to detect the expression of key inflammatory factors and the activation of signaling pathways. In vitro, the interaction between peripheral blood mononuclear cells (PBMCs) and C3H10T1/2 cells was investigated via cell coculture experiments.
Results:
RasGRP4 decreased the expression of hypoxia-inducible factor 2-alpha (HIF2A) via the ubiquitination–proteasome degradation pathway and promoted myofibroblastic transformation by activating critical inflammatory pathways, consequently reducing the production of EPO in T2DM mice.
Conclusion
RasGRP4 participates in the production of renal EPO in diabetic mice by affecting the secretion of proinflammatory cytokines in PBMCs, degrading HIF2A, and promoting the myofibroblastic transformation of C3H10T1/2 cells.
9.Icariside Ⅱ Inhibits Hepatitis B Virus and Modulates Mitochondrial Fission in vitro
Zhengyun LIU ; Juan WEN ; Guoli CHEN ; Wan YU ; Guo LUO ; Qihai GONG ; Huan WANG
Journal of Sichuan University (Medical Sciences) 2025;56(2):382-388
Objective To investigate the in vitro anti-hepatitis B virus(HBV)effects of icariside Ⅱ(ICS Ⅱ)and its impact on mitochondrial fission.Methods HBV-positive hepatocellular carcinoma HepAD38 cells were used as the cellular model.The cytotoxicity of ICS Ⅱ was assessed via CCK8 assay.The secretion levels of HBV surface antigen(HBsAg)and HBV e antigen(HBeAg),as well as HBV DNA copy numbers,were measured by ELISA and qPCR after treatment with ICS Ⅱ alone or ICS Ⅱ in combination with entecavir(ENT).The effects of ICS Ⅱ on mitochondrial morphology and motility were observed using confocal laser scanning microscopy and transmission electron microscopy(TEM).After ICS Ⅱ treatment,Western blot was performed to analyze the expression levels of key proteins involved in mitochondrial dynamics.Additionally,intracellular reactive oxygen species(ROS)production was evaluated via fluorescence staining.Results The CCK8 assay results showed that ICS Ⅱ treatment at 25 μmol/L had no significant effect on cell proliferation after 72 h.ICS Ⅱ significantly inhibited the secretion levels of HBsAg and HBeAg,with the respective inhibition rates reaching 54.90%and 39.65%(P<0.05).Additionally,ICS Ⅱ alone reduced HBV DNA copy numbers by 15.19%,while ENT alone achieved a 34.11%inhibition rate.Notably,ICS Ⅱ in combination with ENT reduced HBV DNA copy numbers by 55.81%(P<0.05).Furthermore,ICS Ⅱ induced mitochondrial shortening and enhanced mitochondrial motility in HepAD38 cells(P<0.05).ICS Ⅱ significantly increased the expression levels of mitochondrial motility-related proteins,including Mfn1,Fis1,and phosphorylated Drp1(ser 616)(P<0.05),while no significant changes were observed in the expression levels of Mfn2,total Drp1,or Drp1(ser 637)(P>0.05).Additionally,ICS Ⅱ significantly suppressed the production of intracellular ROS in HepAD38 cells(P<0.05).Conclusion ICS Ⅱ inhibits HBV replication in HepAD38 cells,and the underlying mechanism may be associated with the promotion of mitochondrial fission and suppression of ROS production.
10.Effectiveness of the integrated schistosomiasis control programme in Sichuan Province from 2015 to 2023
Chen PU ; Yu ZHANG ; Jiajia WAN ; Nannan WANG ; Jingye SHANG ; Liang XU ; Ling CHEN ; Lin CHEN ; Zisong WU ; Bo ZHONG ; Yang LIU
Chinese Journal of Schistosomiasis Control 2025;37(3):284-288
Objective To investigate the effectiveness of the integrated schistosomiasis control programme in Sichuan Province during the stage moving from transmission interruption to elimination (2015—2023), so as to provide insights into formulation of the schistosomiasis control measures during the post-elimination stage. Methods Schistosomiasis control data were retrospectively collected from departments of health, agriculture and rural affairs, forestry and grassland, water resources, and natural resources in Sichuan Province from 2015 to 2023, and a database was created to document examinations and treatments of human and livestock schistosomiasis, and snail survey and control, conversion of paddy fields to dry fields, ditch hardening, rivers and lakes management and building of forests for snail control and schistosomiasis prevention. The completion of schistosomiasis control measures was investigated, and the effectiveness was evaluated. Results A total of 20 545 155 person-times received human schistosomiasis examinations in Sichuan Province during the period from 2015 to 2023, and 232 157 person-times were seropositive, with a reduction in the seroprevalence from 2.10% (44 299/2 107 003) in 2015 to 1.12% (9 361/837 896) in 2023 (χ2 = 7.68, P < 0.001). The seroprevalence of human schistosomiasis appeared a tendency towards a decline in Sichuan Province over years from 2015 to 2023 (b = −8.375, t = −10.052, P < 0.001); however, no egg positive individuals were identified during the period from 2018 to 2023, with the prevalence of human Schistosoma japonicum infections maintained at 0. Expanded chemotherapy was administered to 2 754 515 person-times, and medical assistance of advanced schistosomiasis was given to 6 436 persontimes, with the treatment coverage increasing from 46.80% (827/1 767) in 2015 to 64.87% (868/1 338) in 2023. Parasitological tests for livestock schistosomiasis were performed in 35 113 herd-times, and expanded chemotherapy was administered to 513 043 herd-times, while the number of fenced livestock decreased from 121 631 in 2015 to 103 489 in 2023, with a reduction of 14.92%. Snail survey covered 433 621.80 hm2 in Sichuan Province from 2015 to 2023, with 204 602.81 hm2 treated by chemical control and 4 637.74 hm2 by environmental modifications. The area of snail habitats decreased from the peak of 5 029.80 hm2 in 2016 to 3 709.72 hm2 in 2023, and the actual area of snail habitats decreased from the peak of 8 585.48 hm2 in 2016 to 473.09 hm2 in 2023. The mean density of living snails remained low across the study period except in 2017 (0.62 snails/0.1 m2). Schistosomiasis control efforts by departments of agriculture and rural affairs in Sichuan Province included conversion of paddy fields to dry fields covering 153 346.93 hm2, hardening of 6 110.31 km ditches, building of 70 356 biogas digesters, replacement of cattle with 227 161 sets of machines, and captive breeding of 21 161 070 livestock from 2015 to 2023, and the control efforts by departments of water resources included rivers and lakes management measuring 5 676.92 km and renovation of 2 331 irrigation areas, while the control efforts by departments of forestry and grassland included building of forests for snail control and schistosomiasis prevention covering 23 913.33 hm2, renovation of snail control forests covering 8 720 hm2 and newly building of shelterbelts covering 764 686.67 hm2. All 63 endemic counties (cities and districts) had achieved the criterion for schistosomiasis elimination criteria in Sichuan Province by the end of 2023. Conclusion Following the integrated control efforts from 2015 to 2023, remarkable achievements have been obtained in the schistosomiasis control programme in Sichuan Province, with all endemic counties successfully attaining the schistosomiasis elimination target at the county level.


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