1.Epidemiological characteristics and spatial-temporal clustering of severe fever with thrombocytopenia syndrome in Huai'an City from 2011 to 2024
XIA Wenling ; GAO Qiang ; LI Yang ; CAI Ben ; WAN Chunyu ; CUI Zhizhen ; ZHANG Zheng ; PAN Enchun
Journal of Preventive Medicine 2026;38(1):55-59,65
Objective:
To investigate the epidemiological characteristics and spatial-temporal clustering of severe fever with thrombocytopenia syndrome (SFTS) in Huai'an City, Jiangsu Province from 2011 to 2024, so as to provide a basis for optimizing local SFTS prevention and control strategies, and identifying high-risk areas and key populations.
Methods:
Data on SFTS incidence and deaths in Huai'an City from 2011 to 2024 were collected from the Infectious Disease Reporting Information System of the Chinese Disease Prevention and Control Information System. The reported incidence, mortality, and fatality rates were calculated. Descriptive analysis was performed on temporal, population, and regional distribution. The average annual percent change (AAPC) was used to analyze the trend in the reported incidence of SFTS. Global and local spatial autocorrelation analyses were employed to examine the spatial distribution patterns and spatial association patterns of SFTS incidence while spatio-temporal scanning analyses was used to assess the spatial-temporal clustering of SFTS.
Results:
A total of 337 SFTS cases were reported in Huai'an City from 2011 to 2024, with the reported incidence rising from 0.17/100 000 to 1.88/100 000. There were 20 deaths, with an average annual mortality of 0.03/100 000, and a fatality rate of 5.93%. The incidence showed obvious seasonality, with a peak in May and June (148 cases, accounting for 43.92%). Spring and summer accounted for 107 cases (31.75%) and 159 cases (47.18%), respectively. The reported SFTS cases were mainly male, farmers, and individuals aged ≥41 years, accounting for 56.38%, 79.23%, and 96.74%, respectively. The population distribution of death cases was basically consistent with that of incident cases. Xuyi County was a high-incidence area, with a total of 332 reported cases, accounting for 98.52%. All death cases were reported in this county. Spatial autocorrelation analyses revealed a positive spatial correlation in SFTS incidence from 2019 to 2024, with Moran's I values ranging from 0.214 to 0.336 (all P<0.05). Heqiao Town, Tianquanhu Town, and Guiwu Town in Xuyi County were identified as high-high clustering areas. Spatio-temporal scanning analyses showed that cluster 1 was consistent with the high-high clustering areas, with an aggregation time from the second quarter of 2019 to the second quarter of 2022.
Conclusions
From 2011 to 2024, the reported incidence of SFTS in Huai'an City showed an upward trend, with a high incidence in spring and summer. Males, farmers, and the middle-aged and elderly population were the key populations for prevention and control. Xuyi County was the key area for prevention and control.
2.Analyses of the epidemiological characteristics of multiple pathogens in people aged 14 years and above with acute respiratory infection in Huangpu District of Shanghai from 2015 to 2024
Yun ZHANG ; Yinzi CHEN ; Zhenzi ZUO ; Yu WANG ; Fujie SHEN ; Yuliang HUANG ; Qiang GAO ; Chenyan JIANG ; Yijun WANG
Shanghai Journal of Preventive Medicine 2026;38(2):116-121
ObjectiveTo analyze the epidemiological characteristics of 8 major respiratory pathogens in influenza-like illness (ILI) cases with acute respiratory infections at fever clinics in Huangpu District, Shanghai from 2015 to 2024, and to provide a scientific basis for the prevention and treatment of respiratory diseases. MethodsA retrospective study was conducted in Huangpu District. Individuals meeting the case definition of ILI from 2015 to 2024 was registered. Their nasopharyngeal swabs were collected for pathogen detection. A total of 8 respiratory viruses were tested, including Influenza A virus (Flu A), Influenza B virus (Flu B), adenovirus (ADV), enterovirus/human rhinovirus (EV/HRV), human parainfluenza virus (HPIV), human coronavirus (HCoV), respiratory syncytial virus (RSV), and human metapneumovirus (HMPV). ResultsFrom 2015 to 2019, a total of 344 ILI cases were tested, of which 192 out of 344 cases (55.81%) were tested positive for single respiratory pathogen. From 2023 to 2024, 1 557 ILI cases were tested, with 572 out of 1 557 cases (36.74%) being positive for single pathogen. From 2023 to 2024, the positive rate of single pathogen in ILI cases was significantly lower than that in 2015‒2019 (χ2=42.66, P<0.001). Specifically, the positive rate of Flu A (χ2=74.43, P<0.001) decreased, while that of HPIV (χ2=8.66, P=0.003) increased, both with statistically significant differences. According to the seasonal pattern, the epidemic intensity of Flu A decreased in summer, while that of HPIV increased in summer and autumn. Demographic results showed statistically significant differences in the positive rates of EV/HRV between genders (χ2=22.38, P<0.001), with males exhibiting a higher positive rate than females. No statistically significant differences were identified in the positive rates of single pathogen among different age groups (χ2=4.42, P=0.110). Nevertheless, statistically significant differences were noted when comparing the positive rates of EV/HRV, Flu A, Flu B and HPIV across different age groups (P<0.05). EV/HRV was more commonly detected in the 15‒<25 age group (10.93%), while Flu A and HPIV had the highest positive rates in the ≥60 age group (21.24% and 4.77%). Flu B had the highest positive rate in the 25‒<60 age group (11.26%). 52.63% of cases with co-infections occurred during winter, with the primary pathogens involved being EV/HRV (9 cases) and HCoV (6 cases). The most prevalent combination of co-infection was Flu A with EV/HRV. ConclusionThe prevalence of respiratory pathogens among ILI cases from 2023 to 2024 exhibited notable fluctuations compared to that from 2015 to 2019. Therefore, influenza surveillance should be strengthened, and attention should also be paid to the prevalence of respiratory pathogens such as HPIV. These findings have profound implications for future research, surveillance, vaccine planning, and public health policy making.
3.Effect of piercing electroacupuncture on functional ankle instability
Haitao DONG ; Zhenyang CUI ; Qiang GAO ; Jun LI ; Jing LI
Chinese Journal of Rehabilitation Theory and Practice 2026;32(4):437-444
ObjectiveTo explore the effect of piercing electroacupuncture on ankle muscle strength, dynamic balance and subjective stability in patients with functional ankle instability (FAI). MethodsA total of 48 patients with FAI admitted to the Affiliated Hospital of Traditional Chinese Medicine, Shandong Second Medical University from April, 2024 to July, 2025 were enrolled and randomly divided into control group (n = 24) and experimental group (n = 24). The control group received multimodal functional training, while the experimental group received piercing electroacupuncture in addition, for six weeks. Relative peak torque of ankle plantarflexion, dorsiflexion, inversion and eversion were measured with isokinetic muscle strength testing system before and after treatment, while Y-Balance Test (YBT) and Cumberland Ankle Instability Tool (CAIT) were adopted for evaluation. ResultsOne case dropped out in each group. Relative peak torque of ankle plantarflexion, dorsiflexion, inversion and eversion at each angular velocity, the normalized distance in each direction and composite score of YBT, as well as the score of CAIT increased in both groups after treatment (|t| > 2.891, P < 0.01), while all the indicators were better in the experimental group than in the control group (|t| > 2.104, P < 0.05), except dorsiflexion muscle strength. ConclusionCombination of piercing electroacupuncture can further improve perimalleolar muscle strength, dynamic balance and subjective stability in patients with FAI.
4.Clinical Advantages of Traditional Chinese Medicine in Treatment of Childhood Simple Obesity: Insights from Expert Consensus
Qi ZHANG ; Yingke LIU ; Xiaoxiao ZHANG ; Guichen NI ; Heyin XIAO ; Junhong WANG ; Liqun WU ; Zhanfeng YAN ; Kundi WANG ; Jiajia CHEN ; Hong ZHENG ; Xinying GAO ; Liya WEI ; Qiang HE ; Qian ZHAO ; Huimin SU ; Zhaolan LIU ; Dafeng LONG
Chinese Journal of Experimental Traditional Medical Formulae 2026;32(6):238-245
Childhood simple obesity has become a significant public health issue in China. Modern medicine primarily relies on lifestyle interventions and often suffers from poor long-term compliance, while pharmacological options are limited and associated with potential adverse effects. Traditional Chinese Medicine (TCM) has a long history in the prevention and management of this condition, demonstrating eight distinct advantages, including systematic theoretical foundation, diversified therapeutic approaches, definite therapeutic efficacy, high safety profile, good patient compliance, comprehensive intervention strategies, emphasis on prevention, and stepwise treatment protocols. Additionally, TCM is characterized by six distinctive features: the use of natural medicinal substances, non-invasive external therapies, integration of medicinal dietetics, simple exercise regimens, precise syndrome differentiation, and diverse dosage forms. By combining internal and external treatments, TCM facilitates individualized regimen adjustment and holistic regulation, demonstrating remarkable effects in improving obesity-related metabolic indicators, regulating constitutional imbalance, and promoting healthy behaviors. However, challenges remain, such as inconsistent operational standards, insufficient high-quality clinical evidence, and a gap between basic research and clinical application. Future efforts should focus on accelerating the standardization of TCM diagnosis and treatment, conducting multicenter randomized controlled trials, and fostering interdisciplinary integration, so as to enhance the scientific validity and international recognition of TCM in the prevention and treatment of childhood obesity.
5.Analyses of T lymphocyte subset levels and viral loads in human immunodeficiency virus antibody-confirmed positive cases in Suzhou from 2021 to 2024
Runfang TIAN ; Qiang SHEN ; Xuerong YA ; Yue DAI ; Qian GAO
Shanghai Journal of Preventive Medicine 2026;38(3):210-215
ObjectiveTo investigate the T lymphocyte subset levels and viral loads in newly human immunodeficiency virus (HIV) antibody-confirmed positive cases in Suzhou (2021‒2024), and to analyze potential influencing factors by integrating their demographic characteristics, immune status, and viral replication patterns, thereby providing evidence for HIV/acquired immune deficiency syndrome (AIDS) prevention and control. MethodsPeripheral whole blood samples were collected from newly confirmed HIV-positive cases in Suzhou from 2021 to 2024. T lymphocyte subset analysis and viral load testing were performed, and influencing factors were identified in combination with demographic characteristics. Logistic regression models were employed to identify factors associated with CD4+T lymphocyte counts ≤350 cells·μL-1, and Spearman’s rank correlation test was used to analyze the correlation between logarithmic value of viral load and CD4+/CD8+ ratio. ResultsAmong the 3 022 confirmed HIV-positive samples, the median CD4+T lymphocyte count was 298.00 cells·μL-1, with 882 cases (29.19%) showing CD4+ T lymphocyte counts <200 cells·μL-1. The median CD8+T lymphocyte count was 1 011.00 cells·μL-1. The median CD4+/CD8+ ratio was 0.28, with 32.46% of cases exhibiting CD4+/CD8+ ratios <0.20, and there were statistically significant differences in CD4+/CD8+ ratio among different genders, age groups, marital status, and sample sources (all P<0.05). Multivariate logistic regression analyses indicated that individuals aged ≥20 years, those who were divorced or widowed, and cases identified through medical institutions had a significantly higher proportion of CD4+T lymphocyte counts ≤350 cells·µL⁻¹ compared to those aged <20 years, unmarried individuals, and cases sourced from voluntary counseling and testing (VCT) clinics, respectively. The mean logarithmic value of viral load was (4.29±1.15) copies·mL-1. The logarithmic value of viral load demonstrated a significantly negative correlation with both CD4+/CD8+ ratio (r=-0.43, P<0.001) and CD4+T lymphocyte count (r=-0.37, P<0.001). ConclusionA substantial proportion of newly diagnosed HIV/AIDS cases in Suzhou are late presenters with high viral load levels. Targeted interventions should prioritize high-risk populations through enhanced active surveillance and the implementation of combined T lymphocyte subsets analysis and viral load testing, which can enable earlier case-finding and timely antiretroviral therapy initiation.
6.Guizhi Fulingwan Alleviate Hepatic Fibrosis by Modulating mtDNA/NLRP3/Caspase-1/GSDMD Signaling Pathway
Yu TANG ; Xuli YANG ; Qiang YANG ; Xiaojie WANG ; Yongxiang GAO ; Xueping LI
Chinese Journal of Experimental Traditional Medical Formulae 2026;32(14):91-99
ObjectiveTo investigate the mechanism of Guizhi Fulingwan (GFW) against hepatic fibrosis, focusing on elucidating the regulatory effect of GFW on the mitochondrial DNA (mtDNA)/NOD-like receptor protein 3 (NLRP3)/cysteinyl aspartate-specific proteinase-1 (Caspase-1)/gasdermin D (GSDMD) signaling pathway. MethodsForty-two male Sprague-Dawley (SD) rats were randomly allocated into six groups (n=7): control, model, low/medium/high-dose (0.14, 0.28, 0.56 g·kg-1·d-1) GFW (GFW-L, GFW-M, GFW-H), and Dahuang Zhechong pills (DZW, 1.8 g·kg-1·d-1). The rat model of hepatic fibrosis was induced by intraperitoneal injection of carbon tetrachloride. General conditions of the rats were observed. Serum levels of alanine aminotransferase (ALT) and aspartate aminotransferase (AST) levels were measured. Liver histopathology and collagen deposition were observed through hematoxylin and eosin (HE) staining and Masson's trichrome staining. Transmission electron microscopy (TEM) was employed to observe structural alterations and damage of cellular ultrastructures including mitochondria. Mitochondrial membrane potential (MMP, ΔΨm) was detected by flow cytometry. Serum levels of interleukin-1β (IL-1β) and interleukin-18 (IL-18) were measured by enzyme-linked immunosorbent assay (ELISA). The mRNA levels of mtDNA and NLRP3 in the liver tissue were quantified by Real-time polymerase chain reaction (Real-time PCR). The protein levels of key molecules in the NLRP3/Caspase-1/GSDMD signaling pathway in the liver tissue were determined by Western blot. ResultsCompared with the control group, the model group exhibited a decrease in body weight (P<0.01), an increase in liver index (P<0.01), elevations in serum ALT and AST levels (P<0.01), and typical fibrotic features such as disorganized hepatocytes, inflammatory infiltration, and increased collagen deposition in the liver tissue. TEM revealed significant karyotheca degeneration, mitochondrial swelling, endoplasmic reticulum expansion, and organelle efflux in the model group. In addition, the model group showed decreased ΔΨm (P<0.01), up-regulated mRNA levels of mtDNA and NLRP3 (P<0.01) and protein levels of NLRP3, Caspase-1, and GSDMD (P<0.01) in the liver tissue, and increased serum levels of IL-1β and IL-18 (P<0.01). Compared with that in the model group, the body weight increased in GFW-L, GFW-M, and DZW groups (P<0.05) and markedly increased in the GFW-H group (P<0.01). The liver index decreased in the GFW groups and DZW group (P<0.01). The serum ALT level declined in the GFW-L group (P<0.05), and the serum ALT and AST levels decreased in the GFW-M, GFW-H, and DZW groups (P<0.01). Histopathological damage and fibrosis were alleviated to varying degrees, and TEM revealed mitigated ultrastructural injuries including mitophagy, mitochondrial swelling, and endoplasmic reticulum expansion in the drug intervention groups. The ΔΨm increased in GFW groups without statistical significance. The mRNA level of mtDNA in the liver tissue was down-regulated in the GFW-M (P<0.05), GFW-H (P<0.01), and DZW (P<0.01) groups. The mRNA level of NLRP3 was down-regulated in GFW-M, GFW-H, and DZW groups (P<0.01). Western blot analysis showed significantly down-regulated protein level of NLRP3 in all the GFW groups and the DZW group (P<0.01). The protein level of GSDMD-N was down-regulated in GFW-H and DZW groups (P<0.01). The protein level of cleaved Caspase-1 was down-regulated in GFW-M (P<0.05), GFW-H (P<0.01), and DZW (P<0.01) groups. In addition, the serum levels of IL-1β and IL-18 declined in GFW-H and DZW groups (P<0.01). ConclusionGFW can suppress pyroptosis to ameliorate CCl4-induced hepatic fibrosis, potentially through mitigating mitochondrial damage, inhibiting inflammasome assembly and activation, and blocking pro-inflammatory cytokine release.
7.Chinese expert consensus on postoperative follow-up for non-small cell lung cancer (version 2025)
Lunxu LIU ; Shugeng GAO ; Jianxing HE ; Jian HU ; Di GE ; Hecheng LI ; Mingqiang KANG ; Fengwei TAN ; Fan YANG ; Qiang PU ; Kaican CAI
Chinese Journal of Clinical Thoracic and Cardiovascular Surgery 2025;32(03):281-290
Surgical treatment is one of the key approaches for non-small cell lung cancer (NSCLC). Regular postoperative follow-up is crucial for early detection and timely management of tumor recurrence, metastasis, or second primary tumors. A scientifically sound and reasonable follow-up strategy not only extends patient survival but also significantly improves quality of life, thereby enhancing overall prognosis. This consensus aims to build upon the previous version by incorporating the latest clinical research advancements and refining postoperative follow-up protocols for early-stage NSCLC patients based on different treatment modalities. It provides a scientific and practical reference for clinicians involved in the postoperative follow-up management of NSCLC. By optimizing follow-up strategies, this consensus seeks to promote the standardization and normalization of lung cancer diagnosis and treatment in China, helping more patients receive high-quality care and long-term management. Additionally, the release of this consensus is expected to provide insights for related research and clinical practice both domestically and internationally, driving continuous development and innovation in the field of postoperative management for NSCLC.
8.Mechanism of Huoxue Rongluo Prescription Regulating Bmal1 Gene to Promote Blood-brain Barrier Repair After Ischemic Stroke
Yuanchen LIAO ; Desheng ZHOU ; Qiang MA ; Lei LUO ; Menghao HE ; Lijuan LIU ; Xiaofeng GAO
Chinese Journal of Experimental Traditional Medical Formulae 2025;31(22):40-50
ObjectiveTo explore the mechanism of Huoxue Rongluo prescription (HXRLP) in repairing the blood-brain barrier (BBB) after ischemic stroke (IS). MethodsMale C57BL/6 mice were randomly divided into sham operation (Sham) group, cerebral infarction model (MCAO) group, environmental circadian disruption with cerebral infarction model (ECD-MCAO) group, low-, medium-, and high-dose HXRLP (HXRLP-L, M, and H) groups (8.5, 17, 34 g·kg-1·d-1, respectively), and positive drug butylphthalide (NBP) group (0.23 mL·d-1). In the Sham group, only the exposed blood vessels were isolated without suture insertion. In the other groups, the middle cerebral artery occlusion (MCAO) model of mice was prepared. In the ECD-MCAO group, HXRLP groups, and NBP group, the environmental circadian disruption (ECD) model was prepared. The mice in the Sham group, MCAO group, and ECD-MCAO group were given the same volume of soybean oil by gavage, while those in the other groups were given the corresponding drugs by gavage. Samples were collected after 7 consecutive days of administration. The mNSS score was used to evaluate the repair effect of HXRLP on neurological deficits after IS. Hematoxylin-eosin (HE) staining was used to assess the impact of HXRLP on the pathological damage of brain tissue after IS. 2,3,5-Triphenyltetrazolium chloride (TTC) staining and cerebral blood perfusion status were used to evaluate the repair effect of HXRLP on brain tissue damage after IS. Evans blue staining and transmission electron microscopy were used to evaluate the improvement effect of HXRLP on the permeability injury of BBB after IS. Immunofluorescence (IF) staining was used to observe the expression of von Willebrand Factor (vWF), brain and muscle Arnt-like 1 (Bmal1), and Occludin in brain tissue. Western blot was used to detect the protein expression of Bmal1, Occludin, tight junction protein (Claudin-5), vascular endothelial growth factor (VEGF), and angiopoietins(Ang), and related analysis was conducted. ResultsCompared with the Sham group, the MCAO group exhibited significantly aggravated neurological deficits, cerebral infarction volume, brain pathological damage, and BBB leakage (P0.01) and significantly reduced cerebral blood perfusion (P0.01). The expression of Bmal1, vWF, vascular endothelial growth factor A (VEGFA), and Ang in brain tissue was significantly enhanced (P0.01), while the expression of Occludin and Claudin-5 was significantly weakened (P0.01). Compared with the MCAO group, the ECD-MCAO group showed significantly aggravated neurological deficits, cerebral infarction volume, and BBB leakage (P0.01), obviously worsened brain pathological damage (P0.05), significantly reduced cerebral blood perfusion (P0.01), and significantly decreased expression of Bmal1, vWF, VEGFA, Ang, Occludin, and Claudin-5 in brain tissue (P0.01). Compared with the ECD-MCAO group, the HXRLP groups of all doses presented significantly improved neurological deficits, cerebral infarction volume, brain pathological damage, and BBB leakage (P0.01), significantly increased cerebral blood perfusion (P0.01), and enhanced expression levels of Bmal1, vWF, VEGFA, Ang, Occludin, and Claudin-5 in brain tissue (P0.01). ConclusionHXRLP can regulate the clock protein Bmal1 and promote the expression of VEGFA, Ang, Occludin, and Claudin-5, thereby improving BBB damage after IS.
9.Active surveillance of drug safety and influential factors in pediatric patients with Mycoplasma pneumoniae pneumonia
Yuefeng WANG ; Qiang GAO ; Ke QIN
China Pharmacy 2025;36(22):2838-2844
OBJECTIVE To analyze adverse drug reactions (ADRs) in pediatric patients with Mycoplasma pneumoniae pneumonia (MPP), and investigate the influential factors associated with the occurrence of ADRs. METHODS Clinical records of pediatric patients with MPP in Xinxiang Central Hospital (hereinafter referred to as “our hospital”) from Oct. 1st, 2023 to Sept. 30th, 2024 collected from the Hospital Information System were retrospectively reviewed using the global trigger tool (GTT). The positive triggers were further reviewed to confirm the occurrence of ADRs, and the characteristics of those ADRs were analyzed. The children were divided into the ADR group and the non-ADR group. Univariate analysis and multivariate Logistic regression analysis were performed to investigate the potential influential factors for ADRs in MPP children. RESULTS A total of 1 325 MPP children were included. Out of 24 designed triggers, 14 were positive, with a positive trigger rate of 58.3%. There were 1 301 positive trigger cases, involving 846 pediatric patients. After assessment, 399 cases of ADRs were identified in 372 pediatric patients, yielding a positive predictive value of triggers at 30.7%. The main types of ADRs were abnormal blood cells (230 cases, 57.6%), skin and its appendages damage (78 cases, 19.5%), and gastrointestinal system damage (42 cases, 10.5%), which predominantly occurred 4 days or more, within 2-3 days and within 2-3 days after medication, respectively. They were more prevalent in pediatric patients aged>3-10 years (295 cases, 79.3%). The major categories of drugs associated with ADRs included intravenous corticosteroids (209 cases), cephalosporins (180 cases), macrolides (38 cases), tetracyclines (28 cases) and traditional Chinese medicine (TCM) injections (28 cases). These ADR reports were classified into 3 types: 1 serious case, 394 general cases and 4 new cases. In terms of causality assessment, 1 case was assessed as certain, 19 cases as probable, and 379 cases as possible. In terms of ADR outcomes, 151 cases fully recovered, while the outcomes for 248 cases remained unknown. Univariate analysis and multivariate Logistic regression analysis revealed that a history of allergies [OR=5.231, 95%CI (2.004, 13.656), P<0.05], the number of medications used [OR=1.064, 95%CI (1.027, 1.103), P<0.05], and intravenous corticosteroid administration [OR=3.223, 95%CI (2.341, 4.437), P<0.05] were independent risk factors of ADRs in pediatric patients with MPP. The use of azithromycin [OR=0.544, 95%CI (0.376, 0.786), P<0.05] was identified as an independent protective factor against the occurrence of ADRs in pediatric patients with MPP. CONCLUSIONS Children with MPP in our hospital exhibit a higher incidence of ADRs, primarily involving abnormal blood cells, skin and its appendages damage, and gastrointestinal system damage. A history of allergies, the number of medications used, intravenous corticosteroid administration, and the use of azithromycin are associated with the occurrence of ADR in MPP pediatric patients.
10.Epidemiological characteristics of scrub typhus in Huai'an, Jiangsu Province in 2006 - 2024
Lei XU ; Zhizhen CUI ; Qiang GAO ; Hao JU ; Chuanyu WAN ; Ranfeng HANG ; Shiyao WU ; Ben CAI ; Zheng ZHANG ; Haiyan GE
Journal of Public Health and Preventive Medicine 2025;36(6):39-42
Objective To describe and analyze the epidemiological characteristics of scrub typhus in Huai'an, Jiangsu Province from 2006 to 2024 and explore the long-term incidence trend and distribution of high-risk areas, and to formulate targeted prevention and control strategies. Methods The scrub typhus case report data of Huai'an from 2006 to 2024 in the Chinese Disease Prevention and Control Information System were extracted for descriptive analysis. Results A total of 898 cases of scrub typhus were reported in Huai'an, with an average annual incidence rate of 0.96 per 100 000 from 2006 to 2024. There was a turning point in the incidence trend of scrub typhus in 2011. From 2006 to 2011, the annual percentage change (APC) was 47.09% (95% CI: 7.53 - 859.39), and the upward trend was statistically significant (P < 0.05). From 2012 to 2024, the APC was -2.12% (95% CI: -29.09 - 3.75), and the downward trend was not statistically significant. October and November were the high-incidence months, and the total concentration from 2006 to 2024 was 0.93, indicating that scrub typhus had strict seasonality. The circular distribution method estimated that the peak period of the epidemic was from October 11th to November 25th, and the peak day of incidence was November 3rd. Jinhu County was a high-incidence area. The ratio of male to female cases was 1.03. The age group with the highest reported incidence was 40 to < 80 years old. The occupation with the highest proportion was farmers, accounting for 78.03%. Conclusion From 2006 to 2024, scrub typhus in Huai'an shows a peak every 3 - 4 years. Middle-aged and elderly farmers are the key population at risk, and Jinhu County is a key area. In the future, targeted health education should be carried out to effectively control the prevalence of scrub typhus.


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