1.Analysis of the etiological features and clinical characteristics of herpes zoster cases under 20 years old in Beijing City from 2017 to 2021
Jingbin PAN ; Tao ZHOU ; Luodan SUO ; Liyong YUAN ; Yaru QUAN ; Haihong WANG ; Xinghui PENG ; Tao WANG ; Zonglong ZHU ; Yanfei WANG ; Dan ZHAO ; Li LU
Chinese Journal of Preventive Medicine 2024;58(3):285-291
Objective:To analyze the etiological features and clinical characteristics of herpes zoster cases under 20 years old in Beijing City from 2017 to 2021.Methods:Herpes zoster cases were collected from a surveillance system in Beijing City from December 2017 to April 2021. The cases included individuals under 20 years old from seven sentinel hospitals located in two districts (Miyun District and Changping District). The basic information, the rash date of rash onset and the location and number of lesions were investigated at the first visit to the hospital, and the lesion swab samples were collected for laboratory testing. A telephone follow-up was conducted 21 days after the onset of the rash to investigate the degree of pain, duration of the rash and duration of pain. The individuals who still experienced neuralgia were further investigated for their pain condition at 90 days after the onset of the rash, to discover cases with postherpetic neuralgia. DNA was extracted from the rash fluid, and the ORF62 gene region was amplified and sequenced to obtain the viral sequence. The wild-type strain or chickenpox vaccine strain was identified by using sequence alignment, and the clinical characteristics of cases with different varicella vaccinations were compared.Results:A total of 78 herpes zoster cases under 20 years old were investigated during 2017-2021 in Beijing City, and 61 cases completed the follow-up survey. The age range of 61 cases was 1.83 to 20.54 years with a median age of 17.50 years. There were 36 males (59.02%) and 25 females (40.98%). Among them, there were 29 cases with the chickenpox vaccine immunization history (18 cases with one dose, 5 cases with two doses and 6 cases with unknown doses), 13 cases with no vaccination history and 19 cases with unknown vaccination history. Among the 78 cases, the herpetic fluid samples of 64 cases were positive for VZV, including 62 cases identified as wild-type strains and two cases as vaccine strains. The two vaccine strain cases were both 2-year-old girls who had received one dose of varicella vaccine and developed herpes zoster 3 months and 13 months after vaccination. Among the 29 cases with chickenpox vaccine immunization history, the majority had 10 to 49 lesions, accounting for 58.62% (17 cases). The trunk was the most common site of lesions, accounting for 44.83% (13 cases). About 51.72% (15 cases) reported "no or mild" pain intensity. The median ( Q1, Q3) scores for the worst pain, duration of pain and the time to crusting of lesions in the herpes zoster cases were 3 (1.5, 5) points, 10 (1.5, 12.5) days and 10 (6.5, 13) days, respectively. There was no statistically significant difference in the constituent ratio of the location of lesions, number of lesions and pain degree among the cases with vaccination history, without vaccination history and with unknown vaccination history ( P>0.05). There was also no statistically significant difference in the distribution of pain score, duration of lesions and duration of pain across the three groups ( P>0.05). Conclusion:Wild strains are the predominant pathogens in herpes zoster cases under 20 years old in Beijing City during 2017-2021. The varicella vaccination has no significant impact on the clinical manifestations of herpes zoster cases.
2.Scapular motion and shoulder function in patients suffering from rotator cuff tears with typeⅢscapular dyskinesis
Lei LI ; Feng GAO ; Yifeng FU ; Jingyi SUN ; Chen HE ; Yi QIAN ; Sen GUO ; Hao XU ; Yue HAO ; Jinglun YANG ; Xiaohan ZHANG ; Yawei GONG ; Yingqi ZHAO ; Zhuang LIU ; Jingbin ZHOU
Chinese Journal of Sports Medicine 2024;43(3):167-174
Objective To explore the differences in scapular motion and shoulder function between patients suffering from rotator cuff tears(RCT)with and without type Ⅲ scapular dyskinesis(SD).Meth-ods Between September 2021 and March 2023,sixteen patients suffering from rotator cuff tears with SD(SD group)and 17 counterparts without SD(non-SD group)were recruited from the Sports Hospital of the General Administration of Sport of China.Their scapular motion was assessed by measuring three parameters in the X-rays,including scapular spine line(LSS),scapular upward rotation angle(SU-RA),and coracoid upward shift distance(CUSD).Moreover,their shoulder range of motion in flexion,abduction and external rotation were recorded,and further evaluated using the Pain Visual Analog Scale(VAS)and American Shoulder and Elbow Surgeons Score(ASES).Results No significant differenc-es were found between the two groups in the average score of SURA,CUSD and LSS at 0°~30° shoul-der abduction,or in that of CUSD and LSS at 60°~90°shoulder abduction.However,the average SU-RA score of the SD group at 60°~90°shoulder abduction was significantly greater than the other group(P<0.05).The shoulder ranges of motion during active flexion,abduction and external rotation were significantly smaller in the SD group than in the non-SD group(P<0.05).Moreover,the average VAS score in the SD group was significantly higher than the non-SD group(P<0.05),while the average ASES score was significantly lower than the latter group(P<0.05).Conclusions RCT patients type III SD exhibits greater scapular upward rotation during shoulder abduction compared to those without SD.Moreover,the former patients suffer from more severe pain and have worse shoulder range of motion and functional performance than the latter.
3.Analysis of the etiological features and clinical characteristics of herpes zoster cases under 20 years old in Beijing City from 2017 to 2021
Jingbin PAN ; Tao ZHOU ; Luodan SUO ; Liyong YUAN ; Yaru QUAN ; Haihong WANG ; Xinghui PENG ; Tao WANG ; Zonglong ZHU ; Yanfei WANG ; Dan ZHAO ; Li LU
Chinese Journal of Preventive Medicine 2024;58(3):285-291
Objective:To analyze the etiological features and clinical characteristics of herpes zoster cases under 20 years old in Beijing City from 2017 to 2021.Methods:Herpes zoster cases were collected from a surveillance system in Beijing City from December 2017 to April 2021. The cases included individuals under 20 years old from seven sentinel hospitals located in two districts (Miyun District and Changping District). The basic information, the rash date of rash onset and the location and number of lesions were investigated at the first visit to the hospital, and the lesion swab samples were collected for laboratory testing. A telephone follow-up was conducted 21 days after the onset of the rash to investigate the degree of pain, duration of the rash and duration of pain. The individuals who still experienced neuralgia were further investigated for their pain condition at 90 days after the onset of the rash, to discover cases with postherpetic neuralgia. DNA was extracted from the rash fluid, and the ORF62 gene region was amplified and sequenced to obtain the viral sequence. The wild-type strain or chickenpox vaccine strain was identified by using sequence alignment, and the clinical characteristics of cases with different varicella vaccinations were compared.Results:A total of 78 herpes zoster cases under 20 years old were investigated during 2017-2021 in Beijing City, and 61 cases completed the follow-up survey. The age range of 61 cases was 1.83 to 20.54 years with a median age of 17.50 years. There were 36 males (59.02%) and 25 females (40.98%). Among them, there were 29 cases with the chickenpox vaccine immunization history (18 cases with one dose, 5 cases with two doses and 6 cases with unknown doses), 13 cases with no vaccination history and 19 cases with unknown vaccination history. Among the 78 cases, the herpetic fluid samples of 64 cases were positive for VZV, including 62 cases identified as wild-type strains and two cases as vaccine strains. The two vaccine strain cases were both 2-year-old girls who had received one dose of varicella vaccine and developed herpes zoster 3 months and 13 months after vaccination. Among the 29 cases with chickenpox vaccine immunization history, the majority had 10 to 49 lesions, accounting for 58.62% (17 cases). The trunk was the most common site of lesions, accounting for 44.83% (13 cases). About 51.72% (15 cases) reported "no or mild" pain intensity. The median ( Q1, Q3) scores for the worst pain, duration of pain and the time to crusting of lesions in the herpes zoster cases were 3 (1.5, 5) points, 10 (1.5, 12.5) days and 10 (6.5, 13) days, respectively. There was no statistically significant difference in the constituent ratio of the location of lesions, number of lesions and pain degree among the cases with vaccination history, without vaccination history and with unknown vaccination history ( P>0.05). There was also no statistically significant difference in the distribution of pain score, duration of lesions and duration of pain across the three groups ( P>0.05). Conclusion:Wild strains are the predominant pathogens in herpes zoster cases under 20 years old in Beijing City during 2017-2021. The varicella vaccination has no significant impact on the clinical manifestations of herpes zoster cases.
4.Evaluation of renal cortex elasticity in patients with hypertension by shear wave elastography
Jianfeng LUO ; Miaolei DAI ; Haiyan YE ; Jingbin YAN ; Yangyang LI ; Ganfeng FAN
China Modern Doctor 2024;62(17):42-46
Objective To explore the clinical value of shear wave elastic imaging(SWE)for renal cortical elasticity in patients with hypertension.Methods According to the diagnostic criteria of 2020 International Society of Hypertension(ISH)Global Hypertension Practice Guidelines,44 patients with simple hypertension admitted to the Department of Cardiology of our hospital were selected and 46 healthy controls were selected for the same period.The general data and and renal function indicators of blood biochemical were recorded.All subjects were examined by two-dimensional ultrasound and SWE elasticity to obtain the conventional ultrasound parameters and the Young's modulus(YM)value of the right.The above parameters between the two groups were compared.The influence factors were analyzed by multiple linear regression among the YM value of the right renal cortex,the general data,conventional ultrasound indicators and renal function indicators in the simple hypertension group.Results The course,systolic blood pressure(SBP)and diastolic blood pressure(DBP)in the simple hypertension group was higher than those in the control group,and the difference was statistically significant(P<0.05).The YM value of the right renal cortex in the simple hypertension group was higher than that in the control group,and the difference was statistically significant(P<0.05).The correlation analysis showed that the YM value of the right renal cortex was positively correlated with the duration of hypertension(P<0.05),but not with age,blood pressure,right renal volume,right renal cortex thickness,right renal artery trunk peak systolic flow velocity(PSV),right renal artery trunk resistance index(RI),blood urea nitrogen,blood creatinine,or uric acid(P>0.05).Further simple linear regression analysis showed that the duration of hypertension was an independent factor affecting the YM value of the right renal cortex.Conclusion SWE may be used to find the variation in elasticity of renal cortex in patients with simple hypertension.
5.Clinical expert consensus on platelet-rich plasma treatment for lateral epicondylitis (2022 version)
Jian LI ; Guoqing CUI ; Chengqi HE ; Shiyi CHEN ; Boxu CHEN ; Hong CHEN ; Xuesong DAI ; Hongchen HE ; Hui KANG ; Tieshan LI ; Guoping LI ; Jiuzhou LU ; Chao MA ; Xin TANG ; Jun TAO ; Hong WANG ; Ming XIANG ; Dan XING ; Yiquan XIONG ; Qingyun XUE ; Rui YANG ; Tin YUAN ; Qiang ZHANG ; Jingbin ZHOU ; Weihong ZHU ; Yan XIONG ; Yan LIU
Chinese Journal of Trauma 2022;38(8):673-680
Lateral epicondylitis is a common clinical disease with characteristics of lateral elbow pain, insidious onset and easy recurrence, which can cause forearm pain and decreased wrist strength, seriously affecting patients′ daily life and work. Although there are various treatment methods for lateral epicondylitis with different effects, standard treatments are still lacking nowadays. Platelet-rich plasma (PRP) has good effects on bone and tendon repair, and is now widely used in the treatment of lateral epicondylitis. However, there is a lack of a unified understanding of the technology and specifications of PRP in the treatment of lateral epicondylitis. Therefore, the Sports Medicine Branch of the Chinese Medical Association and Physical Medicine and Rehabilitation Branch of the Chinese Medical Association organized experts in the fields of sports medicine and rehabilitation medicine in China to formulate the "clinical expert consensus on platelet-rich plasma treatment for lateral epicondylitis (2022 version)", and proposed suggestions based on evidence-based medicine mainly from the concept, epidemiology and pathophysiology of lateral epicondylitis, symptoms, signs and imaging manifestations of lateral epicondylitis, PRP concept and application component requirements, quality control of PRP preparation technology, indications and contraindications of PRP in the treatment of lateral epicondylitis, PRP injection in the treatment of lateral epicondylitis, application of PRP in the operation of lateral epicondylitis, related problems after PRP treatment of lateral epicondylitis, evaluation of the results after PRP treatment of lateral epicondylitis, and health and economic evaluation of PRP treatment of lateral epicondylitis, so as to provide guidance for clinical diagnosis and treatment.
6.The value of synthetic MRI in the differential diagnosis of benign and malignant breast lesions
Weibo GAO ; Quanxin YANG ; Xin CHEN ; Xiaocheng WEI ; Xiaohui LI ; Yanyan ZHANG ; Baobin GUO ; Wei HUANG ; Jingbin ZHANG
Chinese Journal of Radiology 2021;55(6):605-608
Objective:To investigate the diagnostic value of synthetic MRI methods in the differentiation of benign and malignant breast lesions.Methods:Clinical and imaging data of 93 breast patients confirmed by pathology in the Second Affifiliated Hospital of Xi′an Jiaotong University from May 2019 to April 2020 were analyzed retrospectively. All patients underwent synthetic MRI technique, and the quantitative parameters of T 1, T 2, and proton density (PD) values were measured. Independent samples t-test and Wilcoxon test were used to compare the differences in clinical and imaging characteristics between the benign and malignant breast lesions. ROC curve was used for the comparison of the diagnostic efficacy of the quantitative parameters in differentiating malignant from benign breast lesions. Results:Of the 93 patients with breast lesions, 62 cases were malignant and 31 cases were benign. The quantitative T 2 values for benign and malignant lesions were 103 (93, 126)ms and 83 (77, 90)ms respectively, and the quantitative PD values were 87.7 (72.7, 96.7)pu and 73.5(63.3, 79.4)pu respectively. There were statistically significant differences between benign and malignant lesion( P<0.05). Taking quantitative T 2 values of 90.5 ms and PD values of 84.8 pu as the cut-off value, the area under the ROC curve in differentiating benign from malignant breast lesions were 0.87 and 0.75, accuracy values were 80.6% and 78.5%, specificity values were 87.1% and 54.8%, sensitivity values were 77.4% and 90.3% respectively. Conclusion:Synthetic MRI methods can be applied in the examination of breast lesions and has the potential to be an effective diagnostic method for the differential diagnosis between benign and malignant lesions of breast.
7.Status of Residual Drug Management in 50 Medical Institutions in China and Its Control Mode Construction and Appli cation Practice in Our H ospital
Dan LIU ; Jingbin HUANG ; Qing QIAN ; Weiping LI ; Qing WANG ; Rong ZHANG
China Pharmacy 2020;31(8):897-901
OBJECTIVE:To understand the current management situation and problems of residual drugs in medical institutions in China ,evaluate the practice effect of corresponding control mode of our hospital and to explore the countermeasures to reduce the production of residual drugs and standardize its management. METHODS :By random sampling ,30 third-level hospitals and 20 second-level hospitals in different regions were selected respectively during May 1st to 31st in 2019. For the pharmaceutical personnel,doctors,nurses and other non-pharmaceutical personnel ,a self-designed questionnaire on the status quo of residual drugs in medical institutions was issued. Excel 2010 software was used to count basic data of valid questionnaire ,and the causes , management status ,disposal status and possible hazards of residual drugs in medical institutions were analyzed. A management mode of residual drugs was established and implemented (involving reducing the generation of sources ,implementing process management,and strictly implementing disposal ). The effects of the model were evaluated ,then the countermeasures and suggestions were put forward . RESULTS & CONCLUSIONS:A total of 400 questionnaires were sent out ,and 311 valid questionnaires were collected with effective recovery rate of 77.75%. The causes of drug residual were complicated ,which included the“combination”of the same drugs ,the pre-order dispensing ,adverse drug reactions ,poor compliance of patients ,wrong order imput,sudden transfer ,discharge or death of patients ,wrong dispensing or nurse check error ,etc. The management status of residual drugs was chaotic ,the disposal methods lacked of standardization ,which may lead to harm such as deterioration ,illegal Δ 基金项目:重庆市技术预见与制度创新项目(No.cstc2018jsyj- recycling and pollution . The established whole-link residual zdcxX0093) drug management model in our hospital ,mainly included *主管药师 ,硕士。研究方向 :药事管理 、抗肿瘤药理 。电话: measures of introducing Clinical Departments Residual Drug 023-68774769。E-mail:513293274@qq.com Safety Management Regulations to clarify the responsibilities # 通信作者:主任药师,博士生导师,博士。研究方向:药事管理、 of management group , clinical department , pharmacy 临床药学。电话:023-68755580。E-mail:zrcq73@163.com department; using rational medication control software to 中国药房 2020年第31卷第8期 China Pharmacy 2020Vol. 31 No. 8 ·897· reduce prescription error ;increasing the frequ ency of drug inventory ;introducing Drug Withdrawal and Refund Management to clear out drug withdrwal process ;independently researching and developing “Residual Drug Recovery Management System ”to standardize and simplify the recovery process ;bringing the residual drugs into special fund project management for medical assistance. According to the operation management practice from Jan. to Oct. 2018,a total of more than 1 million yuan worth of residual drugs were recovered. The residual drugs that did not meet the recovery conditions should be destroyed according to the specified process ,and the case number of non-standard notification of ward management would significantly reduced. The whole-link mode management established by our hospital can effectively reduce the production of residual drugs and standardize their management and disposal. It is suggested that the state or province should issue special regulations on the management of residual drugs in medical institutions ,and each medical institution should formulate specific management measures suitable for its own unit. Meanwhile ,the management of residual drugs in medical institutions should be further standardized systematically by actively exploring the ways to reduce residual drugs ,formulating the corresponding financial account processing standards , supporting incentive mechanism and other measures.
8.Systematic reviews and evidence quality assessment on effectiveness of 1 dose varicella attenuated live vaccine for healthy children aged 1-12 years in China
Zhujiazi ZHANG ; Luodan SUO ; Dan ZHAO ; Jingbin PAN ; Li LU
Chinese Journal of Epidemiology 2020;41(7):1138-1144
Objective:To assess the effectiveness of 1 dose varicella attenuated live vaccine (VarV) for healthy children aged 1-12 years in China and explore the application of the Grades of Recommendation, Assessment, Development, and Evaluation (GRADE) framework in observational studies of vaccine effectiveness (VE).Methods:We searched studies about the VE of 1-dose VarV for children aged 1-12 years in China which published before 2019 and evaluated the quality of the studies by the Newcastle Ottawa Scale (NOS) table. We used Meta-analysis models to obtain the pooled 1-dose VE and that in subgroups by study design, outbreak or not, study quality and age of subjects. The evidences of VEs were rated by means of the GRADE system.Results:Thirty-two studies were included and the pooled 1-dose VE was 75% [95% confidence interval ( CI): 68%-80%]. The VE of outbreak studies [VE=66% (95 %CI: 57%-73%)] was lower than non-outbreak studies [VE=85% (95 %CI: 78%-89%)], and the VE in <6 years old children [VE=84% (95 %CI:77%-89%)] was higher than that in ≥6 years old children [VE=60% (95 %CI: 51%-68%)]. There was no significant difference in VE among studies with different design and quality. The quality of the evidences of pooled 1-dose VE was"very low", which was downgraded in bias risk and inconsistency and not downgraded in indirectness, imprecision and publication bias. Conclusions:The 1-dose VarV can provide medium level protection for 1-12 years old children in China, but it will decrease significantly for ≥6 years old children, so it is suggested to implement the strategies of two-dose vaccination of VarV in children <6 years old. The GRADE framework can be used in the observational studies of VE and it is suggested that the technical guidelines of observational study should be worked out to improve the overall quality of evidence.
9.Surveillance of immunization effectiveness and titer of type Ⅰ and type Ⅲ polio vaccine in Beijing before and after the adjustment of immunization strategy in 2012-2018
Juan LI ; Zhujiazi ZHANG ; Jingbin PAN ; Herun ZHANG ; Renqing LI ; Maozhong LI ; Li LU ; Fang HUANG ; Jiang WU
Chinese Journal of Preventive Medicine 2020;54(7):779-783
Objective:To analyze the changing trend of polio vaccine immunization effectiveness and vaccine titer in Beijing in 2012, 2014, 2016 and 2018 before and after the adjustment of polio vaccine immunization program strategy.Methods:According to the convenient sampling method,the vaccination clinics of Chaoyang and Yanqing Districts in 2012, Fengtai and Daxing Districts in 2014, Tongzhou and Pinggu Districts in 2016, Dongcheng and Shunyi Districts in 2018 were selected as monitoring points. A total of 292 children were selected 4-8 weeks after the completion of 3 doses polio vaccine basic immunization which were 3 doses of trivalent oral poliovirus vaccine(tOPV)schedule before the strategy adjustment in 2012-2014 and 1 dose of inactivated poliovirus vaccine (IPV) following 2 doses of bivalent oral poliovirus vaccine (bOPV) sequential schedule after the adjustment in 2016-2018. About 1.0 ml blood samples were collected to detect type Ⅰ and Ⅲ neutralizing poliovirus antibody. A total of 9 oral poliovirus vaccines (8 vaccines in 2012) were selected from different sources of vaccine storage every year to test the vaccine titer using random number method .Results:The [ M( P25, P75)] age of 292 children was 5 (5, 6) months, and the ratio of male to female was 1.04 (149/143). In 2012, 2014, 2016 and 2018, 66,72,68 and 86 children were investigated respectively. After basic immunization, antibody positive rates for type Ⅰ and Ⅲ poliovirus were 100%, except 98.61% (71) for type Ⅰ poliovirus in 2014. The neutralizing antibody titer of type Ⅰ and Ⅲ poliovirus was higher in 2016 and 2018 than that in 2012 and 2014 ( P<0.001). The average titer of tOPV were (6.05±0.15) and (6.16±0.12) lgCCID 50 per dose in 2012 and 2014. The average titer of bOPV were (6.88±0.21) and (6.26±0.14) lgCCID 50 per 100 μl in 2016 and 2018 ( P<0.001). Conclusion:Before and after the adjustment of polio vaccine immunization strategy in Beijing, the basic immunization success rate of the IPV-bOPV sequential immunization schedule was good as well as full tOPV schedule. The level of polio antibody produced by the IPV-bOPV sequential immunization schedule was higher. After adjustment, bOPV titer in 2016 was significantly higher than those before adjustment, while bOPV titer decreased significantly in 2018.
10.Surveillance of immunization effectiveness and titer of type Ⅰ and type Ⅲ polio vaccine in Beijing before and after the adjustment of immunization strategy in 2012-2018
Juan LI ; Zhujiazi ZHANG ; Jingbin PAN ; Herun ZHANG ; Renqing LI ; Maozhong LI ; Li LU ; Fang HUANG ; Jiang WU
Chinese Journal of Preventive Medicine 2020;54(7):779-783
Objective:To analyze the changing trend of polio vaccine immunization effectiveness and vaccine titer in Beijing in 2012, 2014, 2016 and 2018 before and after the adjustment of polio vaccine immunization program strategy.Methods:According to the convenient sampling method,the vaccination clinics of Chaoyang and Yanqing Districts in 2012, Fengtai and Daxing Districts in 2014, Tongzhou and Pinggu Districts in 2016, Dongcheng and Shunyi Districts in 2018 were selected as monitoring points. A total of 292 children were selected 4-8 weeks after the completion of 3 doses polio vaccine basic immunization which were 3 doses of trivalent oral poliovirus vaccine(tOPV)schedule before the strategy adjustment in 2012-2014 and 1 dose of inactivated poliovirus vaccine (IPV) following 2 doses of bivalent oral poliovirus vaccine (bOPV) sequential schedule after the adjustment in 2016-2018. About 1.0 ml blood samples were collected to detect type Ⅰ and Ⅲ neutralizing poliovirus antibody. A total of 9 oral poliovirus vaccines (8 vaccines in 2012) were selected from different sources of vaccine storage every year to test the vaccine titer using random number method .Results:The [ M( P25, P75)] age of 292 children was 5 (5, 6) months, and the ratio of male to female was 1.04 (149/143). In 2012, 2014, 2016 and 2018, 66,72,68 and 86 children were investigated respectively. After basic immunization, antibody positive rates for type Ⅰ and Ⅲ poliovirus were 100%, except 98.61% (71) for type Ⅰ poliovirus in 2014. The neutralizing antibody titer of type Ⅰ and Ⅲ poliovirus was higher in 2016 and 2018 than that in 2012 and 2014 ( P<0.001). The average titer of tOPV were (6.05±0.15) and (6.16±0.12) lgCCID 50 per dose in 2012 and 2014. The average titer of bOPV were (6.88±0.21) and (6.26±0.14) lgCCID 50 per 100 μl in 2016 and 2018 ( P<0.001). Conclusion:Before and after the adjustment of polio vaccine immunization strategy in Beijing, the basic immunization success rate of the IPV-bOPV sequential immunization schedule was good as well as full tOPV schedule. The level of polio antibody produced by the IPV-bOPV sequential immunization schedule was higher. After adjustment, bOPV titer in 2016 was significantly higher than those before adjustment, while bOPV titer decreased significantly in 2018.

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