Core Viewpoint - The article highlights the increasing risk of dengue fever and chikungunya in Guangzhou due to rising temperatures and increased rainfall, prompting the local health authority to announce designated hospitals for treatment and preventive measures against mosquito breeding [1]. Summary by Sections Designated Hospitals - A total of 13 hospitals have been designated for the treatment of dengue fever and chikungunya in Guangzhou, including institutions such as Guangzhou Medical University Affiliated Eighth Hospital and Guangdong Second People's Hospital, covering 11 districts in the city [1]. Preventive Measures - The Guangzhou Public Health Committee has issued a public initiative to combat the spread of these diseases, emphasizing the importance of eliminating stagnant water and controlling mosquito populations as key preventive strategies [1].

Group 1 - The recent outbreak of Chikungunya fever in some southern cities of China has raised public concern due to the rapid reproduction of mosquitoes in hot and rainy weather [1][7] - Chikungunya fever is transmitted by Aedes mosquitoes, similar to Dengue fever, with a shorter incubation period and faster transmission rate, being two to three times quicker than Dengue [5][3] - Symptoms of Chikungunya include significant pain in small joints, particularly in the wrists, and can lead to long-term complications in vulnerable populations [5][4] Group 2 - Key preventive measures against Chikungunya include mosquito control, such as eliminating standing water and personal protection against bites [7][8] - Environmental mosquito control involves clearing stagnant water from containers, maintaining cleanliness in water-holding areas, and managing waste to prevent breeding [8][10] - Personal protective measures include using screens, mosquito nets, and repellents, especially during peak mosquito activity times [11][12] Group 3 - Travelers to areas with Chikungunya outbreaks should monitor their health for 12 days after returning and seek medical attention if symptoms arise [13][14] - Immediate medical consultation is advised for individuals experiencing fever, joint or muscle pain, or rashes, especially if they have a history of travel to affected regions [14]

21世纪经济报道记者李佳英 广州报道 7月21日深夜，广东省疾病预防控制中心发布"致市民朋友的倡议书"，倡议书表示，广东近期蚊虫已进 入快速繁殖期，广东省已发生基孔肯雅热疫情，登革热疫情也进入快速上升期，号召大家清积水、灭成 蚊、防叮咬。 截至7月20日，根据广东佛山市顺德区卫生健康局通报信息，顺德区累计报告基孔肯雅热确诊病例2158 例，主要集中在乐从镇、北滘镇、陈村镇，均为轻症病例。 疫情形势引人关注，基孔肯雅热，这一源自非洲、南亚与东南亚的疾病，其关节疼痛症状尤为突出，甚 至被传"疼得直不起腰"。那么，基孔肯雅热究竟有何特性，关节疼痛情况如何？基孔肯雅热与登革热在 传播途径和症状上有何异同？若出现发热、关节剧痛等疑似症状，应如何科学应对？ 南方医科大学珠江医院感染性疾病科副主任周浩在接受21世纪经济报道记者专访时指出，本次疫情呈现 明显地域聚集性，90%以上病例集中在佛山顺德。而且基孔肯雅热与登革热的传播媒介相同，流行区域 和流行时间相近，临床表现亦类似。尽管报告的基孔肯雅热患者目前以轻症为主，应加强蚊媒控制力度 并做好自我防护，以减少疫情扩散风险。 "疼得直不起腰"是真的吗？ 《21世纪》：广东省此次 ...

Core Viewpoint - The article discusses the outbreak of Chikungunya fever in Shunde District, Guangdong Province, highlighting the confirmed cases, symptoms, and the importance of preventive measures against mosquito-borne diseases [1][4]. Summary by Sections Outbreak Details - As of July 21, 2025, Shunde District reported a total of 2,471 confirmed cases of Chikungunya fever, primarily in Lecong, Beijiao, and Chen Village, with all cases being mild [1]. - The outbreak was traced back to an imported case from a worker returning from abroad, leading to local transmission by mosquitoes [1]. Disease Characteristics - Chikungunya fever is caused by the Chikungunya virus (CHIK-V), primarily transmitted by Aedes mosquitoes, characterized by fever, rash, and severe joint pain [1][3]. - The disease was first identified in Tanzania in 1952, and its name means "to become contorted" in the local language, reflecting the severe pain experienced by patients [4]. Symptoms and Comparison with Dengue Fever - Initial symptoms include sudden high fever and severe joint pain, particularly in small joints, followed by a rash that typically resolves within 3 to 5 days [4]. - Chikungunya fever shares similarities with dengue fever in terms of transmission and symptoms, but has a shorter incubation period and faster spread [4]. Vulnerable Populations - Although current cases are mild, special attention is needed for newborns and individuals over 65, especially those with underlying health conditions like hypertension, diabetes, and heart disease, as they are at higher risk for complications [5]. Transmission and Prevention - The virus does not spread directly between humans; transmission occurs through mosquito bites [6][8]. - Effective prevention strategies include mosquito control measures, such as eliminating standing water and using repellents, as well as personal protective measures like wearing long sleeves and using mosquito nets [8][9]. Travel Advisory - Travelers to regions where Chikungunya and dengue fever are prevalent should monitor local health advisories and take precautions against mosquito bites [9].

夏季气温攀升、降雨量增多，蚊虫活动愈发活跃。中国疾控中心16日发布专门健康提示，提醒公众 夏季蚊媒传染病传播风险显著增加，要警惕登革热和基孔肯雅热，做好清除蚊虫孳生地、防蚊灭蚊等预 防举措。 什么是蚊媒传染病？"小"虫子可能带来哪些"大"麻烦？人类和蚊虫的斗争是否随着气候环境变 化，"打怪升级"？ 不可小看的蚊子—— 使人寒战、贫血的疟疾，使人抽搐、意识障碍的乙脑，使人高烧、全身剧痛、皮疹的登革热……蚊 子虽小，却可能通过叮咬传播多种致命传染病。 新中国成立以来，我国蚊媒传染病发病率、死亡率显著下降，在2021年宣布消除了疟疾。 然而，全球化时代的"蚊虫迁徙"和气候环境发生的剧烈变化给蚊媒传染病防控带来了全新挑战。 世界卫生组织公布数据显示：2024年，全球报告登革热病例数为1400万，创历史新高。 蚊子的跨境流动，使我国亦面临较大"外防输入"压力。昆明海关公布信息显示，云南等边境地区不 仅有跨边境输入的疟疾病例，也有感染性按蚊飞越国境传播的风险。而气候变暖、降水增多等气候变 化，为登革热媒介伊蚊，提供了更加适宜生存的条件。 刘起勇指出，气候、环境、自然灾害、人类的生产生活方式等因素都会影响蚊媒传染病的传播。 ...

Group 1 - The core issue is the outbreak of Chikungunya fever in Shunde District, Foshan City, with a total of 478 confirmed cases reported, all of which are mild cases [1] - Chikungunya fever is an acute infectious disease caused by the Chikungunya virus, primarily transmitted by Aedes mosquitoes, affecting all age groups [2] - Symptoms typically appear within 3-7 days after infection, including high fever that can reach 39°C to 40°C, severe joint pain, and rashes [4][6][7] Group 2 - Chikungunya fever shares similarities with dengue fever, both being transmitted by mosquitoes and presenting with high fever and joint pain, but differs in that Chikungunya has a shorter fever duration and more persistent joint pain [8] - There is currently no specific treatment for Chikungunya fever, making mosquito prevention and control crucial [10] - Preventive measures include eliminating standing water, maintaining cleanliness, and using physical barriers like screens and mosquito nets [11][13][20]

7月11日，国家疾控局召开主题发布会，相关负责人通报，暑期人员流动增加，高温多雨，结合传染病流行规律和疫情多渠道监测结果，预计 病媒生物传染病、自然疫源性传染病、肠道传染病风险将会增加。 广东省疾控中心主任医师 李艳：患者典型症状主要表现为突起发热，全身肌肉、骨骼及关节痛，皮疹，出血及白细胞减少等。 大多数患者表现为无症状或者轻症，少数发展为重症登革热，表现为严重出血、休克及重要脏器损伤，严重者甚至死亡。 老人、孕妇以及患糖尿病、高血压和冠心病等基础疾病患者感染登革病毒后，容易发展为重症患者。 在这里也提醒公众，在登革热流行季节，如果伊蚊分布地区的市民出现上述症状，应及时到医院就诊。 感染了登革热怎么办？专家来支招 近期，我国南方部分省份已经进入夏季登革热高发期。发布会上，相关专家介绍，登革热由登革病毒感染导致，是经伊蚊叮咬传播的一种急性 传染病。我国常年有登革热输入病例报告，每年夏秋季在部分南方省份会发生本地传播疫情。 国家疾控局新闻发言人 席晶晶：随着夏季蚊虫进入活跃期，部分南方省份发生登革热等蚊媒传染病本土疫情的风险逐步上升，发热伴血小板 减少综合征等蜱传疾病，在局部地区存在发生聚集性疫情风险。手足口病 ...

Group 1 - The article highlights that mosquitoes are responsible for approximately 780,000 deaths annually, making them the deadliest animals globally [1][6][5] - In China, mosquito-borne diseases such as dengue fever and malaria are on the rise, with dengue cases experiencing a significant increase in recent years [2][9][11] - The distribution of mosquitoes in China is not limited to southern provinces; several northern provinces also have high mosquito populations [15][17] Group 2 - The main mosquito-borne diseases in China include dengue fever, malaria, and Japanese encephalitis, all of which can have severe health impacts [9][11] - Dengue fever is currently the most concerning mosquito-borne disease in China, with a rapid increase in cases reported in 2023 [9][11] - The spread of mosquito-borne diseases is closely linked to economic development, population mobility, and climate change, with global dengue cases increasing approximately 30 times over the past 50 years [11] Group 3 - The most common mosquito species in China include Aedes albopictus, Culex pipiens, and Anopheles sinensis, with a total of 418 known species [19] - Mosquito activity peaks at specific times, with different species exhibiting varying feeding patterns, which can influence their impact on human populations [20][21] - Mosquito saliva contains allergens that can cause significant immune responses in humans, leading to more severe reactions to bites from certain species [25]