Objective: To investigate the status of tuberculin skin test (TST) results and the influencing factors among student close contacts with pulmonary tuberculosis, so as to provide the evidence for developing prevention and control strategies for pulmonary tuberculosis among students. Methods: The students aged 15 years and above who had close contact with pulmonary tuberculosis cases in Yuecheng District, Shaoxing City, Zhejiang Province, from October 2016 to December 2023 were recruited and investigated using questionnaires and TST to collect demographic information, contact history, and TST results. The influencing factors for TST positivity among student close contacts with pulmonary tuberculosis were analyzed using a multivariable logistic regression model. Results: A total of 5 507 student close contacts were investigated, including 2 982 males and 2 525 females, with a male-to-female ratio of 1.18∶1. The mean age was (19.10±1.71) years. Among them, 397 (7.21%) were technical secondary school students, 766 (13.91%) were senior high school students, 2 556 (46.41%) were junior college students, and 1 788 (32.47%) were college students or above. A total of 958 students tested positive for TST, with a positivity rate of 17.40%. The rates of general positivity, moderate positivity, and strong positivity were 10.53%, 4.98% and 1.89%, respectively. Multivariable logistic regression analysis showed that senior high school students (OR=1.473, 95%CI: 1.009-2.152) and junior college students (OR=1.467, 95%CI: 1.074-2.005), as well as those with an exposure-to-screening interval of ≥46 days (46-<61 days, OR=2.043, 95%CI: 1.478-2.826; ≥61 days, OR=1.291, 95%CI: 1.018-1.637) had a higher risk of TST positivity. Female student close contacts had a lower risk of TST positivity (OR=0.753, 95%CI: 0.649-0.873). Conclusion The TST positivity rate was relatively high, and gender, school type, and exposure-to-screening interval were influencing factors for TST positivity among student close contacts with pulmonary tuberculosis.

ObjectiveTo analyze the influencing factors for recurrence in successfully treated pulmonary tuberculosis patients with isoniazid-resistant and rifampicin-sensitive in Shaoxing City, Zhejiang Province. MethodsData on general demographic information, treatment information and drug susceptibility test results for pulmonary tuberculosis patients admitted to the designated tuberculosis medical institutions and registered in the tuberculosis information management system was collected in Shaoxing City from January 2011 to August 2024. A total of 428 patients with isoniazid resistance (including isoniazid single resistance and multiple resistance) but who were successfully treated were included in the study. Information for the recurrence after successful treatment of the patients was analyzed. The Cox proportional hazards models were used to analyze the influencing factors of recurrence in patients. ResultsAmong the 428 successfully treated patients included in the study, 31 cases (accounting for 7.24%) had recurrence by the end of the observation period, with a recurrence rate density of 1.31 per 100 person-years and a median recurrence time of 0.99 (0.08, 8.27) years. Among the relapsed population, 51.61% of the patients relapsed within one year after successful treatment. 77.42% of the patients relapsed within two years after successful treatment. Multivariate Cox regression analysis showed that when isoniazid resistance was discovered, the diagnosis classification of relapse (HR=4.115, 95%CI: 1.734‒9.767) and positive 0-month sequence smear (HR=4.457, 95%CI: 1.053‒18.866) were risk factors for recurrence after successful treatment in patients. ConclusionRegular follow-up should be strengthened for at least two years after the successful treatment of isoniazid-resistant pulmonary tuberculosis patients. Special attention should be paid to the treatment effect and regular re-examination and monitoring after the end of the treatment course of isoniazid-resistant pulmonary tuberculosis patients who have been re-treated and were sputum smear positive at baseline, so as to prevent recurrence and disease progression in high-risk populations.

Objective: To investigate the spatio-temporal clustering characteristics of pulmonary tuberculosis (PTB) aged 60 years and above in Shaoxing City from 2019 to 2023, so as to provide insights into prevention and control of PTB among the elderly. Methods: Data of PTB cases aged 60 years and above in Shaoxing City from 2019 to 2023 were collected from Tuberculosis Management Information System of Chinese Disease Prevention and Control Information System. The population data were collected from Shaoxing Statistical Yearbook. Vector map information was collected from Shaoxing Geographic Information Public Service Platform. The spatio-temporal clustering characteristics of PTB cases aged 60 years and above were analyzed using global spatial autocorrelation, local spatial autocorrelation and spatio-temporal scanning. Results: Totally 3 722 PTB cases aged 60 years and above were registered in Shaoxing City. The average annual registration rate was 61.71/105, showing no significant trend (P>0.05). Totally 2 548 pathogenetically positive cases were registered, with an average annual registration rate of 42.25/105. Spatial autocorrelation analysis showed there was a positive spatial correlation of PTB in 2019 and 2021 (both Moran's I>0, both P<0.05). Shengzhou City showed a high-low clustering, and Keqiao District and Shangyu District showed a low-low clustering. Spatio-temporal scanning analysis showed that a class Ⅰ cluster was located in Shengzhou City, with aggregation time from March 1, 2019 to August 31, 2021. The class Ⅱ clusters were located in Zhuji City, Shangyu City and Keqiao District, with aggregation time from March 1, 2021 to August 31, 2023, from April 1, 2021 to September 30, 2023, and from June 1, 2021 to November 30, 2023, respectively. Conclusion The PTB cases aged 60 years and above in Shaoxing City from 2019 to 2023 mainly concentrated in Shengzhou City, where the prevention and control of PTB among the elderly should be strengthened.

Objective:To investigate the correlation between coronary artery calcification(CAC)scores based on computed tomography(CT)on chest and perioperative complications of emergency percutaneous coronary intervention(PCI)of patients with acute ST-segment elevation myocardial infarction(STEMI).Methods:A total of 263 STEMI patients who admitted to the Chest Pain Center of the Department of Cardiovascular Medicine of Baoding NO.1 Central Hospital from March 2020 to July 2021 were selected.All of them underwent CT examination on chest,and were assessed by CAC scores.They were divided into no calcification and mild group(0～2 scores,129 cases),moderate calcification group(3～5 scores,88 cases)and severe calcification group(6-9 scores,46 cases)according to CAC scores.Perioperative complications and major cardiovascular events(MACE)of patients with different degrees of calcification in the follow-up period were analyzed.The differences among different groups were compared.The correlation between CAC scores and perioperative complications of emergency PCI was further analyzed.Results:Compared with patients of no calcification and mild group,the ages of patients of moderate and severe calcification groups were older(x2=45.815,P＜0.05),and the incidences of hypertension,cerebral infarction,diabetes,multi-vessel disease and MACE of moderate and severe calcification groups were significantly higher(x2=6.762,11.071,6.064,25.036,21.694,P＜0.05).There were significant differences in eGFR and NT-ProBNP levels among the 3 groups(F=8.592,Z=20.890,P＜0.05).Compared with the severe calcification group,the incidence of coronary thrombosis was higher in the no calcification and mild group(x2=7.748,P＜0.05).According to logistic regression analysis,the patients with coronary thrombosis,moderate and severe calcification were more likely to have minor complications(OR=4.847,5.280,11.135,P＜0.001).Patients with older age,hypertension or severe calcification of coronary artery were more likely to occur serious complications,and the MACE incidence was higher within 1 year after surgery(OR=1.151,7.982,10.555,21.729,P＜0.05).Conclusion:Patients with moderate and severe calcification lesions who are assessed by CAC scores based on chest CT have a higher incidence of perioperative complications.CAC scores based on chest CT can be used to assess perioperative complications of emergency PCI and MACE within 1 year after surgery.

Objective: To investigate the epidemiological characteristics of genital Chlamydia trachomatis infections in Shaoxing City from 2012 to 2021, so as to provide the evidence for improving the control strategy of genital C. trachomatis infections. Methods: Data pertaining of patients with genital C. trachomatis infections in Shaoxing City from 2012 to 2021 were retrieved from Chinese Disease Prevention and Control Information System, and the incidence of genital C. trachomatis infections was calculated. The trends in incidence of genital C. trachomatis infections were analyzed using annual percent change (APC), and temporal, human and temporal distributions of genital C. trachomatis infections were descriptively analyzed. Results: A total of 18 235 cases with genital C. trachomatis infection were reported in Shaoxing City from 2012 to 2021, and the annual average incidence was 36.36/105. The incidence of genital C. trachomatis infections appeared a tendency towards a rise in Shaoxing City from 2012 to 2021 (APC=4.51%, t=2.663, P=0.029). The reported incidence of genital C. trachomatis infections was significantly higher among females than among males (60.46/105 vs. 12.50/105; χ2=7 935.467, P<0.001), and 76.04% infections (13 866 cases) occurred at ages of 20 to <40 years, while a high incidence rate of genital C. trachomatis infections was seen among patients at ages of 25 to <30 years (154.23/105). In addition, high incidence rates were seen in Keqiao District (57.93/105) and Yuecheng District (51.78/105). Conclusions The incidence of genital C. trachomatis infections appeared a tendency towards a rise in Shaoxing City from 2012 to 2021, and the infection predominately occurred among women and young individuals.

Objective:To evaluate the relationship between hippocampal macrophage polarization and perioperative neurocognitive disorders in mice with tibial fractures.Methods:Forty-five clean-grade healthy male C57/BL6 mice, aged 5-7 months, were divided into 3 groups ( n=15 each) using the random number table method: control group (group C), anesthesia group (group A) and anesthesia surgery group (group AS). Group C received no treatment. Group A was anesthetized with isoflurane inhaled for 15 min. In AS group, intramedullary nail fixation of tibial fracture was performed under anesthesia through inhalation of 2% isoflurane. Morris water maze test and open field test were performed before anesthesia/on 1 day before surgery and after anesthesia/on 1, 3 and 7 days after operation. Five mice were randomly selected after the behavioral experiments were completed at each time point, and hippocampal tissues were taken after the animals were sacrificed for determination of the expression of tumor necrosis factor-alpha (TNF-α), interleukin-1 beta (IL-1β), IL-6, chemokine (c-c motif) ligand 12 (CCL2), CCL5, CCL8, iNOS and Arg-1 mRNA (by quantitative real-time polymerase chain reaction), expression of iNOS and Arg-1 proteins (by Western blot), and percentage of CD11b, CD45, CD86 and CD206 cells in hippcampal area (by immunofluorescence staining). Results:Compared with group C, the escape latency was significantly prolonged after operation, the number of crossing the platform was reduced after operation, the expression of TNF-ɑ, IL-6, CCL5 and CCL8 mRNA and iNOS protein and mRNA was up-regulated, the expression of Arg-1 protein and mRNA was down-regulated, the percentages of CD11b + CD45 + cells and CD11b + CD86 + cells in the hippocampus were increased, and the percentages of CD11b + CD206 + cells were decreased in AS group ( P<0.05), and no significant change was found in the parameters mentioned above in group A ( P>0.05). Compared with group A, the escape latency was significantly prolonged after surgery, the frequency of crossing the platform was reduced after surgery, the expression of iNOS mRNA was up-regulated, the percentages of CD11b + CD45 + cells and CD11b + CD86 + cells were increased, and the percentages of CD11b + CD206 + cells were decreased in AS group ( P<0.05). Conclusions:The occurrence of PND may be related to increased polarization to M1 macrophages in the hippocampus and decreased polarization to M2 macrophages in mice with tibial fracture, which further leads to central inflammatory responses.

Objective:To investigate the application and effects of WeChat official account in improving the nursing trainees' core post competency.Methods:The study included in 105 nursing trainees of Batch 2015 as experimental group, taking the nursing practice WeChat official account based on the routine clinical teaching pattern, and 95 nursing trainees of Batch 2014 as control group, taking traditional teaching mode. At the end of the internship, the scores of special examinations for nursing students and the national examination for nursing qualifications ("nursing qualification examination" for short) of the two group were compared, and the critical thinking ability, ability to acquire information lifelong learning ability, nurse-patient clinical communication ability and teaching satisfaction of the two groups of students were analyzed. SPSS 23.0 software was used for t test. Results:The scores of special examinations, nursing qualification examination and each module at main dimensions of the core post competency of nursing students in the experimental group were higher than those in the control group ( P<0.05). The nursing trainees in the experimental group were satisfied with the teaching effects of the WeChat official account. Conclusion:The WeChat official account in clinical nursing practice helps improve the quality of clinical practice teaching and assist in enhancing core post competency of nursing trainees.

Objective : To investigate the expression and prognosis of urokinase plasminogen activator (PLAU) and v-akt murine thymoma viral oncogene homolog 1 (AKT1) in oral squamous cell carcinoma ( OSCC) and normal tis- sues and the correlation of PLAU and AKT1 in OSCC tissues． Methods : The expression levels of PLAU and AKT1 in 70 cases of oral squamous cell carcinoma and 50 cases of normal tissues were detected by immunohistochemical method，and the correlation between PLAU and AKT1 expression and clinicopathological features and prognosis as well as the correlation between PLAU and AKT1 expression in OSCC tissues was analyzed，and the results were fur- ther verified by bioinformatics database. Results : The expression of PLAU and AKT1 in OSCC tissues was higher than that in normal tissues (P＜0. 05) ，Kaplan-Meier analysis showed that patients with low PLAU and AKT1 ex- pression had longer survival time than those with high AKT1 expression (P＜0. 05) ，Spearman rank sum correlation test showed that there was a strong correlation between PLAU and AKT1 expression in OSCC tissues (r = 0. 357，P ＜0. 05) ，GEPIA bioinformatics database analysis results are consistent with experimental results． Conclusion PLAU and AKT1 are highly expressed in OSCC tissues and are associated with poor prognosis of patients．There is a correlation between PLAU and AKT1 in OSCC tissues.

Objective:To establish a disease risk prediction model for the newborn screening system of inherited metabolic diseases by artificial intelligence technology.Methods:This was a retrospectively study. Newborn screening data ( n=5 907 547) from February 2010 to May 2019 from 31 hospitals in China and verified data ( n=3 028) from 34 hospitals of the same period were collected to establish the artificial intelligence model for the prediction of inherited metabolic diseases in neonates. The validity of the artificial intelligence disease risk prediction model was verified by 360 814 newborns ' screening data from January 2018 to September 2018 through a single-blind experiment. The effectiveness of the artificial intelligence disease risk prediction model was verified by comparing the detection rate of clinically confirmed cases, the positive rate of initial screening and the positive predictive value between the clinicians and the artificial intelligence prediction model of inherited metabolic diseases. Results:A total of 3 665 697 newborns ' screening data were collected including 3 019 cases ' positive data to establish the 16 artificial intelligence models for 32 inherited metabolic diseases. The single-blind experiment ( n=360 814) showed that 45 clinically diagnosed infants were detected by both artificial intelligence model and clinicians. A total of 2 684 cases were positive in tandem mass spectrometry screening and 1 694 cases were with high risk in artificial intelligence prediction model of inherited metabolic diseases, with the positive rates of tandem 0.74% (2 684/360 814)and 0.46% (1 694/360 814), respectively. Compared to clinicians, the positive rate of newborns was reduced by 36.89% (990/2 684) after the application of the artificial intelligence model, and the positive predictive values of clinicians and artificial intelligence prediction model of inherited metabolic diseases were 1.68% (45/2 684) and 2.66% (45/1 694) respectively. Conclusion:An accurate, fast, and the lower false positive rate auxiliary diagnosis system for neonatal inherited metabolic diseases by artificial intelligence technology has been established, which may have an important clinical value.

Objective:To investigate the etiology of necrotizing pneumonia (NP) in children and the clinical characteristics of NP caused by different pathogens in China.Methods:A retrospective, case-control study was performed in children with NP who were admitted to 13 hospitals in China from January 2008 to December 2019. The demographic and clinical information, laboratory data, etiological and radiological findings were analyzed. The data were divided into three groups based on the following years: 2008-2011, 2012-2015 and 2016-2019, and the distribution characteristics of the pathogens in different period were compared. Meanwhile, the pathogens of pediatric NP in the southern and northern China were compared. And the clinical characteristics of the Mycoplasma pneumoniae (MP) NP and the bacterial NP were also compared. T-test or Mann-Whitney nonparametric test was used for comparison of numerical variables, and χ 2 test was used for categorical variables. Results:A total of 494 children with NP were enrolled, the median ages were 4.7 (0.1-15.3) years, including 272 boys and 222 girls. Among these patients, pathogens were identified in 347 cases and the pathogen was unclear in the remaining 147 cases. The main pathogens were MP (238 cases), Streptococcus pneumoniae (SP) (61 cases), Staphylococcus aureus (SA) (51 cases), Pseudomonas aeruginosa (13 cases), Haemophilus influenzae (10 cases), adenovirus (10 cases), and influenza virus A (7 cases), respectively. MP was the most common pathogen in all three periods and the proportion increased yearly. The proportion of MP in 2016-2019 was significantly higher than that in 2012-2015 (52.1% (197/378) vs. 36.8% (32/87), χ 2= 6.654, P=0.010), while there was no significant difference in the proportion of MP in 2012-2015 and that in 2008-2011 (36.8% (32/87) vs. 31.0% (9/29), χ2=0.314, P=0.575).Regarding the regional distribution, 342 cases were in the southern China and 152 in the northern China. Also, MP was the most common pathogen in both regions, but the proportion of MP was higher and the proportion of SP was lower in the north than those in the south (60.5% (92/152) vs. 42.7% (146/342), χ 2=13.409, P<0.010; 7.9% (12/152) vs. 14.3% (49/342), χ 2= 4.023, P=0.045). Comparing the clinical characteristics of different pathogens, we found that fever and cough were the common symptoms in both single MP and single bacterial groups, but chest pain was more common (17.0% (34/200) vs. 6.1% (6/98), χ 2=6.697, P=0.010) while shortness of breath and wheezing were less common in MP group (16.0% (32/200) vs. 60.2% (59/98), χ 2=60.688, P<0.01; 4.5% (9/200) vs. 21.4% (21/98), χ 2=20.819, P<0.01, respectively). The white blood cell count, C-reactive protein and procalcitonin in the bacterial group were significantly higher than those in the MP group (14.7 (1.0-67.1)×10 9/L vs. 10.5 (2.5-32.2)×10 9/L, 122.5 (0.5-277.3) mg/L vs. 51.4 (0.5-200.0) g/L, 2.13 (0.05-100.00) μg/L vs. 0.24 (0.01-18.85) μg/L, Z=-3.719, -5.901 and -7.765, all P<0.01). Conclusions:The prevalence of pediatric NP in China shows an increasing trend during the past years. MP, SP and SA are the main pathogens of NP, and the most common clinical symptoms are fever and cough. The WBC count, C-reactive protein and procalcitonin in bacterial NP are significantly higher than those caused by MP.