Advanced Search

2024 Vol. 6, No. 27

Preplanned Studies
Trends in Incidence of HIV and Syphilis Among Men Who Have Sex with Men — Tianjin Municipality, China, 2013–2022
Yan Guo, Fangfang Chen, Hui Gong, Ziming Wu, Xinying Zhang, Tielin Ning, Zhongquan Liu, Jianyun Bai, Long Li, Jie Yang, Fangning Zhao, Jinyu Hou, Maohe Yu, Houlin Tang
2024, 6(27): 651-657. doi: 10.46234/ccdcw2024.121
Abstract(4446) HTML (84) PDF 1677KB(37)
Abstract:
What is already known about this topic?

Given the common modes of transmission, outbreaks of both human immunodeficiency virus (HIV) and syphilis are primarily observed in men who have sex with men (MSM). However, minimal research has been conducted to concurrently evaluate the rates and trends of HIV and syphilis incidence within this community in China.

What is added by this report?

This manuscript presents the incidence rates and associated factors of HIV and syphilis in MSM in Tianjin based on data derived from a decade-long cohort study. Intriguingly, it depicts a decreasing trend in HIV incidence juxtaposed with an increasing incidence of syphilis among this population in Tianjin.

What are the implications for public health practice?

The interconnected risk factors for HIV and syphilis pose significant hindrances to disease control. Our study underscores the urgent need for improved intervention strategies specifically aimed at MSM to mitigate the propagation of both infections.

Effectiveness of Frequent Viral Load Testing Plus Additional Interventions to Prevent HIV Transmission in Heterosexual, Serodiscordant Couples — Yunnan Province, China, 2019–2021
Jing Han, Jian Li, Yuhua Shi, Chunpeng Zang, Zhimin Yang, Yu Han, Yanling Ma, Qiongli Duan, Yuhua Hu, Zikuang Bai, Cuiyun Yang, Gabriella Bulloch, Yurong Mao, Houlin Tang, Zunyou Wu, Yufen Liu
2024, 6(27): 658-664. doi: 10.46234/ccdcw2024.122
Abstract(3768) HTML (83) PDF 443KB(15)
Abstract:
What is already known about this topic?

HIV transmission among serodiscordant couples remains a persistent issue in China. However, the practice of combining counseling with antiretroviral therapies (ART) to enhance ART adherence is not widely implemented or recommended in Chinese health guidelines.

What is added by this report?

This randomized controlled trial suggests that increased follow-up, counseling, and awareness of HIV risk can enhance ART compliance, thereby maximizing treatment efficacy.

What are the implications for public health practice?

Early testing and counseling of serodiscordant couples, following the identification of a human immunodeficiency virus (HIV) positive spouse, is crucial for initiating ART and reducing the risk of seroconversion in the uninfected partner. Implementing a combination of ART and adjunct counseling in China is advisable.

Vital Surveillances
The Epidemiological Characteristics and Spatiotemporal Clustering of Measles — China, 2005–2022
Qianqian Liu, Jiuhong Li, Siyu Liu, Lin Tang, Xiaoqi Wang, Aodi Huang, Xia Xu, Yuexin Xiu, Hong Yang, Ning Wen, Lance Rodewald, Fuzhen Wang, Zundong Yin
2024, 6(27): 665-669. doi: 10.46234/ccdcw2024.123
Abstract(4485) HTML (83) PDF 271KB(19)
Abstract:
Introduction

In recent years, the incidence of measles in China has consistently remained below 1 per 100,000 population, yet the disease has not been eliminated. This study aims to comprehensively analyze the epidemiological characteristics of measles from 2005 to 2022, identify high-risk populations and areas, and propose targeted interventions.

Methods

We utilized data from the China Disease Prevention and Control Information System for our comprehensive analysis. Spatial autocorrelation was employed to examine the spatial clustering of measles, while spatiotemporal scanning analysis was used to detect spatiotemporal clustering to describe measles epidemiology during the study period.

Results

Between 2005 and 2022, 732,218 measles cases were reported in China. Overall, the incidence of measles exhibited a downward trend, particularly during the periods of 2008–2011 and 2015–2022. In 2022, the incidence rate reached its historical low at 0.039 per 100,000 population. Measles predominantly affects young children. Since 2017, global spatial clustering has diminished, although hotspot areas persist in the western provinces. Spatial-temporal scanning identified a high-incidence cluster from 2005 to 2008, comprising 15 provinces in the western, central, and northern regions of China. Conversely, from 2016 to 2022, a low-incidence cluster was detected in the southern and central provinces.

Conclusions

China has made significant progress in measles prevention and control. The recent low incidence and absence of substantial spatiotemporal clustering indicate that China is nearing measles elimination. However, there is a continuing need to enhance prevention and control efforts among very young children and in historic incidence hotspots in western provinces. Additionally, improving the diagnosis of vaccine-associated rash illnesses is essential.

Methods and Applications
A New Integrated Interpolation Method for High Missing Unstable Disease Surveillance Data — 12 Urban Agglomerations, China, 2009–2020
Yuanhao Shi, Yilan Liao
2024, 6(27): 670-676. doi: 10.46234/ccdcw2024.124
Abstract(3485) HTML (80) PDF 5134KB(10)
Abstract:
Introduction

The prevalence of unstable and incomplete monitoring data significantly complicates syndromic analysis. Many data interpolation methods currently available demonstrate inadequate effectiveness in overcoming this issue.

Methods

To improve the accuracy of interpolation, we propose the integration of the SHapley Additive exPlanation model (SHAP) with the structural equation model (SEM), forming a combined SHAP-SEM approach. A case study is then performed to assess the enhanced performance of this novel model compared to traditional methods.

Results

The SHAP-SEM model was utilized to develop an interpolation model employing data from the Chinese respiratory syndrome surveillance database. We executed three distinct experiments to establish the model datasets, comprising a total of 100 replicates. The performance of the model was evaluated using the root mean square error (RMSE), correlation coefficient (r), and F-score. The findings demonstrate that the SHAP-SEM model consistently achieves superior accuracy in data interpolation, which is evident across different seasons and in overall performance.

Discussion

We conclude that the SHAP-SEM model demonstrates an exceptional capacity for accurately interpolating volatile and incomplete data. This capability is crucial for developing a comprehensive database that is essential for conducting risk assessments related to syndromes.

Outbreak Reports
A Case of Brucellosis Concomitant with Severe Fever with Thrombocytopenia Syndrome — Weifang City, Shandong Province, China, 2023
Qingqing Xu, Cuiping Wu, Hui Liu, Chao Geng, Jinhui Zhang, Dongri Piao, Hongyan Zhao, Yu Fan, Guozhong Tian, Hai Jiang
2024, 6(27): 677-680. doi: 10.46234/ccdcw2024.125
Abstract(3901) HTML (76) PDF 224KB(38)
Abstract:
What is already known about this topic?

Brucellosis and severe fever with thrombocytopenia syndrome (SFTS) are neglected zoonoses, attributable respectively to Brucella and the SFTS virus (SFTSV). While the incidence of these diseases has been rising, instances of co-infection remain uncommon.

What is added by this report?

This represents the first documented case of a rare coinfection involving Brucella and SFTSV. We carried out an epidemiological analysis of patients diagnosed with brucellosis and those with SFTS at Yidu Central Hospital of Weifang. Our findings demonstrate a temporal and spatial overlap among the affected individuals.

What are the implications for public health practice?

Our findings suggest that co-infections arising from the spatiotemporal overlap of Brucella and SFTSV are plausible, necessitating heightened awareness and enhanced diagnostic measures.