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2024 Vol. 6, No. 18

Preplanned Studies
Epidemiological Insights into Foodborne Pathogens Through qPCR Exploration of Prevalence — Beijing Municipality, China, January 2022–April 2023
Penghang Zhang, Xiaochen Ma, Yuzhu Liu, Tongyu Wang, Shuning Huo, Xiaoai Zhang
2024, 6(18): 385-389. doi: 10.46234/ccdcw2024.075
Abstract(4400) HTML (94) PDF 412KB(22)
Abstract:
What is already known on this topic?

Foodborne diseases present a substantial global health risk. Traditional diagnostic methods have constraints, but advancements in molecular techniques, like quantitative polymerase chain reaction (qPCR), provide a hopeful solution.

What is added by this report?

We examined 1,011 stool samples from individuals suspected of foodborne illnesses. Our analysis indicated a significant presence of Clostridium perfringens, Salmonella enterica, enterotoxigenic Escherichia coli (ETEC), and adenovirus. Notably, co-infections were identified in 71.22% of the samples.

What are the implications for public health practice?

The data emphasize a notable prevalence of co-infections, highlighting the complexity of foodborne illnesses. This study underscores the significance of utilizing contemporary diagnostic methods in densely populated urban areas such as Beijing Municipality.

Trends and Age-Period-Cohort Effect on Incidence of Varicella Under Age 35 — China, 2005–2021
Guijie Luan, Hongyan Yao, Dapeng Yin, Jianjun Liu
2024, 6(18): 390-395. doi: 10.46234/ccdcw2024.076
Abstract(5072) HTML (87) PDF 360KB(27)
Abstract:
What is already known about this topic?

Varicella is an acute respiratory infectious disease primarily affecting children. However, recent studies have indicated an increasing susceptibility to varicella among older age groups.

What is added by this report?

The findings demonstrate a significant rise in the incidence rate among individuals aged 15–19. Males under 20 years old were found to have a higher risk compared to females, whereas males had a lower risk compared to females aged 20–35 years.

What are the implications for public health practice?

This study is the first comparative analysis using varicella data reported between 2005 and 2021 to examine the contributions of age, period, and birth cohort to varicella incidence in China. This study aims to provide a comprehensive analysis of the epidemiological characteristics of varicella in China and identify high-risk groups. The results of this study will contribute valuable information for the development of varicella prevention policies.

Salmonella Grumpensis Causing Diarrhea in Children — Shanghai Municipality, China, 2023
Yue Liu, Xuebin Xu, Wenqin Wang, Wenjia Xiao, Yi Hu, Xin Chen, Min Chen
2024, 6(18): 396-400. doi: 10.46234/ccdcw2024.077
Abstract(4145) HTML (89) PDF 998KB(12)
Abstract:
What is already known about this topic?

Foodborne diseases are a growing public health concern with a notable disease burden in China.

What is added by this report?

Two children with diarrhea visited a healthcare facility within 24 hours on August 1 and 2, 2023. Salmonella Grumpensis was detected in their stool samples by the public health laboratory. Whole genome sequencing (WGS) analysis revealed characteristics typical of outbreak strains. Although the origin of the outbreak was unknown, the possibility of a hidden shared infection was deemed feasible.

What are the implications for public health practice?

It underscores the importance of thorough genomic surveillance to promptly detect emerging pathogens. Public health laboratories play a crucial role by utilizing advanced genomic technologies for accurate pathogen identification and timely warning systems.

Vital Surveillances
Trends in Fruit and Vegetable Intake Among the Labor Force Population — China, 2010–2018
Lan Wang, Mei Zhang, Xiao Zhang, Zhenping Zhao, Chun Li, Mengting Yu, Taotao Xue, Feng Tan, Limin Wang
2024, 6(18): 401-407. doi: 10.46234/ccdcw2024.078
Abstract(4452) HTML (93) PDF 335KB(12)
Abstract:
Introduction

This research investigates trends pertaining to the prevalence of low fruit and vegetable consumption among the labor force population in China. The study considered data derived from four nationally representative cross-sectional surveys.

Methods

The data under review for this study was derived from the China Chronic Disease and Risk Factor Surveillance (CCDRFS) carried out in 2010, 2013, 2015, and 2018, correspondingly. We utilized a food frequency questionnaire to evaluate the quantity and frequency of fruit and vegetable consumption. The estimated prevalence of low fruit and vegetable consumption was calculated for each survey, while considering factors such as sex, age, location, and socioeconomic status (SES). Participants’ SES was ascertained via latent class analysis, serving to identify distinct classes based on criteria such as education, occupation, and household income per capita. Logistic regression was deployed to determine the statistical significance of trends.

Results

From 2010 to 2018, there was a notable increase in the average daily consumption of vegetables and fruits among the working population, rising from 418.6 g/day to 491.8 g/day (P<0.01 for trend). During the same period, the prevalence of low fruit and vegetable intake declined from 51.1% to 43.5% [P<0.001 for trend; −1.6% average annual percent change (AAPC)]. This downward trend was prevalent across genders, however, certain subgroups of adults (e.g., those living in rural areas or those of low SES) saw stable consumption levels throughout this period (P>0.05 for trend).

Conclusion

Over the past nine years, there has been a notable decline in the prevalence of low fruit and vegetable consumption among the labor force population in China. Moreover, the comparatively deficient intake of fruits and vegetables evident among individuals of lower SES warrants further attention.

Methods and Applications
Construction of Prediction Model of Foodborne Disease Outbreaks and Its Trend Prediction — Guizhou Province, China, 2023–2025
Li Zhang, Sufang Xiong, Shu Zhu, Jigui Tian, Qingyuan Chen, Xiaobo Luo, Hua Guo
2024, 6(18): 408-412. doi: 10.46234/ccdcw2024.079
Abstract(4026) HTML (81) PDF 674KB(27)
Abstract:
Objective

Foodborne diseases pose a significant public health concern globally. This study aims to analyze the correlation between disease prevalence and climatic conditions, forecast the pattern of foodborne disease outbreaks, and offer insights for effective prevention and control strategies and optimizing health resource allocation policies in Guizhou Province.

Methods

This study utilized the χ2 test and four comprehensive prediction models to analyze foodborne disease outbreaks recorded in the Guizhou Foodborne Disease Outbreak system between 2012 and 2022. The best-performing model was chosen to forecast the trend of foodborne disease outbreaks in Guizhou Province, 2023–2025.

Results

Significant variations were observed in the incidence of foodborne disease outbreaks in Guizhou Province concerning various meteorological factors (all P≤0.05). Among all models, the SARIMA-ARIMAX combined model demonstrated the most accurate predictive performance (RMSE: Prophet model=67.645, SARIMA model=3.953, ARIMAX model=26.544, SARIMA-ARIMAX model=26.196; MAPE: Prophet model=42.357%, SARIMA model=37.740%, ARIMAX model=15.289%, SARIMA-ARIMAX model=13.961%).

Conclusion

The analysis indicates that foodborne disease outbreaks in Guizhou Province demonstrate distinct seasonal patterns. It is recommended to concentrate prevention efforts during peak periods. The SARIMA-ARIMAX hybrid model enhances the precision of monthly forecasts for foodborne disease outbreaks, offering valuable insights for future prevention and control strategies.