1.Clinical Efficacy of Shenqi Yangxin Decoction in Treatment of Patients with Ischemic Cardiomyopathy and Its Effect on Serum H2S and Ca2+
Zhuojun ZHANG ; Lijuan SHEN ; Hongyi LAN ; Jiajing ZHAO ; Liyang SHEN ; Tiantian HUANG ; Shuai ZHANG ; Xiaodong TAN ; Shu LU
Chinese Journal of Experimental Traditional Medical Formulae 2026;32(11):210-217
ObjectiveTo evaluate the clinical efficacy of Shenqi Yangxin decoction in the treatment of ischemic cardiomyopathy (ICM) with Qi and Yin deficiency and blood stasis syndrome and its effect on serum hydrogen sulfide (H2S) and calcium ion (Ca2+). MethodsA total of 64 ICM patients with Qi and Yin deficiency and blood stasis syndrome who met the inclusion criteria were randomly divided into a control group (n=32) and a treatment group (n=32). All patients received conventional Western medicine treatment. The treatment group was additionally given Shenqi Yangxin decoction. The TCM syndrome score, Minnesota Living with Heart Failure Questionnaire (MLHFQ) score, left ventricular ejection fraction (LVEF), N-terminal pro-B-type natriuretic peptide (NT-proBNP), 6-minute walk test (6MWT), New York Heart Association (NYHA) cardiac function classification, and serum H2S and Ca2+ levels were compared between the two groups pre- and post-treatment. ResultsTwo cases dropped out from each group during the study. Finally, 30 patients in each group were included in the analysis. There were no significant differences in age, gender, course of coronary heart disease, underlying diseases, and laboratory tests between the two groups. Compared with baseline, the TCM syndrome score, MLHFQ score, and NT-proBNP in both treatment group and control group decreased significantly (P<0.01), LVEF, 6MWT, and H2S increased significantly (P<0.01), and serum Ca2+ increased (P<0.05). Compared with the control group after treatment, the MLHFQ score and NT-proBNP in the treatment group decreased (P<0.05), the TCM syndrome score decreased significantly (P<0.01), LVEF, 6MWT, and serum Ca2+ increased (P<0.05), and H2S increased significantly (P<0.01). The improvement degree of the NYHA cardiac function classification in the treatment group was higher than that in the control group, but there was no significant difference. ConclusionShenqi Yangxin decoction is effective in treating ICM patients with Qi and Yin deficiency and blood stasis, which could significantly improve cardiac function and quality of life, and its therapeutic effect may be related to the regulation of serum H2S and Ca2+ levels.
2.Cognitive function and its influencing factors in patients with psoriasis
Wenya DENG ; Yi ZHANG ; Yi JIANG ; Yangfeng DING ; Jiajing LU ; Guojiang ZHOU
Chongqing Medicine 2025;54(3):639-645
Objective To evaluate cognitive function and its influencing factors in psoriasis patients.Methods A total of 129 patients with psoriasis who were admitted to the Psoriasis Diagnosis and Treatment Center of the Dermatology Department of the hospital from August 2022 to August 2023 were selected as the study objects.General data questionnaire and the Montreal Cognitive Assessment-Basic Scale(MoCA-B)were used to investigate cognitive function,and the status quo of cognitive function and influencing factors of psori-asis patients were analyzed.Results The subjects had a total cognitive function score of 12 to 30.There were 90 cases(69.77%)with normal cognitive function and 39 cases(30.23%)with cognitive impairment.Execu-tive function,verbal fluency,computation,abstract thinking,memory,visual perception,naming,attention and MoCA-B scores in patients with cognitive impairment were lower than in patients with normal cognitive func-tion(P<0.05).Logistic regression analysis showed that age(OR=1.059),years of education(OR=0.855)and pathogenesis(OR=0.185)were the factors affecting the cognitive function of psoriasis patients(P<0.05).Conclusion Pay attention to the cognitive screening of patients with psoriasis and provide cognitive in-tervention early.
3.The value of sequential organ failure assessment and its dynamic changes in predicting mortality in hematology intensive care unit
Jiajing WANG ; Jian ZHANG ; Bin ZHANG ; Yuncong CAO ; Yilin GUO ; Peiran YU ; Xiaoqing ZHANG ; Xiaojuan ZHANG ; Yijun SONG
Chinese Journal of Hematology 2025;46(1):31-38
Objective:To investigate the value of Sequential Organ Failure (SOFA) score and its dynamics (ΔSOFA) in predicting mortality in hematology care unit (HCU) .Methods:A retrospective clinical study was conducted on 79 critically ill hematologic patients admitted to the Center for Critical Care Medicine, Institute of Hematology & Blood Diseases Hospital, Chinese Academy of Medical Sciences, between May and June 2024. SOFA scores and ΔSOFA were calculated within 2 days before and after HCU admission. The predictive value of SOFA and ΔSOFA in mortality was assessed using receiver operating characteristic (ROC) curve analysis.Results:Among the 79 patients, the HCU mortality rate was 54.4%. The SOFA scores on days 1–3 (D1, D2, and D3) and ΔSOFA on day 1 (ΔD_1) of all patients, leukemia patients and hematopoietic stem cell transplantation (HSCT) patients were significantly higher in the death group compared with the non-death group (all P<0.05). ROC curve analysis revealed that the D_1, D_2, D_3 scores, and ΔD_1 significantly predicted mortality ( P<0.001), with areas under the curve (AUCs) of 0.786, 0.866, 0.901, and 0.843, respectively. The sensitivity values were 74.36%, 57.89%, 62.85%, and 86.84%, while specificity values were 70%, 100%, 100%, and 67.65%, respectively. In the HSCT group, the D_-1, D_1, D_2, D_ 3, scores and ΔD_1 were predictive of HCU mortality, with AUCs of 0.833, 0.794, 0.871, 0.846, and 0.795, respectively. Sensitivity values for these scores were 100%, 85.71%, 71.43%, 57.14%, and 57.14%, while specificity values were 73.33%, 70.59%, 91.33%, 100%, and 100%, respectively. In the leukemia group, the D_1, D_2, D_3 scores, and ΔD_1 were predictive of HCU mortality, with AUCs of 0.760, 0.829, 0.846, and 0.756, respectively. Sensitivity values were 71.43%, 78.57%, 53.85%, and 71.43%, while specificity values were 76.19%, 78.95%, 100%, and 63.16%, respectively. For all patients, the D_3 score exhibited the highest specificity, while the ΔD_1 demonstrated the highest sensitivity. For patients in both the HSCT and leukemia groups, the sensitivity and specificity values of the D_1 and D_3 scores exceeded those of the ΔD_1. Conclusion:For patients with hematologic critical illness, including leukemia and those undergoing HSCT hospitalized in the HCU, D_1, D_2, D_ 3 scores and ΔD_1 are significantly associated with HCU mortality.
4.Effectiveness of the integrated schistosomiasis control programme in Wuhan City from 2005 to 2023
Shuai WANG ; Huatang LUO ; Yang LI ; Hao WANG ; Cong LIU ; Yuelin XIONG ; Jiajing ZHANG ; Wen ZHU
Chinese Journal of Schistosomiasis Control 2025;37(2):176-183
Objective To evaluate the effectiveness of the integrated schistosomiasis control programme in Wuhan City from 2005 to 2023, so as to provide insights into precision control and elimination of schistosomiasis. Methods The integrated measures for schistosomiasis control implemented by health, agriculture, water resources, and forestry departments of Wuhan City, and the epidemiological data of schistosomiasis in Wuhan City were collected from 2005 to 2023, and the prevalence of human schistosomiasis, prevalence of Schistosoma japonicum infections in humans and bovines, areas of S. japonicum-infected snail habitats, areas of snail habitats in inner embankments, and actual areas of snail habitats were retrieved. In addition, the trends in prevalence of schistosomiasis in humans and livestock and snail status were evaluated in Wuhan City from 2005 to 2023 using Mann-Kendall test and a Joinpoint regression model. Results Mann-Kendall test revealed a tendency towards a decline in the prevalence of human schistosomiasis (Z = -4.41, P < 0.01), prevalence of S. japonicum infections in humans (Z = -4.89, P < 0.01) and bovines (Z = -4.50, P < 0.01), areas of S. japonicum-infected snail habitats (Z = -3.91, P < 0.01), areas of snail habitats in inner embankments (Z = -2.28, P = 0.02), and actual areas of snail habitats (Z = -5.95, P < 0.01) in Wuhan City from 2005 to 2023. Joinpoint regression analysis showed an average annual reduction of 8.58% in the prevalence of human schistosomiasis in Wuhan City from 2005 to 2023 [average annual percent change (AAPC) = -8.58%, 95% confidence interval (CI): (-10.02%, -6.65%), P < 0.01], with two joinpoints in 2013 and 2016, respectively, and the tendency towards a decline showed statistical significance during the period from 2013 through 2016 [annual percent change (APC) = -34.41%, 95% CI: (-40.36%, -20.01%), P < 0.01]. The prevalence of S. japonicum human infections appeared an average annual reduction of 51.91% in Wuhan City from 2005 to 2023 [AAPC = -51.91%, 95% CI: (-58.12%, -44.25%), P < 0.01], with two joinpoints in 2014 and 2017, respectively, and the tendency towards a decline showed statistical significance during the period from 2014 through 2017 [APC = -98.17%, 95% CI: (-99.17%, -90.87%), P < 0.01]. The prevalence of S. japonicum infections in bovines appeared an average annual reduction of 53.12% in Wuhan City from 2005 to 2023 [AAPC = -53.12%, 95% CI: (-59.65%, -42.44%), P < 0.01], with two joinpoints in 2011 and 2014, respectively, and the tendency towards a decline showed statistical significance during the period from 2014 through 2017 [APC = -98.63%, 95% CI: (-99.44%, -90.93%), P < 0.01]. The areas of S. japonicum-infected snail habitats appeared an average annual reduction of 47.09% in Wuhan City from 2005 to 2023 [AAPC = -47.09%, 95% CI: (-52.92%, -38.26%), P < 0.01], with two joinpoints in 2011 and 2014, respectively, and the tendency towards a decline showed statistical significance during the period from 2011 through 2014 [APC = -97.27%, 95% CI: (-98.65%, -88.06%), P < 0.01]. The areas of snail habitats in inner embankments appeared an average annual reduction of 4.45% in Wuhan City from 2005 to 2023 [AAPC = -4.45%, 95% CI: (-5.18%, -3.82%), P < 0.01], with three joinpoints in 2011, 2015 and 2018, respectively, and statistical significance was seen in the tendency towards a decline during the period from 2005 through 2011 [APC = -16.38%, 95% CI: (-20.15%, -14.25%), P < 0.01]. In addition, the actual areas of snail habitats appeared an average annual reduction of 2.65% in Wuhan City from 2005 to 2023 [AAPC = -2.65%, 95% CI: (-2.89%, -2.40%), P < 0.01], with a joinpoint in 2013, and the tendency towards a decline showed statistical significance during the period from 2013 through 2023 [APC = -4.06%, 95% CI: (-4.66%, -3.58%), P < 0.01]. Conclusions The integrated schistosomiasis control programme achieved significant effectiveness in Wuhan City from 2005 to 2023, with a tendency towards a decline in morbidity due to schistosomiasis in humans and livestock and snail status. The integrated schistosomiasis control strategy with emphasis on management of the source of S. japonicum infections should continue to be implemented to consolidate the schistosomiasis control achievements and achieve the goal of schistosomiasis elimination in the city.
5.Effect of daidzein on mammary gland development in mice during pregnancy
Xinhe HUNAG ; Xiao ZHOU ; Jiajing XU ; Gang WU ; Yuanshu ZHANG
Chinese Journal of Veterinary Science 2025;45(2):362-368,378
The aim of this experiment was to investigate the effects of daidzein(DZ)on mammary gland development in mice during pregnancy.A total of 36 pregnant mice were randomly divided into a control group(treated with sterile PBS),a DZ group(DZ working fluid by intraperitoneal injection)and a E2 group(E2 working fluid by intraperitoneal injection),once daily,for 7 days.Af-ter normal delivery of pregnant mice,6 mice were selected from each group on the 1st and 10th day of the lactation period,then executed after blood sampling,and all mammary gland tissue were taken for the following experiments:1)mammary gland tissue was weighted and the mammary gland index was calculated;preparation of mammary gland tissue sections,HE staining;2)ELISA of estradiol,prolactin and insulin-like growth factor concentrations in serum;3)Western blot and RT-qPCR were used to analyze the expression of cell cyclin proteins and ER-a,ER-β proteins and genes in mammary gland tissues.The results showed that:compared with control group,DZ signif-icantly increased the area ratio of acinar in the mammary gland of mice(P<0.05),decreased the area ratio of adipose tissue and increased proliferative expansion of adenohypophysis;DZ highly significantly increased serum PRL levels(P<0.01)and serum IGF-1 content,reduced serum E2 levels;DZ significantly up-regulated the expression of CyclinD1,CyclinD3,PCNA and ER-β pro-teins(P<0.05),and the mRNA level of ER-β gene was significantly up-regulate(P<0.01).In conclusion,DZ can promote cell proliferation and division by increasing the expression of cell cycle proteins and proliferation proteins,promotes the proliferation of mammary gland follicles and in-creases mammary gland weight during pregnancy in mice,and at the same time increase the serum levels of IGF-1 and PRL in the female rats,which jointly promote the development of the mamma-ry glands during lactation.
6.Effect of daidzein on mammary gland development in mice during pregnancy
Xinhe HUNAG ; Xiao ZHOU ; Jiajing XU ; Gang WU ; Yuanshu ZHANG
Chinese Journal of Veterinary Science 2025;45(2):362-368,378
The aim of this experiment was to investigate the effects of daidzein(DZ)on mammary gland development in mice during pregnancy.A total of 36 pregnant mice were randomly divided into a control group(treated with sterile PBS),a DZ group(DZ working fluid by intraperitoneal injection)and a E2 group(E2 working fluid by intraperitoneal injection),once daily,for 7 days.Af-ter normal delivery of pregnant mice,6 mice were selected from each group on the 1st and 10th day of the lactation period,then executed after blood sampling,and all mammary gland tissue were taken for the following experiments:1)mammary gland tissue was weighted and the mammary gland index was calculated;preparation of mammary gland tissue sections,HE staining;2)ELISA of estradiol,prolactin and insulin-like growth factor concentrations in serum;3)Western blot and RT-qPCR were used to analyze the expression of cell cyclin proteins and ER-a,ER-β proteins and genes in mammary gland tissues.The results showed that:compared with control group,DZ signif-icantly increased the area ratio of acinar in the mammary gland of mice(P<0.05),decreased the area ratio of adipose tissue and increased proliferative expansion of adenohypophysis;DZ highly significantly increased serum PRL levels(P<0.01)and serum IGF-1 content,reduced serum E2 levels;DZ significantly up-regulated the expression of CyclinD1,CyclinD3,PCNA and ER-β pro-teins(P<0.05),and the mRNA level of ER-β gene was significantly up-regulate(P<0.01).In conclusion,DZ can promote cell proliferation and division by increasing the expression of cell cycle proteins and proliferation proteins,promotes the proliferation of mammary gland follicles and in-creases mammary gland weight during pregnancy in mice,and at the same time increase the serum levels of IGF-1 and PRL in the female rats,which jointly promote the development of the mamma-ry glands during lactation.
7.The value of sequential organ failure assessment and its dynamic changes in predicting mortality in hematology intensive care unit
Jiajing WANG ; Jian ZHANG ; Bin ZHANG ; Yuncong CAO ; Yilin GUO ; Peiran YU ; Xiaoqing ZHANG ; Xiaojuan ZHANG ; Yijun SONG
Chinese Journal of Hematology 2025;46(1):31-38
Objective:To investigate the value of Sequential Organ Failure (SOFA) score and its dynamics (ΔSOFA) in predicting mortality in hematology care unit (HCU) .Methods:A retrospective clinical study was conducted on 79 critically ill hematologic patients admitted to the Center for Critical Care Medicine, Institute of Hematology & Blood Diseases Hospital, Chinese Academy of Medical Sciences, between May and June 2024. SOFA scores and ΔSOFA were calculated within 2 days before and after HCU admission. The predictive value of SOFA and ΔSOFA in mortality was assessed using receiver operating characteristic (ROC) curve analysis.Results:Among the 79 patients, the HCU mortality rate was 54.4%. The SOFA scores on days 1–3 (D1, D2, and D3) and ΔSOFA on day 1 (ΔD_1) of all patients, leukemia patients and hematopoietic stem cell transplantation (HSCT) patients were significantly higher in the death group compared with the non-death group (all P<0.05). ROC curve analysis revealed that the D_1, D_2, D_3 scores, and ΔD_1 significantly predicted mortality ( P<0.001), with areas under the curve (AUCs) of 0.786, 0.866, 0.901, and 0.843, respectively. The sensitivity values were 74.36%, 57.89%, 62.85%, and 86.84%, while specificity values were 70%, 100%, 100%, and 67.65%, respectively. In the HSCT group, the D_-1, D_1, D_2, D_ 3, scores and ΔD_1 were predictive of HCU mortality, with AUCs of 0.833, 0.794, 0.871, 0.846, and 0.795, respectively. Sensitivity values for these scores were 100%, 85.71%, 71.43%, 57.14%, and 57.14%, while specificity values were 73.33%, 70.59%, 91.33%, 100%, and 100%, respectively. In the leukemia group, the D_1, D_2, D_3 scores, and ΔD_1 were predictive of HCU mortality, with AUCs of 0.760, 0.829, 0.846, and 0.756, respectively. Sensitivity values were 71.43%, 78.57%, 53.85%, and 71.43%, while specificity values were 76.19%, 78.95%, 100%, and 63.16%, respectively. For all patients, the D_3 score exhibited the highest specificity, while the ΔD_1 demonstrated the highest sensitivity. For patients in both the HSCT and leukemia groups, the sensitivity and specificity values of the D_1 and D_3 scores exceeded those of the ΔD_1. Conclusion:For patients with hematologic critical illness, including leukemia and those undergoing HSCT hospitalized in the HCU, D_1, D_2, D_ 3 scores and ΔD_1 are significantly associated with HCU mortality.
8.Spatiotemporal distribution characteristics analysis of schistosomiasis in Wuhan City, 2013-2022
LI Yang ; WANG Hao ; LIU Cong ; ZHANG Jiajing ; WANG Shuai ; XIONG Yuelin ; LUO Huatang
China Tropical Medicine 2024;24(2):200-
Objective To analyze and visualize the epidemic changes of schistosomiasis in Wuhan from 2013 to 2022 based on a geographical information system (GIS), providing references for further schistosomiasis control activities. Methods According to the historical data of the annual reports of schistosomiasis screening and street-level vector map of Wuhan City from 2013 to 2022, a spatial database of epidemic information at the street level was established. The Joinpoint regression model was utilized to analyze the trend of phased changes in blood positivity rate for schistosomiasis. ArcMap 10.8 was employed for the spatial visualization of the positive rate of serological tests for schistosomiasis among the screened population in the endemic areas of Wuhan over the past decade, as well as conducting hot spot analysis (Getis-Ord Gi*) to explore the spatial clustering relationship and spatiotemporal trends. Heatmaps were generated to reflect the changes in the positive rate of blood tests for schistosomiasis over a decade in various streets, and the areas were classified by the ward’s method of hierarchical clustering using the sum of squared deviations. Results Over the past decade, the overall annual positive rate of schistosomiasis screening in Wuhan declined from 2.23% in 2013 to 0.47% in 2022, showing a general downward trend. The Joinpoint regression model analysis of the blood positive rate indicated the presence of one connection point in 2015; from 2013 to 2015, the annual percent change (APC) of the positive rate was 2.17%, showing an upward trend (P>0.05); from 2015 to 2022, the APC was -23.34%, indicating a downward trend (P<0.05). The map of positive street-level schistosomiasis screening rates for 2013-2022 shows that the positive rate count on the streets of Caidian District and Hannan District in southwestern Wuhan and Huashan Street on the east side, had a significant decrease over the ten years, while the rate in the streets under the jurisdiction of Dongxihu District in the west showed an increase. The hot spot analysis graph revealed that hot spots of the positive rate in Wuhan shifted from the southwest to the west beginning in 2018. The heatmap indicated the largest disparity in trend changes, with the most noteworthy decline in streets under Caidian District and an increasing trend in the streets under Dongxihu District. Conclusions The overall epidemic situation of schistosomiasis in Wuhan is on a downtrend, although the positive rate of blood tests has increased in some areas. This has been attributed to a reduction in the total number of people participating in the blood tests and the slow decrease of antibodies in certain patients who were repeatedly sampled for testing. It is important to further strengthen the construction of monitoring capabilities, improve the sensitivity of monitoring systems, identify potential risks promptly, and handle them properly.
9.Analysis of viral infections in adult acute respiratory infection cases in Shanghai, 2023
Huanru WANG ; Jiabin MOU ; Qi QIU ; Jiajing LIU ; Fang YUAN ; Meihua LIU ; Xiaode TANG ; Jingyi ZHANG ; Jian CHEN ; Min CHEN ; Huanyu WU ; Zheng TENG
Chinese Journal of Experimental and Clinical Virology 2024;38(4):439-445
Objective:To elucidate the etiological and epidemiological characteristics and epidemiological patterns of viral acute respiratory infections (ARI) in Shanghai during 2023, with the aim of providing robust laboratory evidence for effective prevention and control strategies against related respiratory diseases and facilitating risk assessment.Methods:Respiratory pathogens were detected in the clinical surveillance specimens submitted by sentinel hospitals through multiplex PCR, as part of the multi-pathogen surveillance of acute respiratory infections in Shanghai during 2023. The obtained detection result were statistically analyzed in conjunction with sample information.Results:The positive detection rate of viral pathogens in 2023 was 21.17% (984/4 648), with rates of 33.53% (504/1 503) observed in ILI cases and 15.62% (480/3 145) in SARI cases. Influenza A virus (FluA) was the predominant virus detected, accounting for 13.7% (637/4 648). Other viruses identified in the surveillance samples included influenza B virus (Flu B), human rhinovirus/enterovirus (HRV/HEV), respiratory syncytial virus (RSV), human metapneumovirus (HMPV), parainfluenza virus (PIV), adenovirus (ADV) and human bocavirus (HBoV). Regarding temporal distribution, HRV/HEV and RSV exhibited the highest detection rates during the second quarter at 2.27% each (28/1 236). PIV had its peak during the third quarter at a rate of 2.49% (35/1 405), and HMPV showed prevalence mainly during the third and fourth quarters, with detection rates of 2.63% (37/1 405) and 2.35% (32/1 360), respectively.Conclusions:In acute respiratory infection surveillance cases in Shanghai in 2023, Flu A emerged as the predominant respiratory pathogen. The detection rate of HMPV ranked second only to Flu A, while other respiratory viruses such as HRV/HEV, RSV, and PIV were detected during different seasons and co-circulated. The prevalence of various respiratory viruses varied among different infected populations and over times.
10.Molecular characteristics of HA1 and NA genes of influenza A (H3N2) virus in Yancheng city from 2022 to 2024
Chunxiang LI ; Xiongying SUN ; Min YANG ; Peng SHEN ; Jiajing YUAN ; Min ZHANG ; Chen CHEN ; Changcheng LI ; Guoqing CHEN
Chinese Journal of Experimental and Clinical Virology 2024;38(4):446-453
Objective:To analyze the molecular evolutional characteristics of the hemagglutinin and neuraminidase genes of influenza A (H3N2) viruses isolated in Yancheng from 2022 to 2024.Methods:The throat swab specimens of influenza-like illness ( ILI) from sentinel surveillance hospital and outbreak sites were detected using the method of real time Rt-qPCR. The influenza A(H3N2) viruses were isolated using MDCK cells culture method from April 2022 to Marh 2024. The strains isolated from 2022 to 2024 were selected randomly and their sequences of the HA1 and NA genes were amplified through one step RT-PCR method and the PCR products were sequenced.The nucleotide and amino acid site variations and evolutionary characteristics of the genes were analyzed using relevant bioinformatics software. The mutations of genes and nucleic acid locus were analyzed and the evolutional trees were generated using bioinformatics software.Results:A total of 5 020 samples were collected between April 2022 and March 2024, the positive detection rate of influenza virus nucleic acid was 18.59%(933/5 020).The winter and spring influenza peaks were obvious in the two monitoring seasons from April 2022 to March 2024. Among them, the summer influenza peak was obvious in the monitoring season from April 2022 to March 2023, and the H3N2 subtype influenza virus was the dominant epidemic strain in the two monitoring seasons. Genetic evolution tree displayed: the clustering relationships of the respective branches of HA1 and NA genes of 32 strains isolated in Yancheng were basically the same.The HA1 and NA genes of 24 strains isolated from 2023-2024 in Yancheng and the 2022-2024 Northern Hemisphere vaccine strain A/Darwin/9/2021 (H3N2) were located in the 3C.2a1b2a.2a.3a.1 evolutionary lineage, while the 8 strains isolated in the 2022 in Yancheng and the 2021-2022 Northern Hemisphere vaccine strain A/Cambodia/e0826360/2020 (H3N2) were located in the 3C.2a1b.2a.1a evolutionary lineage.The 6 strains (A/JSTH/11735/2023, A/JSTH/11788/2023, A/JSTH/11974/2023, A/JSYD/353/2023, A/JSYD/354/2023, A/JSTH/138/2023) all exhibited variations in the F79L, N122D, P239S, and K276E amino acid sites, which were present in both sporadic and outbreak strains. Because the strains of the antigen epitopes, receptor binding sites and glycosylation sites in the HA1 genes had a certain degree of variations in Yancheng in the 2022-2024 year, the immunogenicity matching between the 24 strains isolated in the 2023-2024 and the Northern Hemisphere vaccine strain A/Darwin/9/2021 was good, while the immunogenicity matching between the 8 strains isolated in the 2022 and the Northern Hemisphere vaccine strain A/Cambodia/e0826360/2022 was good; 32 strains isolated from 2022 to 2024 had no mutations in catalytic residues and drug resistant sites of NA genes.Conclusion:These result indicated that the HA1 and NA genes of influenza A/H3N2 viruses circulated in Yancheng city from 2022 to 2024 are changed gradually.The accumulation of these mutations would result in antigenic drift of influenza A(H3N2) viruses and increase the mismatching of the recommended vaccine strain.Compared with the vaccine strain A/Darwin/9/2021(H3N2), the strains isolated in the 2022 had substantially result in antigenic drift on the whole.The influenza A(H3N2) viruses surveillance should be strengthened to find the new mutant of virus in time.

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