北京疾控：目前北京市偶有基孔肯雅热境外输入病例

Core Viewpoint - The article emphasizes the importance of awareness and preventive measures against Chikungunya fever, a mosquito-borne disease that poses a risk due to increasing international travel and occasional imported cases in urban areas [1]. Group 1: Disease Overview - Chikungunya fever is an acute mosquito-borne infectious disease caused by the Chikungunya virus, primarily prevalent in Southeast Asia, South Asia, and Africa [1]. - The disease is transmitted through bites from infected mosquitoes, specifically Aedes mosquitoes, with no evidence of human-to-human transmission [1][3]. - The virus can lead to persistent immunity after infection, making the general population susceptible to the disease [4]. Group 2: Transmission and Symptoms - The main transmission route is through bites from infected mosquitoes, with a typical incubation period of 1 to 12 days, most commonly 3 to 7 days [3]. - Clinical symptoms include sudden high fever (over 39°C), symmetrical polyarthralgia, and rash, with mild cases being predominant [6]. - High-risk groups, such as infants, elderly individuals over 65, and those with underlying health conditions, may experience severe symptoms [6]. Group 3: Geographic Spread - Chikungunya fever has been reported in 119 countries across Africa, the Americas, Asia, Europe, and various islands in the Indian and Pacific Oceans [5]. - Since 2010, China has reported imported cases from Southeast Asia, Africa, and Central Asia, with local transmission occurring in regions like Guangdong [5]. Group 4: Prevention Measures - The best prevention method is to avoid mosquito bites, which includes eliminating mosquito breeding sites and using biological, physical, and chemical methods to control mosquito populations [8]. - Specific recommendations for the public include wearing long clothing, avoiding mosquito breeding areas, and using mosquito repellents effectively [8]. Group 5: Travel Precautions - Travelers should check health advisories for their destination to understand the risk of Chikungunya outbreaks and plan accordingly [9]. - It is advised to carry effective mosquito repellents and use protective measures such as mosquito nets and appropriate clothing when traveling to areas with heightened infection risk [9]. - Post-travel, individuals should monitor their health for two weeks and seek medical attention if symptoms arise, providing details of their travel [9].