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Dietary patterns and thyroid cancer: a case-control studyin Hangzhou residents

REN Yanjun ; ZHANG Tiewei ; LIU Qingmin ; ZHAO Gang ; LU Feng ; GONG Weiwei ; YU Min

Journal of Preventive Medicine.2020;32(11):1081-1085. doi:0.19485/j.cnki.issn2096-5087.2020.11.001

Objective : To learn the association between dietary patterns and thyroid cancer in Hangzhou residents, and to provide evidence for thyroid cancer prevention. Methods: The newly diagnosed patients with thyroid cancer in Zhejiang Cancer Hospital were selected as the case group, while the healthy population matched (1∶1) by gender, age and residence were selected from community as the control group. A questionnaire survey was conducted to obtain demographic characteristics, disease history, dietary intake, lifestyle and other information. The dietary patterns were established by factor analysis. The multivariate conditional logistic regression model was conducted to explore the relationship between different dietary patterns and thyroid cancer. Results: A total of 258 pairs of cases and controls were recruited. Five dietary patterns were obtained, including vegetarian pattern, high-protein food pattern, salted vegetables and algae pattern, seafood and cereal pattern, as well as alcohol and tea pattern. The multivariate conditional logistic regression analysis suggested seafood and cereal pattern might reduce the risk of thyroid cancer (OR=0.286, 95%CI: 0.146-0.561). Conclusion More consumption of seafood and cereal may decrease the incidence of thyroid cancer.

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Adverse events following immunization of measles,mumps and rubella,ormeasles and rubella combined attenuated live vaccine among8-month-old children in Jiaxing

DU Zhequn ; HU Jie ; SHEN Guochu ; XU Rongquan

Journal of Preventive Medicine.2020;32(11):1086-1090. doi:10.19485/j.cnki.issn2096-5087.2020.11.002

Objective: To analyze the surveillance of adverse event following immunization (AEFI) among 8-month-old children in Jiaxing who received measles, mumps and rubella combined attenuated live vaccine (MMR) or measles and rubella combined attenuated live vaccine (MR) , so as to provide support for the adjustment of vaccine immunization strategy. Methods : The AEFI information of MR (December 1, 2016 to April 30, 2018) and MMR (December 1, 2018 to April 30, 2020) was collected through National AEFI Monitoring Information Management System to compare the incidence, clinical features, occurred time of AEFI as well as combined vaccination. Results: Totally 94 287 doses of MR and 79 994 doses of MMR were administered, 145 and 156 cases of AEFI were reported, and the incidence rate was 15.38/10 000 after MR vaccination, which was lower than 19.50/10 000 after MMR vaccination (P<0.05). Most reported AEFI were abnormal reactions, with 93 cases (11.63/10 000) after MR vaccination and 101 cases (10.71/10 000) after MMR vaccination, among which 72 cases (7.64/10 000) and 76 cases (9.50/10 000) respectively had allergic rash. The AEFI cases mainly occurred less than one day after vaccination, with 113 cases (77.93%) after MR vaccination and 125 cases (80.13%) after MMR vaccination. Most cases of AEFI were vaccinated with Japanese encephalitis attenuated live vaccine (JEV), with 103 cases (71.03%) after MR vaccination and 102 cases (65.38%) after MMR vaccination. Conclusions The MMR is safety for 8-month-old children in Jiaxing. Most AEFI cases had abnormal reactions, occur within one day after vaccination, and are vaccinated with JEV.

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Safety and immunogenicity of a split-virion quadrivalent influenza vaccine

LIU Shuzhen ; MENG Li ; XI Peipei ; ZHANG Yongchao ; FAN Bei ; LI Changgui ; XIA Shengli ; PAN Ruowen

Journal of Preventive Medicine.2020;32(11):1091-1095. doi:10.19485/j.cnki.issn2096-5087.2020.11.003

Objective : To evaluate the safety and immunogenicity of a split-virion quadrivalent influenza vaccine. Methods : The healthy people aged three years or over in Wuyang County and Xiping County of Henan Province were divided into the experimental group, control group 1 and control group 2, and were vaccinated with split-virion quadrivalent influenza vaccines, split-virion trivalent influenza vaccines (without B/Victoria) and a split-virion trivalent influenza vaccines (without B/Yamagata) , respectively. The hemagglutination inhibition (HI) antibodies were detected before and after immunization. The incidence rate of adverse events following immunization (AEFI) , HI antibody positive conversion rate, the protection rate of HI antibodies and the growth of geometric mean titer (GMT) were calculated and compared with the standard of Food and Drug Administration (FDA). Results: Totally 2 924 people were recruited, with 975 in the experimental group, 974 in the control group 1 and 975 in control group 2. The incidence rate of AEFI in the experimental group was 11.7%, higher than 7.9% in control group 1 and 8.8% in control group 2 (P < 0.05) during 30 minutes and 8 days after inoculation. The positive conversion rates of HI antibodies of H1N1, H3N2, By and Bv in the experimental group were 78.5%, 53.3%, 78.3% and 62.9%, respectively. The rate differences of the positive conversion rates of HI antibodies of By between the experimental group and control group 2, and of Bv between the experimental group and control group 1 were 42.1% (95%CI: 38.0%-46.2%) and 33.2% (95%CI: 28.9%-37.5%) , with both lower limits of 95%CI more than -0.10. The GMT increase of HI antibodies was more than 2.5 times in the three groups. The protective rates of HI antibodies of H1N1, H3N2, By and Bv in the experimental group were 87.7%, 98.7%, 93.6% and 77.2%, respectively. The protective rates of HI antibodies of By in control group 2 and Bv in control group 1 were 71.1% and 51.0%, both lower than those in the experimental group (P < 0.05). Conclusions After the inoculation of the quadrivalent influenza vaccine, the positive conversion rates (>40%) , protection rates (>70%) and GMT increase (>2.5 times) of HI antibodies of H1N1, H3N2, By and Bv all meet the quality standards of FDA. The safety and immunogenicity of the quadrivalent influenza vaccine are not inferior to those of the trivalent influenza vaccine.

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The pollution of metal elements in PM2.5 at the metro stations

WANG Kai ; ZHANG Xia ; SU Jin

Journal of Preventive Medicine.2020;32(11):1096-1099. doi:10.19485/j.cnki.issn2096-5087.2020.11.004

Objective : To investigate the pollution of metal elements in PM2.5 at the metro station by monitoring, so as to provide evidence for health protection strategies. Methods: The PM2.5 concentrations on the platforms, in the tunnels, and above the ground of two selected metro stations in some city were collected and measured by electronic balance. The concentrations of Fe, Al, Cu, Mn, Ni, Pb, Zn, Cr, Ba and Cd in PM2.5 were determined by inductively coupled plasma mass spectrometry (ICP-MS). The pollution index (PI) and enrichment factor (EF) of these elements were analyzed. Results: The concentration of PM2.5 was (101.46±32.88) μg/m3 on the platforms, (104.42±32.95) μg/m3 in the tunnels and (74.25±13.29) μg/m3 above the ground. The highest Fe concentrations were (33.19±5.93) μg/m3 on the platforms and (39.95±11.56) μg/m3 in the tunnels, accounting for (33.73±9.40)% and (42.72±17.17)% of PM2.5. The average PI values of Fe, Mn and Ba in PM2.5 on the platforms were 29.67, 9.24 and 7.13, in the tunnels were 36.30, 11.23 and 8.30, respectively, with very high level of pollution; the average EF values of Fe, Mn and Ba in PM2.5 on the platforms were 20.15, 4.55 and 4.33, in the tunnels were 19.44, 4.16 and 4.07, with serious, medium and medium level of enrichment, respectively. Conclusion The main metal pollutants in PM2.5 at the metro station are Fe, Mn and Ba, which are enriched in the metro environment.

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Prevalence and influencing factors of leprosy reactions from2010 to 2019 in Zhejiang Province

KONG Wenming ; YAO Qiang ; SHEN Yunliang ; WU Limei ; YU Xiaobing

Journal of Preventive Medicine.2020;32(11):1100-1103. doi:10.19485/j.cnki.issn2096-5087.2020.11.005

Objective : To analyze the prevalence and influencing factors of leprosy reactions in Zhejiang Province from 2010 to 2019, so as to provide reference for the control of leprosy. Methods: Through the national leprosy management system, the new leprosy cases in Zhejiang Province from 2010 to 2019 were recruited to analyze the incidence of leprosy reactions in different demographic characteristics and leprosy clinical features. The multivariate logistic regression analysis was conducted to explore the influencing factors for leprosy reactions. Results : Totally 191 leprosy cases were investigated. The incidence rate of leprosy reactions was 29.32%; the the incidence rate of typeⅠand type Ⅱreaction was 16.75% and 9.42%, respectively. There were 33 leprosy reaction cases (58.93%) before multidrug therapy (MDT) , 13 cases (23.21%) during 0-6 months of MDT, 5 cases (8.93%) during 7-12 months of MDT, 3 cases (5.36%) during over 12 months of MDT, and 2 cases (3.57%) after MDT. The results of the multivariate logistic analysis showed that the cases who were 35 years old or below (OR=2.245, 95%CI: 1.006-5.008) , were not floating population (OR=3.442, 95%CI: 1.394-8.494) , were infected outside family (OR=3.878, 95%CI: 1.075-13.993) and were smear positive (>0+,OR=4.514, 95%CI: 1.365-14.926; >3+,OR=4.727, 95%CI: 1.443-15.485) were risk factors for leprosy reactions. Conclusions The prevalence of leprosy reactions is high in Zhejiang Province from 2010 to 2019, and is associated with age, floating population, source of infection and BI.

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A meta analysis of associated factors for fatal pertussis in children

ZHAO Yan

Journal of Preventive Medicine.2020;32(11):1104-1110. doi:10.19485/j.cnki.issn2096-5087.2020.11.006

Objective: To learn the associated factors for fatal pertussis in children, so as to provide evidence for the prevention and treatment of fatal pertussis. Methods: We searched Pubmed, Embase, Ovid, Web of Science, Wanfang Data, CNKI and CBM up to May of 2020 for the analytical studies about the associated factors for fatal pertussis in children, and used weighted mean difference (WMD) and odds ratio (OR) for a meta analysis. Results : Finally 16 studies our of 5 418 preliminary ones were included. The meta analysis indicated that females (OR=1.36, 95%CI: 1.13-1.64) , low birth weight (WMD=-0.21, 95%CI: -0.40 - -0.03) , young age (WMD=-15.54, 95%CI: -28.97 - -2.10) , small gestational age (WMD=-0.96, 95%CI: -1.77 - -0.16), pertussis immunizations (OR=0.20, 95%CI: 0.11-0.36) , seizures (OR=9.88, 95%CI: 6.94-14.08), spasmodic cough (OR=0.61, 95%CI: 0.47-0.78), increased respiratory rate (WMD=10.68, 95%CI: 3.41-17.95) , increased heart rate (WMD=18.01, 95%CI: 7.33-28.69) , decreased percent oxygen saturation (WMD=-5.38, 95%CI: -10.36 - -0.39) , increased white blood cell counts (WMD=47.70, 95%CI: 40.95-54.46),increased absolute lymphocyte counts (WMD=17.03, 95%CI: 11.00-23.07) , increased absolute neutrophil counts (WMD=11.22, 95%CI: 6.04-16.40), pulmonary hypertension (OR=37.99, 95%CI: 16.76-86.13) , pneumonia (OR=37.65, 95%CI: 27.85-50.90) , encephalopathy (OR=23.38, 95%CI: 8.21-66.54) , any comorbidity (OR=3.00, 95%CI: 1.73-5.23), mechanical ventilation (OR=38.79, 95%CI: 11.81-127.42) , intubation (OR=297.36, 95%CI: 46.20-1 913.98), high-frequency ventilation (OR=18.34, 95%CI: 8.46-39.75) , extracorporeal membrane oxygenation (OR=47.49, 95%CI: 15.53-145.21), inhaled nitric oxide (OR=25.86, 95%CI: 8.52-78.43), use of vasoactive drugs (OR=54.42, 95%CI: 15.71-188.45) and blood exchange transfusion (OR=16.77, 95%CI: 6.53-43.09) were associated with fatal pertussis in children. The results of sensitivity analysis were stable. The results of Egger＇s assay showed publication bias in studies about spasmodic cough, encephalopathy and use of vasoactive drugs, while Begg＇s assay showed no publication bias at all. Conclusions Fatal pertussis in children is associated with gender, age, birth weight, gestational age as well as a variety of clinical features. Early identification and intervention are needed, and vaccination should be strengthened.

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Willingness of influenza vaccination among the communitymanaged diabetic patients in Keqiao District

CHEN Xiangyu ; FANG Le ; LU Feng ; GUO Lihua ; XU Chunxiao ; SHEN Diaoying ; FU Lingjuan ; ZHONG Jieming

Journal of Preventive Medicine.2020;32(11):1111-1114. doi:10.19485/j.cnki.issn2096-5087.2020.11.007

Objective: To learn the willingness and influencing factors of influenza vaccination among the community managed diabetic patients in Keqiao District, Shaoxing, so as to provide the basis for influenza vaccination promotion. Methods: A self-compiled questionnaire survey was conducted from October to December 2017 among all the managed diabetic patients in Keqiao District. The contents of questionnaire included the basic information of the respondents, awareness of influenza vaccine, vaccination status and vaccination intention. Logistic regression model was used to analyze the influencing factors for the willingness of influenza vaccination. Results: A total of 15 060 questionnaires were sent out and 13 781 valid ones were retrieved, the response rate was 91.51%. There were 3 888 patients with the awareness of influenza vaccine, accounting for 28.21%; 4 259 patients with the willingness to be vaccinated, accounting for 30.90%; 630 previously-vaccinated patients, accounting for 4.57%. The patients who were female (OR=1.157, 95%CI: 1.064-1.258) , were married (OR=1.242, 95%CI:1.107-1.393), were with other chronic diseases (OR=1.199, 95%CI: 1.103-1.303) , believed diabetic patients were more susceptible to influenza (OR=1.251, 95%CI: 1.102-1.419) , believed influenza aggravate diabetes status (OR=1.640, 95%CI: 1.445-1.860) , believed that the vaccination effectively prevent influenza (OR=3.129, 95%CI: 2.866-3.416) , knew about influenza vaccine (OR=1.111, 95%CI: 1.105-1.216) and ever received influenza vaccination (OR=1.316, 95%CI: 1.103-1.570) were more willing to be vaccinated. Conclusions The willingness of influenza vaccination among the community managed diabetic patients in Keqiao District is low. The patients＇gender, married status, other chronic diseases, awareness of influenza vaccine and the history of vaccination can affect the willingness of influenza vaccination.

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Public health risk assessment of imported infectious diseases in Jinhua

HAN Zongmei ; PANG Zhifeng ; ZHANG Guangming ; ZHU Hao

Journal of Preventive Medicine.2020;32(11):1115-1120. doi:10.19485/j.cnki.issn2096-5087.2020.11.008

Objective: To carry out an assessment on the public health risk of imported infectious diseases in Jinhua, so as to provide evidence for prevention and control strategies. Methods : Twenty-nine imported infectious diseases were recruited. A risk assessment index system was established by Delphi method and analytic hierarchy process. The actual values of each index of twenty-nine imported infectious diseases were obtained through special investigation,literature review and consultation. The risk scores were calculated by the improved technique for sequencing by approximate ideal solution (TOPSIS) and classified according to median. Results : Among 41 experts recruited, 38 experts were engaged in infectious disease prevention and control, 31 had senior professional titles, and all had worked for more than 10 years. Through three rounds of consultation by Delphi method and analytic hierarchy process, the risk assessment index system (target level) included four items in criteria levels, which were response capacity, public health impact, the possibility of import and local transmission and population vulnerability in a descending order of weight; twenty-seven indicators, with international attention level, levels of medical institutions with confirmed cases, the emergency response capacity of Centers for Disease Control and Prevention (CDCs) , and effective vaccines with wide coverage weighed higher. There were eleven high-risk diseases, high response capacities lay in dengue, malaria, Zika virus disease and Chikungunya fever. The response capacities for sixteen of the eighteen low-risk diseases were insufficient, especially in emergency response capacity of CDCs, laboratory testing capacity and hospital infection control ability. Conclusion Jinhua has strong capacities to deal with the incidence of dengue fever, malaria, Zika virus disease and Chikungunya fever, compared with other imported infectious diseases.

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Awareness of HIV testing results before sex among men who have sex with men

Wanjun CHEN ; Jianjun RUAN ; Bixiang ZHU ; Lianjuan LOU ; Junxian CHEN ; Lianqi ZHA ; Qiaoqin MA ; Lin CHEN ; Tingting JIANG ; Mingyu LUO

Journal of Preventive Medicine.2019;31(1):1-4. doi:10.19485/j.cnki.issn2096-5087.2019.01.001

Objective: To understand the awareness of HIV testing results before having sex among men who have sex with men （MSM） . Methods: The MSM from a gay bar in Zhejiang Province were recruited through convenience sampling method. A questionnaire survey was conducted to collect the information about demographic characteristics,sexual behaviors,awareness of HIV status between sexual partners and HIV testing results during August of the year 2016. The awareness of HIV testing results before having sex among MSM and the influencing factors were analyzed . Results: A total of 124 MSM were recruited in this study,56.56% of whom aged from 25 to 39 years,and 61.29% were single,divorced or widowed. The number of sexual partners they had in the last year ranged from 1 to 40,with median of 8. The MSM who had casual sexual partners accounted for 70.97%. The MSM who had regular HIV testing accounted for 90.32%,yet who would like to share the HIV testing reports with partners only accounted for 18.55%. Whether asking about the HIV status before having sex or not was associated with age,marriage status,the number and characters of sexual partners（P<0.05）. The MSM who were informed of the HIV status of commercial partners,casual partners and regular partners accounted for 0,5.10% and 19.77%,respectively. The main reasons for MSM not knowing about the HIV status of their sexual partners were“condom use would prevent HIV infection”（78.38%）,“never thought about HIV infection”（53.15%）,and “there was no need to ask as the partner looked healthy”（36.94%） . Conclusion The proportion of MSM who were aware of HIV testing results before having sex was not high and was associated with age,marriage status,the number and characters of sexual partners. Lack of knowledge about HIV infection might contributed to this low proportion.

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A case control study of risk factors for lung cancer

Yirong FANG ; Yan MA ; Shuhong XU ; Yingxin PEI

Journal of Preventive Medicine.2019;31(7):649-652. doi:10.19485/j.cnki.issn2096-5087.2019.07.001

Objective: To analyze the risk factors for lung cancer and to provide scientific evidence for prevention of lung cancer. Methods: A total of 461 newly diagnosed patients with primary lung cancer from January 2015 to June 2017 in Shaoxing were selected as the case group. Six hundred healthy residents with the same residence,distribution of gender and age as the cases were selected as the control group by frequency matching method. A questionnaire survey was conducted to collect demographic characteristics,family history of major chronic diseases,disease history and behavioral factors. The method of case-control study and multivariate logistic regression model were used for statistical analysis of the risk factors for lung cancer. Results: The results of multivariate logistic regression analysis showed that after adjusting for age and gender,family history of cancer（OR=6.606,95%CI：3.439-12.689）,history of lung diseases（OR=2.836,95%CI：1.208-6.659）,high level of stress（OR=2.485,95%CI：1.830-3.376）,low consumption of fresh vegetables（OR=3.116,95%CI：2.470-3.930）and smoking（OR=6.029,95%CI：3.716-9.783）were risk factors for lung cancer;after adjusting for age,gender,family history of cancer,history of lung diseases,stress levels and consumption of fresh vegetables,quitting smoking for less than ten years was a risk factor for lung cancer（OR=4.751,95%CI：2.404-9.386）compared with quitting smoking for ten years or above. Conclusion Family history of cancer,history of lung diseases,high level of stress,low consumption of fresh vegetables and smoking were risk factors for lung cancer.

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