1.Fangji Fulingtang Attenuates Myocardial Fibrosis by Regulating Mitochondrial Function Through AMPK/PGC-1α/MFN2-PKM2 Signaling Pathway
Xuqin DU ; Yixuan LI ; Yuxia JIN ; Hongding LI ; Ruogu YANG ; Lipeng SHI ; Yi REN
Chinese Journal of Experimental Traditional Medical Formulae 2026;32(20):1-10
ObjectiveTo investigate the effects and mechanisms of Fangji Fulingtang (FFD) on mitochondrial function in the mouse model of myocardial fibrosis (MF). MethodsSixty SPF-grade male C57BL/6J mice were randomly allocated into six groups (n=10 per group): control, model, low-dose, medium-dose, and high-dose (3.315, 6.63, and 13.26 g·kg-1, respectively) FFD, and captopril (20 mg·kg-1). MF was induced by subcutaneous injection of isoproterenol (10 mg·kg-1·d-1) in other groups except the control group for 14 consecutive days, with simultaneous gavage of corresponding drugs. Left ventricular ejection fraction (LVEF) and left ventricular fractional shortening (LVFS) were measured by echocardiography. Serum levels of creatine kinase-MB (CK-MB), cardiac troponin I (cTnI), N-terminal pro-brain natriuretic peptide (NT-pro BNP), tumor necrosis factor-α (TNF-α), interleukin-1β (IL-1β), and interleukin-6 (IL-6) were determined by enzyme-linked immunosorbent assay (ELISA). Malondialdehyde (MDA), superoxide dismutase (SOD), and glutathione (GSH) levels were measured by biochemical assays. Reactive oxygen species (ROS) were detected by dihydroethidium (DHE) fluorescence staining. Hematoxylin-eosin (HE), Masson's trichrome, and wheat germ agglutinin (WGA) staining were performed to evaluate myocardial structure and fibrosis. Mitochondrial ultrastructure and function were assessed by transmission electron microscopy, adenosine triphosphate (ATP) colorimetric assay, and JC-1 fluorescence staining. The protein levels of phosphorylated adenosine monophosphate-activated protein kinase α subunit (p-AMPKα), AMPKα, peroxisome proliferator-activated receptor gamma coactivator-1α (PGC-1α), mitofusin 2 (MFN2), pyruvate kinase M2 isoform (PKM2), lactate dehydrogenase A (LDHA), and hypoxia-inducible factor 1 alpha (HIF-1α) were analyzed by Western blot. ResultsCompared with the control group, the model group exhibited decreased LVEF and LVFS, increased heart weight index and heart weight-to-tibia length ratio (P<0.01), elevated levels of myocardial injury markers (CK-MB, cTnI, and NT-pro BNP), inflammatory cytokines (TNF-α, IL-1β, and IL-6), and MDA, along with reduced SOD and GSH levels (P<0.01). Enhanced interstitial collagen deposition and cardiomyocyte hypertrophy were observed in the model group (P<0.01). Transmission electron microscopy and JC-1 staining revealed mitochondrial swelling, crista disruption, decreased ATP content, and reduced red/green fluorescence ratio in the model group (P<0.01). Western blot analysis demonstrated downregulation of p-AMPKα, PGC-1α, and MFN2 and upregulation of PKM2, LDHA, and HIF-1α in the model group (P<0.01). Compared with the model group, treatment with FFD or captopril improved LVEF and LVFS, reduced heart weight index and heart weight-to-tibia length ratio (P<0.05, P<0.01), lowered the serum levels of CK-MB, cTnI, NT-pro BNP, TNF-α, IL-1β, IL-6, and MDA, increased the SOD and GSH levels (P<0.05, P<0.01), attenuated the myocardial fibrosis and cardiomyocyte hypertrophy (P<0.01), and restored the mitochondrial ultrastructure. The medium and high-dose FFD groups as well as the captopril group showed increased ATP production and red/green fluorescence ratio (P<0.05, P<0.01). Furthermore, FFD upregulated the expression of p-AMPKα and PGC-1α while downregulating the expression of LDHA and HIF-1α (P<0.05, P<0.01). ConclusionFFD activates the AMPK/PGC-1α/MFN2 signaling pathway and inhibits the PKM2/LDHA/HIF-1α axis to restore mitochondrial function and energy metabolic homeostasis, thereby attenuating isoproterenol-induced myocardial fibrosis.
2.Treatment of Children Adenoid Hypertrophy Using the "Opening the Orifices and Regulating Qi Method"
Zhihao DIAO ; Shuai SONG ; Jingzhi ZHANG ; Yiyang SUN ; Dongqing DU ; Longtao ZHANG ; Yufei HU ; Yuxia MA
Journal of Traditional Chinese Medicine 2026;67(18):2011-2015
This paper summarizes the clinical experience in treating children adenoid hypertrophy using the "opening the orifices and regulating qi method". It is considered that the pathogenesis of adenoid hypertrophy in children is rooted in dysfunction of zangfu (脏腑) organs, with binding of phlegm and stasis as the branch. Obstruction of the cervical passes and rebellious, chaotic qi flow run through the entire course of the disease. The "opening the orifices and regulating qi method" is proposed, which emphasizes the regulation of the lung, spleen, liver, and stomach. By opening the cervical passes, regulating zangfu organs, and eliminating phlegm and stasis to harmonize the ascent and descent of qi, a comprehensive application of external traditional Chinese medicine (TCM) therapies, such as acupuncture, umbilical moxibustion with medicinals, collateral bloodletting, and sole therapy, is utilized. Addressing both root and branch causes, this approach provides new perspectives for treating children adenoid hypertrophy using external TCM therapies.
3.Fangji Fulingtang Attenuates Myocardial Fibrosis by Regulating Mitochondrial Function Through AMPK/PGC-1α/MFN2-PKM2 Signaling Pathway
Xuqin DU ; Yixuan LI ; Yuxia JIN ; Hongding LI ; Ruogu YANG ; Lipeng SHI ; Yi REN
Chinese Journal of Experimental Traditional Medical Formulae 2026;32(20):1-10
ObjectiveTo investigate the effects and mechanisms of Fangji Fulingtang (FFD) on mitochondrial function in the mouse model of myocardial fibrosis (MF). MethodsSixty SPF-grade male C57BL/6J mice were randomly allocated into six groups (n=10 per group): control, model, low-dose, medium-dose, and high-dose (3.315, 6.63, and 13.26 g·kg-1, respectively) FFD, and captopril (20 mg·kg-1). MF was induced by subcutaneous injection of isoproterenol (10 mg·kg-1·d-1) in other groups except the control group for 14 consecutive days, with simultaneous gavage of corresponding drugs. Left ventricular ejection fraction (LVEF) and left ventricular fractional shortening (LVFS) were measured by echocardiography. Serum levels of creatine kinase-MB (CK-MB), cardiac troponin I (cTnI), N-terminal pro-brain natriuretic peptide (NT-pro BNP), tumor necrosis factor-α (TNF-α), interleukin-1β (IL-1β), and interleukin-6 (IL-6) were determined by enzyme-linked immunosorbent assay (ELISA). Malondialdehyde (MDA), superoxide dismutase (SOD), and glutathione (GSH) levels were measured by biochemical assays. Reactive oxygen species (ROS) were detected by dihydroethidium (DHE) fluorescence staining. Hematoxylin-eosin (HE), Masson's trichrome, and wheat germ agglutinin (WGA) staining were performed to evaluate myocardial structure and fibrosis. Mitochondrial ultrastructure and function were assessed by transmission electron microscopy, adenosine triphosphate (ATP) colorimetric assay, and JC-1 fluorescence staining. The protein levels of phosphorylated adenosine monophosphate-activated protein kinase α subunit (p-AMPKα), AMPKα, peroxisome proliferator-activated receptor gamma coactivator-1α (PGC-1α), mitofusin 2 (MFN2), pyruvate kinase M2 isoform (PKM2), lactate dehydrogenase A (LDHA), and hypoxia-inducible factor 1 alpha (HIF-1α) were analyzed by Western blot. ResultsCompared with the control group, the model group exhibited decreased LVEF and LVFS, increased heart weight index and heart weight-to-tibia length ratio (P<0.01), elevated levels of myocardial injury markers (CK-MB, cTnI, and NT-pro BNP), inflammatory cytokines (TNF-α, IL-1β, and IL-6), and MDA, along with reduced SOD and GSH levels (P<0.01). Enhanced interstitial collagen deposition and cardiomyocyte hypertrophy were observed in the model group (P<0.01). Transmission electron microscopy and JC-1 staining revealed mitochondrial swelling, crista disruption, decreased ATP content, and reduced red/green fluorescence ratio in the model group (P<0.01). Western blot analysis demonstrated downregulation of p-AMPKα, PGC-1α, and MFN2 and upregulation of PKM2, LDHA, and HIF-1α in the model group (P<0.01). Compared with the model group, treatment with FFD or captopril improved LVEF and LVFS, reduced heart weight index and heart weight-to-tibia length ratio (P<0.05, P<0.01), lowered the serum levels of CK-MB, cTnI, NT-pro BNP, TNF-α, IL-1β, IL-6, and MDA, increased the SOD and GSH levels (P<0.05, P<0.01), attenuated the myocardial fibrosis and cardiomyocyte hypertrophy (P<0.01), and restored the mitochondrial ultrastructure. The medium and high-dose FFD groups as well as the captopril group showed increased ATP production and red/green fluorescence ratio (P<0.05, P<0.01). Furthermore, FFD upregulated the expression of p-AMPKα and PGC-1α while downregulating the expression of LDHA and HIF-1α (P<0.05, P<0.01). ConclusionFFD activates the AMPK/PGC-1α/MFN2 signaling pathway and inhibits the PKM2/LDHA/HIF-1α axis to restore mitochondrial function and energy metabolic homeostasis, thereby attenuating isoproterenol-induced myocardial fibrosis.
4.Antimicrobial resistance surveillance in the bacterial strains isolated from pediatric intensive care units in China:results from 2020 to 2022
Jing LIU ; Huiyuan YAN ; Gangfeng YAN ; Guoping LU ; Pan FU ; Chuanqing WANG ; Danqun JIN ; Wenjia TONG ; Chenyu ZHANG ; Jianli CHEN ; Yi LIN ; Jia LEI ; Yibing CHENG ; Qunqun ZHANG ; Kaijie GAO ; Yuanyuan CHEN ; Shufang XIAO ; Juan HE ; Li JIANG ; Huimin XU ; Yuxia LI ; Hanghai DING ; Hehe CHEN ; Yao ZHENG ; Qunying CHEN ; Ying WANG ; Hong REN ; Chenmei ZHANG ; Zhenjie CHEN ; Mingming ZHOU ; Yucai ZHANG ; Yiping ZHOU ; Zhenjiang BAI ; Saihu HUANG ; Lili HUANG ; Weiguo YANG ; Weike MA ; Qing MENG ; Pengwei ZHU ; Yong LI ; Yan XU ; Yi WANG ; Yanqiang DU ; Huijun CAI ; Bizhen ZHU ; Huixuan SHI ; Shaoxian HONG ; Yukun HUANG ; Meilian HUANG
Chinese Journal of Infection and Chemotherapy 2025;25(3):303-311
Objective This study aimed to investigate the antimicrobial resistance profiles of bacterial strains isolated from pediatric intensive care units(PICU)in China for better antimicrobial therapy.Methods Clinical isolates were collected from 17 institutions,including tertiary care children's hospitals and pediatric department of tertiary general hospitals in China from January 1,2020 to December 31,2022.Antimicrobial susceptibility testing was carried out according to a unified protocol using Kirby-Bauer method or automated systems.Results were interpreted according to the breakpoints released by the Clinical and Laboratory Standards Institute(CLSI)in 2020.Results A total of 10 688 isolates were collected,including gram-positive organisms(39.2%)and gram-negative organisms(60.8%).The top three organisms were S.aureus(13.6%,1 453/10 688),A.baumannii(10.0%,1 067/10 688),and coagulase-negative Staphylococcus(9.9%,1 058/10 688).Multi-drug resistant organisms(MDROs)were very common in children.The prevalence of methicillin-resistant Staphylococcus aureus(MRSA),carbapenem-resistant Enterobacterales(CRE),carbapenem-resistant E.coli,carbapenem-resistant K.pneumoniae(CRKP),carbapenem-resistant A.baumannii(CRAB),and carbapenem-resistant P.aeruginosa(CRPA)was 41.1%,19.4%,8.8%,30.9%,67.4%,and 28.8%,respectively.Overall,more than 50%of Enterobacteriales isolates were resistant to cephalosporins,while nearly 25%of Enterobacteriales isolates were resistant to carbapenems.MDROs were highly resistant to commonly used antibiotics.More than 80%of CRE and CRAB strains were resistant to all beta-lactam antibiotics.CRE and CRAB showed low resistance rates to tigecycline and polymyxin.CRPA showed lower resistance rates to piperacillin,beta-lactamase inhibitor combinations than the resistance rates to third and fourth generation cephalosporins.All of the Staphylococcus and Enterococcus isolates were susceptible to vancomycin and tigecycline.None of PRSP strains isolated from meningitis and nonmeningitis samples were resistant to rifampicin,vancomycin,or linezolid.The prevalence of β-lactamase-negative ampicillin-resistant(BLNAR)strains was 43.3%in Haemophilus influenzae.Conclusions MDROs were prevalent in PICU.It is necessary to establish an effective multidisciplinary team(MDT)to control the antimicrobial resistance.
5.Literature Quality Evaluation of Randomized Controlled Trials on Acupuncture Treatment for Diminished Ovarian Reserve
Ningning MENG ; Na ZHANG ; Yiyang SUN ; Dongqing DU ; Yuxia MA
Chinese Journal of Information on Traditional Chinese Medicine 2025;32(5):39-46
Objective To evaluate the methodological quality and literature report quality of randomized controlled trials(RCTs)on acupuncture treatment for diminished ovarian reserve published both domestically and internationally;To provide reference for future related clinical research.Methods RCTs on acupuncture treatment for diminished ovarian reserve were retrieved from Cochrane Library,PubMed,Embase,Web of Science,CBM,CNKI,Wanfang Data and VIP from the establishment of the databases to 16th,March 2024.Literature was screened according to the inclusion criteria,and basic research features were extracted from literature.Cochrane Collaborative Network randomized controlled trial bias risk assessment tool RoB2 was used for methodological quality evaluation,and CONSORT statement and STRICTA checklist were used for literature report quality evaluation.Results Totally 19 RCTs were included.The evaluation results of RoB2 showed that 18 RCTs(94.74%)had a certain risk of bias,and 1 RCT(5.26%)had a high risk of bias.In the evaluation of the CONSORT statement,there were a total of 24 items with a research report rate of less than 50%,accounting for 64.86%of all items,and 14 items with a report rate of less than 10%,accounting for 37.84%of all items;in the evaluation of the STRICTA list,there were a total of 3 items with a research report rate of less than 50%,accounting for 17.65%of all items,and 2 items with a report rate of less than 10%,accounting for 11.76%of all items.Conclusion Currently,the overall number of RCTs for acupuncture treatment of diminished ovarian reserve is relatively small,the methodological quality of the study is generally low,and the risk of bias is high.The literature reporting rate of the CONSORT statement items is low.Researchers should further strengthen clinical trial design and methodological training,improve the level of clinical research,and strictly follow the CONSORT statement and STRICTA checklist for standardized reporting.
6.Literature Quality Evaluation of Randomized Controlled Trials on Acupuncture Treatment for Diminished Ovarian Reserve
Ningning MENG ; Na ZHANG ; Yiyang SUN ; Dongqing DU ; Yuxia MA
Chinese Journal of Information on Traditional Chinese Medicine 2025;32(5):39-46
Objective To evaluate the methodological quality and literature report quality of randomized controlled trials(RCTs)on acupuncture treatment for diminished ovarian reserve published both domestically and internationally;To provide reference for future related clinical research.Methods RCTs on acupuncture treatment for diminished ovarian reserve were retrieved from Cochrane Library,PubMed,Embase,Web of Science,CBM,CNKI,Wanfang Data and VIP from the establishment of the databases to 16th,March 2024.Literature was screened according to the inclusion criteria,and basic research features were extracted from literature.Cochrane Collaborative Network randomized controlled trial bias risk assessment tool RoB2 was used for methodological quality evaluation,and CONSORT statement and STRICTA checklist were used for literature report quality evaluation.Results Totally 19 RCTs were included.The evaluation results of RoB2 showed that 18 RCTs(94.74%)had a certain risk of bias,and 1 RCT(5.26%)had a high risk of bias.In the evaluation of the CONSORT statement,there were a total of 24 items with a research report rate of less than 50%,accounting for 64.86%of all items,and 14 items with a report rate of less than 10%,accounting for 37.84%of all items;in the evaluation of the STRICTA list,there were a total of 3 items with a research report rate of less than 50%,accounting for 17.65%of all items,and 2 items with a report rate of less than 10%,accounting for 11.76%of all items.Conclusion Currently,the overall number of RCTs for acupuncture treatment of diminished ovarian reserve is relatively small,the methodological quality of the study is generally low,and the risk of bias is high.The literature reporting rate of the CONSORT statement items is low.Researchers should further strengthen clinical trial design and methodological training,improve the level of clinical research,and strictly follow the CONSORT statement and STRICTA checklist for standardized reporting.
7.Antimicrobial resistance surveillance in the bacterial strains isolated from pediatric intensive care units in China:results from 2020 to 2022
Jing LIU ; Huiyuan YAN ; Gangfeng YAN ; Guoping LU ; Pan FU ; Chuanqing WANG ; Danqun JIN ; Wenjia TONG ; Chenyu ZHANG ; Jianli CHEN ; Yi LIN ; Jia LEI ; Yibing CHENG ; Qunqun ZHANG ; Kaijie GAO ; Yuanyuan CHEN ; Shufang XIAO ; Juan HE ; Li JIANG ; Huimin XU ; Yuxia LI ; Hanghai DING ; Hehe CHEN ; Yao ZHENG ; Qunying CHEN ; Ying WANG ; Hong REN ; Chenmei ZHANG ; Zhenjie CHEN ; Mingming ZHOU ; Yucai ZHANG ; Yiping ZHOU ; Zhenjiang BAI ; Saihu HUANG ; Lili HUANG ; Weiguo YANG ; Weike MA ; Qing MENG ; Pengwei ZHU ; Yong LI ; Yan XU ; Yi WANG ; Yanqiang DU ; Huijun CAI ; Bizhen ZHU ; Huixuan SHI ; Shaoxian HONG ; Yukun HUANG ; Meilian HUANG
Chinese Journal of Infection and Chemotherapy 2025;25(3):303-311
Objective This study aimed to investigate the antimicrobial resistance profiles of bacterial strains isolated from pediatric intensive care units(PICU)in China for better antimicrobial therapy.Methods Clinical isolates were collected from 17 institutions,including tertiary care children's hospitals and pediatric department of tertiary general hospitals in China from January 1,2020 to December 31,2022.Antimicrobial susceptibility testing was carried out according to a unified protocol using Kirby-Bauer method or automated systems.Results were interpreted according to the breakpoints released by the Clinical and Laboratory Standards Institute(CLSI)in 2020.Results A total of 10 688 isolates were collected,including gram-positive organisms(39.2%)and gram-negative organisms(60.8%).The top three organisms were S.aureus(13.6%,1 453/10 688),A.baumannii(10.0%,1 067/10 688),and coagulase-negative Staphylococcus(9.9%,1 058/10 688).Multi-drug resistant organisms(MDROs)were very common in children.The prevalence of methicillin-resistant Staphylococcus aureus(MRSA),carbapenem-resistant Enterobacterales(CRE),carbapenem-resistant E.coli,carbapenem-resistant K.pneumoniae(CRKP),carbapenem-resistant A.baumannii(CRAB),and carbapenem-resistant P.aeruginosa(CRPA)was 41.1%,19.4%,8.8%,30.9%,67.4%,and 28.8%,respectively.Overall,more than 50%of Enterobacteriales isolates were resistant to cephalosporins,while nearly 25%of Enterobacteriales isolates were resistant to carbapenems.MDROs were highly resistant to commonly used antibiotics.More than 80%of CRE and CRAB strains were resistant to all beta-lactam antibiotics.CRE and CRAB showed low resistance rates to tigecycline and polymyxin.CRPA showed lower resistance rates to piperacillin,beta-lactamase inhibitor combinations than the resistance rates to third and fourth generation cephalosporins.All of the Staphylococcus and Enterococcus isolates were susceptible to vancomycin and tigecycline.None of PRSP strains isolated from meningitis and nonmeningitis samples were resistant to rifampicin,vancomycin,or linezolid.The prevalence of β-lactamase-negative ampicillin-resistant(BLNAR)strains was 43.3%in Haemophilus influenzae.Conclusions MDROs were prevalent in PICU.It is necessary to establish an effective multidisciplinary team(MDT)to control the antimicrobial resistance.
8.Epidemic characteristics of measles and efforts to control measles infections in Zhejiang Province, China
Rui YAN ; Mengya YANG ; Hanqing HE ; Yan FENG ; Yang ZHOU ; Xuewen TANG ; Xuan DENG ; Yao ZHU ; Yuxia DU ; Can CHEN ; Cao KEXIN ; Shigui YANG ;
Epidemiology and Health 2024;46(1):e2024075-
OBJECTIVES:
Several countries have successfully eliminated measles, and China is making significant strides toward achieving this goal. This study focused on investigating the patterns of measles infections in Zhejiang Province, China, as well as control measures. The objective was to provide valuable insights that could contribute to the development of nationwide elimination strategies.
METHODS:
We analyzed measles surveillance data from 2005 to 2022 in Zhejiang Province. We utilized a joinpoint regression model to examine trends in measles. Additionally, we employed SaTScan version 9.5 to identify spatial-temporal clusters. Finally, we used an age-period-cohort model to assess the effects of age, period, and cohort.
RESULTS:
The age-standardized incidence rate (ASIR) of measles infection in Zhejiang Province from 2005 to 2022 was 5.24 per 100,000, showing a consistent and significant downward trend with an annual percentage change of -24.93% (p<0.05). After 2020, the ASIR for measles infection fell to below 0.1 per 100,000. The majority of measles cases occurred in individuals either without an immunization history or with an unknown immunization status, representing 41.06% and 41.40% of the cases from 2010 to 2022, respectively. According to data from the National Measles Surveillance System, the annual rate of discarded measles cases from 2009 to 2014, and the annual rate of discarded measles and rubella cases from 2015 to 2022, were both above 2 per 100,000, indicating the high sensitivity of the measles surveillance system.
CONCLUSIONS
The significant reduction in measles incidence from 2005 to 2022 demonstrates substantial progress in Zhejiang Province towards the elimination of measles.
9.Epidemic characteristics of measles and efforts to control measles infections in Zhejiang Province, China
Rui YAN ; Mengya YANG ; Hanqing HE ; Yan FENG ; Yang ZHOU ; Xuewen TANG ; Xuan DENG ; Yao ZHU ; Yuxia DU ; Can CHEN ; Cao KEXIN ; Shigui YANG ;
Epidemiology and Health 2024;46(1):e2024075-
OBJECTIVES:
Several countries have successfully eliminated measles, and China is making significant strides toward achieving this goal. This study focused on investigating the patterns of measles infections in Zhejiang Province, China, as well as control measures. The objective was to provide valuable insights that could contribute to the development of nationwide elimination strategies.
METHODS:
We analyzed measles surveillance data from 2005 to 2022 in Zhejiang Province. We utilized a joinpoint regression model to examine trends in measles. Additionally, we employed SaTScan version 9.5 to identify spatial-temporal clusters. Finally, we used an age-period-cohort model to assess the effects of age, period, and cohort.
RESULTS:
The age-standardized incidence rate (ASIR) of measles infection in Zhejiang Province from 2005 to 2022 was 5.24 per 100,000, showing a consistent and significant downward trend with an annual percentage change of -24.93% (p<0.05). After 2020, the ASIR for measles infection fell to below 0.1 per 100,000. The majority of measles cases occurred in individuals either without an immunization history or with an unknown immunization status, representing 41.06% and 41.40% of the cases from 2010 to 2022, respectively. According to data from the National Measles Surveillance System, the annual rate of discarded measles cases from 2009 to 2014, and the annual rate of discarded measles and rubella cases from 2015 to 2022, were both above 2 per 100,000, indicating the high sensitivity of the measles surveillance system.
CONCLUSIONS
The significant reduction in measles incidence from 2005 to 2022 demonstrates substantial progress in Zhejiang Province towards the elimination of measles.
10.Epidemic characteristics of measles and efforts to control measles infections in Zhejiang Province, China
Rui YAN ; Mengya YANG ; Hanqing HE ; Yan FENG ; Yang ZHOU ; Xuewen TANG ; Xuan DENG ; Yao ZHU ; Yuxia DU ; Can CHEN ; Cao KEXIN ; Shigui YANG ;
Epidemiology and Health 2024;46(1):e2024075-
OBJECTIVES:
Several countries have successfully eliminated measles, and China is making significant strides toward achieving this goal. This study focused on investigating the patterns of measles infections in Zhejiang Province, China, as well as control measures. The objective was to provide valuable insights that could contribute to the development of nationwide elimination strategies.
METHODS:
We analyzed measles surveillance data from 2005 to 2022 in Zhejiang Province. We utilized a joinpoint regression model to examine trends in measles. Additionally, we employed SaTScan version 9.5 to identify spatial-temporal clusters. Finally, we used an age-period-cohort model to assess the effects of age, period, and cohort.
RESULTS:
The age-standardized incidence rate (ASIR) of measles infection in Zhejiang Province from 2005 to 2022 was 5.24 per 100,000, showing a consistent and significant downward trend with an annual percentage change of -24.93% (p<0.05). After 2020, the ASIR for measles infection fell to below 0.1 per 100,000. The majority of measles cases occurred in individuals either without an immunization history or with an unknown immunization status, representing 41.06% and 41.40% of the cases from 2010 to 2022, respectively. According to data from the National Measles Surveillance System, the annual rate of discarded measles cases from 2009 to 2014, and the annual rate of discarded measles and rubella cases from 2015 to 2022, were both above 2 per 100,000, indicating the high sensitivity of the measles surveillance system.
CONCLUSIONS
The significant reduction in measles incidence from 2005 to 2022 demonstrates substantial progress in Zhejiang Province towards the elimination of measles.

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