Epidemiological characteristics and environmental contamination of monkeypox in Beijing's Chaoyang district: Field evidence from 2023 to 2024

IF 4.7 3区医学 Q1 INFECTIOUS DISEASES

Travel Medicine and Infectious Disease Pub Date : 2025-09-01 DOI:10.1016/j.tmaid.2025.102896

Chenming Huang , Yunkang Zhao , Baihui Han , Ye Zhang , Huan Zhang , Xin Zhao , Zeyu Zhao , Ke Wu , Yang Lin , Dingyan Zhang , Fanglei Zhang , Han Meng , Jiaqi Wang , Tianmu Chen , Xiao Qi

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引用次数: 0

Abstract

Objectives

The mpox outbreak in Beijing's Chaoyang District after late May 2023, this study aims to evaluate the epidemiological characteristics and environmental contamination of this outbreak.

Methods

A field investigation was conducted to evaluate the epidemiological characteristics of mpox cases and their living environments in Chaoyang District, Beijing, between May 2023 and May 2024. Laboratory testing, epidemiological description, and statistical analysis were conducted subsequently.

Results

The outbreak resulted in 43 non-fatal cases, 97.67 % were Men who have Sex with Men (MSM) and symptomatic, tracking a peak in August 2023 and declining thereafter. Travel history was reported in 27.91 % (12 of 43), and coinfections with both HIV and syphilis were among 16.28 % of mpox cases. MPXV-positive rates were 97.67 % for rash swabs, 55.81 % for throat swabs, and 59.38 % for environmental samples. Median cycle threshold (Ct) values were 20.45 (IQR: 4.57) for rash swabs, 31.59 (IQR: 5.64) for throat swabs, and 33.33 (IQR: 4.37) for environmental samples. Contact tracing revealed a 9.09 % prevalence among close contacts and a secondary attack rate of 10.26 %. High environmental contamination was found in bedrooms and items such as electronics and cups.

Conclusions

The mpox outbreak in Beijing's Chaoyang District predominantly affected MSM, that transmitted through diverse transmission routes. Environmental contamination in long-lived rooms or used items highlights the importance of targeted hygiene measures.

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北京市朝阳区猴痘流行病学特征及环境污染：2023 - 2024年现场证据

目的对北京市朝阳区于2023年5月下旬发生的麻疹疫情进行流行病学特征和环境污染评价。方法对2023年5月至2024年5月北京市朝阳区麻疹病例的流行病学特征及其生活环境进行实地调查。随后进行了实验室检测、流行病学描述和统计分析。结果本次疫情共发生43例非死亡病例，97.67%为男男性行为者（MSM），有症状者，发病高峰在2023年8月，之后呈下降趋势。有旅行史的占27.91%(12 / 43)，同时感染HIV和梅毒的占16.28%。皮疹拭子mpxv阳性率为97.67%，咽拭子阳性率为55.81%，环境标本阳性率为59.38%。皮疹拭子的中位周期阈值（Ct）为20.45 (IQR: 4.57)，咽拭子的中位周期阈值为31.59 (IQR: 5.64)，环境样本的中位周期阈值为33.33 （IQR: 4.37）。接触者追踪显示，密切接触者患病率为9.09%，二次发病率为10.26%。在卧室和电子产品、杯子等物品中发现了高度的环境污染。结论北京市朝阳区麻疹疫情以男男性接触者为主，传播途径多样。长期使用的房间或使用过的物品的环境污染突出了有针对性的卫生措施的重要性。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Travel Medicine and Infectious Disease PUBLIC, ENVIRONMENTAL & OCCUPATIONAL HEALTH-INFECTIOUS DISEASES

CiteScore

19.40

自引率

1.70%

发文量

211

审稿时长

49 days

期刊介绍： Travel Medicine and Infectious Disease Publication Scope: Publishes original papers, reviews, and consensus papers Primary theme: infectious disease in the context of travel medicine Focus Areas: Epidemiology and surveillance of travel-related illness Prevention and treatment of travel-associated infections Malaria prevention and treatment Travellers' diarrhoea Infections associated with mass gatherings Migration-related infections Vaccines and vaccine-preventable disease Global policy/regulations for disease prevention and control Practical clinical issues for travel and tropical medicine practitioners Coverage: Addresses areas of controversy and debate in travel medicine Aims to inform guidelines and policy pertinent to travel medicine and the prevention of infectious disease Publication Features: Offers a fast peer-review process Provides early online publication of accepted manuscripts Aims to publish cutting-edge papers