2.Seroprevalence and risk factors for Toxoplasma gondii in sheep and goats in Jinzhou, Northeastern China
Xu, P., Li, X., Tang, F., Liu, Y.H., Kou, X., Zhao, M.L., Li, B., Guo, L., Liu, X.G., Zhao, Q.
Tropical Biomedicine 2015;32(3):563-567
In the present study, serum samples from 402 sheep and 216 goats were collected
from 5 counties in Jinzhou from August to October 2012 and antibodies to Toxoplasma gondii
were detected by modified agglutination test (MAT). Overall, 104 (16.8%) had antibodies to T.
gondii with antibody titres of 1:25 to 1:800. Seropositive samples were distributed in all the
5 counties and seroprevalences of T. gondii varied significantly with flock size, age and
rearing system, but not with breed, gender and farm location. The seroprevalences in small
farms (18.3%, 95/518, 95% confidence interval [CI], 15.0-21.7%) were statistically higher than
that in large farms (9%, 9/100, 95% CI, 3.4-14.6%) (P < 0.05), older animals were statistically
higher than that in younger animals (P < 0.01). The prevalence in extensively and semiintensively
raised samples was statistically higher than that in intensively raised animals (P
< 0.01). Small flock size and extensive rearing system are the potential risk factors for the
prevalence of Toxoplasma infection in sheep and goats in Jinzhou. This is the first report of
T. gondii infection in sheep and goats in Jinzhou, northeastern China, and of an association of
seropositivity to T. gondii and the risk factors.
3.Using the sequenced sample cluster analysis to study the body mass index distribution characteristics of adults in different age groups and genders.
Y N CAI ; X T PEI ; P P SUN ; Y P XU ; L LIU ; Z G PING
Chinese Journal of Epidemiology 2018;39(6):821-825
Objective: To explore the characteristics of distribution on Chinese adult body mass index (BMI) in different age groups and genders and to provide reference related to obesity and related chronic diseases. Methods: Data from the China Health and Nutrition Survey in 2009 were used. Sequential sample cluster method was used to analyze the characteristics of BMI distribution in different age groups and genders by SAS. Results: Our results showed that the adult BMI in China should be divided into 3 groups according to their age, as 20 to 40 years old, 40 to 65 years old, and> 65 years old, in females or in total when grouped by difference of 5 years. For groupings in male, the three groups should be as 20 to 40, 40 to 60 years old and>60 years old. There were differences on distribution between the male and female groups. When grouped by difference of 10 years, all of the clusters for male, female and total groups as 20-40, 40-60 and>60 years old, became similar for the three classes, respectively, with no differences of distribution between gender, suggesting that the 5-years grouping was more accurate than the 10-years one, and BMI showing gender differences. Conclusions: BMI of the Chinese adults should be divided into 3 categories according to the characteristics of their age. Our results showed that BMI was increasing with age in youths and adolescents, remained unchanged in the middle-aged but decreasing in the elderly.
Adolescent
;
Adult
;
Age Distribution
;
Aged
;
Asian People/statistics & numerical data*
;
Body Mass Index
;
China/epidemiology*
;
Female
;
Humans
;
Male
;
Middle Aged
;
Nutrition Surveys
;
Obesity/ethnology*
;
Sex Distribution
;
Sex Factors
;
Young Adult
4.Updated interpretation of 2024 ESC guidelines for the management of atrial fibrillation: Surgical management of atrial fibrillation
Qiyue XU ; Yiren SUN ; Yongjun QIAN
Chinese Journal of Clinical Thoracic and Cardiovascular Surgery 2025;32(01):24-30
The European Society of Cardiology (ESC) and the European Association for Cardio-Thoracic Surgery (EACTS) have recently updated and published the 2024 ESC guidelines for the management of atrial fibrillation. Based on the latest evidences, the guidelines have been updated in many aspects, such as diagnostic criteria for atrial fibrillation, AF-CARE treatment principles, comorbidities and risk factor management. In particular, there are significant changes in the recommendations for surgical management of atrial fibrillation in the guidelines. Therefore, this paper aims to interpret the content updates of the guidelines in AF-CARE treatment principles, diagnostic criteria and surgical treatment of atrial fibrillation, especially highlighting the updates and new suggestions about surgical treatment of atrial fibrillation.
5.Associations between milk intake at breakfast and nutritional status of students attending the Nutrition Improvement Program for Rural Compulsory Education Students in 2016.
X F ZHANG ; L LI ; J XU ; P P XU ; H PAN ; W CAO ; Q GAN ; Q ZHANG
Chinese Journal of Epidemiology 2019;40(2):175-179
Objective: To investigate the association between milk intake at breakfast and nutritional status of students attending the Nutrition Improvement Program for Rural Compulsory Education Students (NIPRCES) in 2016, and to provide basic data for improving the nutritional status of the poor rural pupils. Methods: Using the multi-stage stratified random cluster sampling method, 22 315 students from grade three to nine from primary and junior high schools were randomly selected from the 50 key counties under the monitor programs, in 22 provinces of NNIPRCS. Questionnaire was used. Among all the students, with equal number of genders, morning fasting height and weight were measured by trained investigators. Status of nutrition was classified as malnutrition, normal, overweight/obesity, by age-specific height and BMI. Multivariate linear and logistic regression methods were used to analyze the relationship between milk consumption and the status of nutrition of the students. Results: Only 31.4% of the students that were on the monitoring programs would drink milk at breakfast. Proportions of milk intake at breakfast were higher in students from the western regions, in lower grades and in girls (P<0.05). The proportions of malnutrition and overweight/obesity were 11.0% and 10.0% respectively. After controlling factors as gender, age, ethnicity, region of residency and types of parental employment, students who drank milk at breakfast showed an average height of 0.4 cm taller than those who did not drink milk (P=0.001). However, no significant relationships were noticed between milk intake at breakfast and weight, malnutrition or overweight/obesity. Conclusion: Milk intake at breakfast seemed associated with the height of the students under study, suggesting that this program can be promoted, especially in students from the poor rural areas.
Animals
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Breakfast
;
Feeding Behavior
;
Female
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Humans
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Male
;
Milk
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Nutritional Status
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Overweight
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Poverty Areas
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Rural Population
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Schools
;
Students
6.Relationship between the HBsAg-positive infection status of mothers and the non/low-response to hepatitis B vaccine of their infants.
Z Q YANG ; H Y HAO ; X H SHI ; Z D FU ; F ZHANG ; X F WANG ; X X XU ; B WANG ; H X WEN ; S Y FENG ; B WANG ; S P WANG
Chinese Journal of Epidemiology 2018;39(6):805-809
Objective: To explore the relationship between the status of HBsAg-positive infection of mothers and the non/low-response to hepatitis B vaccine of their infants. Methods: A total of 225 pairs of mothers and their infants were recruited in our cohort from June 2011 to July 2013. Infants were given three doses of hepatitis B vaccine at hour 24, first month and month 6(t)h respectively and were followed up for one year after birth. HBV serological markers and HBV DNA in the peripheral blood of both mothers and infants were detected by Electro-chemiluminescence immunoassay and fluorescence quantitative Polymerase Chain Reaction. Results: Six HBV infection models were detected in HBsAg-positive mothers, and "HBsAg (+), HBeAg (+), anti-HBc (+)" (model one) and "HBsAg (+), anti-HBe (+), anti-HBc (+)" (model two) accounted for 92.5%(208/225) of all the models. Rate of non/low-response to hepatitis B vaccine in infants born to mothers in model one was lower than those in model two, the differences are statistically significant (χ(2)=4.80, P=0.029). The rate of non/low-response to hepatitis B vaccine in infants showed a downward trend with the rising of HBeAg level in their mothers (χ(2)=4.86, P=0.028). Results from the unconditional logistic regression analysis showed that the HBeAg of the HBsAg-positive mothers was significantly correlated with the low risk of non/low-response to hepatitis B vaccine in infants (OR=0.598, 95%CI: 0.378-0.947). The positive rate of serum HBV DNA in HBsAg-positive mothers was 54.2%, while the rate of non/low-response to hepatitis B vaccine in infants born to HBV DNA positive mothers was similar to those infants born to HBV DNA negative mothers (χ(2)=0.22, P=0.640). Conclusions: "HBsAg (+), HBeAg (+), anti-HBc (+)" and "HBsAg (+), anti-HBe(+), anti-HBc (+)" were the common models seen in HBsAg-positive mothers, and the rate of non/low-response to hepatitis B vaccine was different between the two models. HBeAg of HBsAg-positive mothers might have positive effects on the immune response to hepatitis B vaccine in infants but the mechanisms remained not clear. HBV DNA of the HBsAg-positive mothers did not seem to be correlated with the immune response to hepatitis B vaccine in infants.
Adult
;
Biomarkers/blood*
;
DNA, Viral/blood*
;
Diagnostic Tests, Routine
;
Female
;
Hepatitis B/prevention & control*
;
Hepatitis B Antibodies/blood*
;
Hepatitis B Surface Antigens/blood*
;
Hepatitis B Vaccines/pharmacology*
;
Hepatitis B e Antigens/blood*
;
Hepatitis B virus/isolation & purification*
;
Humans
;
Infant
;
Infectious Disease Transmission, Vertical/prevention & control*
;
Mothers
;
Pregnancy
;
Pregnancy Complications, Infectious/virology*
7.Stratified sampling survey of major human parasitic diseases in Henan province.
B L XU ; H W ZHANG ; Y DENG ; Z L CHEN ; W Q CHEN ; D L LU ; Y L ZHANG ; Y L ZHAO ; X M LIN ; Q HUANG ; C Y YANG ; Y LIU ; R M ZHOU ; P LI ; J S CHEN ; L J HE ; D QIAN
Chinese Journal of Epidemiology 2018;39(3):322-328
Objective: To understand the prevalence of major human parasitic diseases and related factors in Henan province. Methods: This stratified sampling survey was carried out according to the requirement of national survey protocol of major human parasitic diseases, 2014-2015. The prevalence of soil-transmitted helminths infection, taeniasis and intestinal protozoiasis were surveyed in 104 sites selected from 35 counties (districts) and the prevalence of clonorchiasis was surveyed in 62 sites selected from 37 townships. In each survey spot, 250 persons were surveyed. A total of 26 866 persons and 15 893 persons were surveyed. Modified Kato-Katz thick smear was used to detect the eggs of intestinal helminthes. Tube fecal culture was used to identify the species of hookworm. The Enterobius eggs were detected in children aged 3 to 6 years by using adhesive tape. The cyst and trophozoite of intestinal protozoa were examined with physiological saline direct smear method and iodine stain method. Results: The overall infestation rate of intestinal parasites was2.02% in Henan, and the worm infection rate was higher than protozoa infection rate. Fourteen kinds of intestinal parasites were found, including nematode (5 species), trematode (2 species), and protozoan (7 species). The infection rate of Enterobius vermicularis was highest, and Qinba Mountain ecological area had the highest infestation rate of intestinal parasites in 4 ecological areas of Henan. There was no significant difference in intestinal parasite infection rate between males and females (χ(2)=3.630, P=0.057), and the differences in intestinal parasite infection rate among different age groups had significance (χ(2)=124.783, P=0.000 1). The infection rate reached the peak in age group ≤9 years and the major parasite was Enterobius vermicularis. Furthermore the overall human infection rate of parasite showed a downward trend with the increase of educational level of the people (χ(2)=70.969, P=0.000 1), the differences had significance (χ(2)=120.118, P=0.000 1). For different populations, the infection rate of intestinal parasites was highest among preschool children. The infection of intestinal helminth was mainly mild, only 2 severe cases were detected. The infection rate of Clonorchis sinensis in urban residents was only 0.006%. Logistic regression analysis showed that being preschool children (χ(2)=15.765, P=0.000 1) and drinking well water (χ(2)=45.589, P=0.000 1) were the risk factors for intestinal parasite infection, and annual income per capita of farmers was the protective factor against intestinal parasite infection. The infection rates of protozoa and intestinal parasites decreased sharply compared with the results of previous two surveys, and the rate of intestinal helminth infection also dropped sharply compared with the second survey. The numbers of protozoa, helminth and intestinal parasites detected in this survey were all less than the numbers found in the previous two surveys. Conclusions: Compared the results of three surveys in Henan, the infection rate of protozoa and intestinal parasites showed a downward trend. The prevention and treatment of Enterobius vermicularis infection in children should be the key point of parasitic disease control in the future.
Animals
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Child
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Child, Preschool
;
Clonorchiasis/epidemiology*
;
Farmers
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Feces/parasitology*
;
Female
;
Helminthiasis/epidemiology*
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Helminths
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Humans
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Intestinal Diseases, Parasitic/parasitology*
;
Male
;
Prevalence
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Protective Factors
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Risk Factors
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Rural Population
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Soil Microbiology
;
Surveys and Questionnaires
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Taeniasis/epidemiology*
;
Trematode Infections/parasitology*
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Urban Population
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Water Wells
9.Global genetic diversity of Spirometra tapeworms
Hong, X. ; Liu, S.N. ; Xu, F.F. ; Han, L.L. ; Jiang, P. ; Wang, Z.Q. ; Cui, J. ; Zhang, X.
Tropical Biomedicine 2020;37(No.1):237-250
Spirometra larvae are etiological agents of human sparganosis. However, the systematics of spirometrid cestodes has long been controversial. In order to determine the current knowledge on the evolution and genetic structure of Spirometra, an exhaustive population diversity analysis of spirometrid cestodes using the mitochondrial gene: cytochrome c oxidase subunit 1 (cox1) was performed. All publicly available cox1 sequences available in the GenBank and 127 new sequencing genes from China were used as the dataset. The haplotype identify, network, genetic differentiation and phylogenetic analysis were conducted successively. A total of 488 sequences from 20 host species, representing four spirometrid tapeworms (S. decipiens, S. ranarum, S. erinaceieuropaei and Sparganum proliferum) and several unclassified American and African isolates from 113 geographical locations in 17 countries, identified 45 haplotypes. The genetic analysis revealed that there are four clades of spirometrid cestodes: Clade 1 (Brazil + USA) and Clade 2 (Argentina + Venezuela) included isolates from America, Clade 3 contained African isolates and one Korean sample, and the remainders from Asia and Australia belonged to Clade 4; unclassified Spirometra from America and Africa should be considered the separate species within the genus; and the taxonomy of two Korea isolates (S. erinaceieuropaei KJ599680 and S. decipiens KJ599679) was still ambiguous and needs to be further identified. In addition, the demographical analyses supported population expansion for the total spirometrid population. In summary, four lineages were found in the spirometrid tapeworm, and further investigation with deeper sampling is needed to elucidate the population structure.
10.Seasonal distribution of patient hospitalization due to asthma exacerbation in 7 geographic areas in China.
J T LIN ; B XING ; H P TANG ; L YANG ; Y D YUAN ; Y H GU ; P CHEN ; X J LIU ; J ZHANG ; H G LIU ; C Z WANG ; W ZHOU ; D J SUN ; Y Q CHEN ; Z C CHEN ; M HUANG ; Q C LIN ; C P HU ; X H YANG ; J M HUO ; X W YE ; X ZHOU ; P JIANG ; W ZHANG ; Y J HUANG ; L M DAI ; R Y LIU ; S X CAI ; J Y XU ; J Y ZHOU
Chinese Journal of Epidemiology 2018;39(11):1477-1481
Objective: To understand the seasonal distribution of patient hospitalization due to asthma exacerbation in 7 geographic areas in China. Methods: This was a retrospective study which involved patients hospitalized for asthma exacerbation in 29 hospitals throughout 7 geographic areas in the mainland of China (northeast, north, central, east, south, northwest and southwest). The numbers of asthmatic patients and total inpatients of the respiratory department of each hospital were recorded. The monthly ratio of asthmatic patients to the total inpatients in every area was calculated and compared. Results: During the study period, 6 480 patients were admitted for asthma exacerbation, accounting for 3.14% of all the 206 135 patients admitted to the respiratory departments in the 29 hospitals. The ratio of asthmatic patients to total inpatients in the northeast area (5.61%) was highest, and the ratio in east area was lowest (1.97%). Statistical analysis showed that the difference among different areas was significant (P<0.000 1). In most areas, both the number and proportion of hospitalized asthmatic patients peaked in spring (February-April) and autumn (September-October). In the northeast area, east area and south area, the peaks in spring were more obvious, while in the north area and southwest area, the peaks in autumn were more obvious. In the northwest area the peaks occurred in winter (December-January) and summer (June-August), respectively. The differences in hospitalization due to asthma among different months were significant in the northeast, north, and southwest areas (P<0.005). Conclusion: The number of patients hospitalized for asthma exacerbation fluctuated with season in different areas in China. In most areas, more asthmatic patients were admitted to hospitals in spring and autumn.
Asthma
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China/epidemiology*
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Hospitalization/statistics & numerical data*
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Humans
;
Retrospective Studies
;
Seasons