Recently, CDC's WeChat official account released a question and answer about the prevention and control of chikungunya fever. The main contents are as follows: What is chikungunya fever? What is the prevalence of chikungunya fever globally and in China? Chikungunya fever is an acute infectious disease caused by chikungunya virus infection and transmitted through mosquito bites. It was first discovered in Tanzania in 1952, initially prevalent in Africa, and gradually spread to Southeast Asia, South Asia, Indian Ocean islands, and the Americas. Currently, over 100 countries and regions worldwide have reported local outbreaks of chikungunya fever. China first reported imported cases of chikungunya fever in 2008, local outbreaks caused by imported cases in 2010, and localized outbreaks caused by imported cases in some provinces in 2025. What prevention and control measures will China take after including chikungunya fever in the management of Class B infectious diseases? Adhere to the comprehensive epidemic prevention and control mechanism of "Party leadership, departmental cooperation, social mobilization, and public participation", and implement and refine various prevention and control measures. One is to conduct epidemic reporting in accordance with the law. Implement a 24-hour online reporting system for discovered cases of chikungunya fever in accordance with the law, and report clustered outbreaks through the Public Health Emergency Management Information System within 2 hours. The second is to strengthen monitoring and early warning analysis. Conduct medical examinations on individuals who voluntarily declare or discover abnormal entry in accordance with the law, and strictly prevent the importation of overseas epidemics; Strengthen epidemic monitoring and risk assessment in key areas during the epidemic season, screen non respiratory fever syndrome patients with epidemiological history, and detect cases early; Regularly carry out ecological, pathogen, and drug resistance monitoring of Aedes mosquitoes, providing support for scientific analysis and control of the epidemic. The third is to carry out comprehensive mosquito control on a regular basis. Adhere to the comprehensive mosquito control strategy with environmental governance as the main focus, extensively and deeply carry out patriotic health campaigns, eliminate hygiene blind spots to the maximum extent, comprehensively clean up mosquito breeding grounds, and reduce the risk of epidemic transmission. The fourth is to handle the epidemic in a graded and classified manner. When an imported epidemic occurs, it is necessary to provide proper case treatment and mosquito isolation management to prevent the outbreak of local epidemics; At the same time, actively carry out mosquito prevention and control work to keep mosquito vector density at a safe level. When a local outbreak occurs, scientifically delineate the risk area, initiate emergency monitoring of cases and mosquito vectors, and quickly reduce the mosquito vector density to a safe level to prevent the spread of the epidemic. When a cluster epidemic occurs, it is necessary to "detect and extinguish one", quickly block local transmission, and strictly prevent the spread of the epidemic. What are the main differences between chikungunya fever and dengue fever? Chikungunya fever and dengue fever are both acute infectious diseases transmitted by Aedes mosquitoes, characterized by fever, joint pain, rash, and other clinical manifestations. Their main differences are: firstly, the pathogens are different. Chikungunya fever is caused by the Chikungunya virus and belongs to the family of enveloped viruses, genus A virus; Dengue fever is caused by dengue virus and belongs to the genus Flavivirus in the family Flaviviridae. The second difference is the incubation period. The incubation period of chikungunya fever is generally 1-12 days, mostly 3-7 days, which is shorter than the incubation period of dengue fever (usually 1-14 days, mostly 5-9 days) and spreads faster. Thirdly, clinical symptoms vary. Chikungunya fever is mostly characterized by moderate to low-grade fever, significant joint pain, and often affects multiple joints, particularly the distal small joints; Dengue fever is mostly characterized by moderate to high fever, with a longer duration, more obvious muscle pain, abdominal symptoms (abdominal pain, bloating, constipation, etc.), and a tendency towards bleeding. What are the treatment measures for chikungunya fever? Which groups of people are at risk of severe illness? At present, there is no specific drug for chikungunya fever, which focuses on symptomatic support treatment. Most patients are mild and can recover after a week of illness, but the elderly, infants, pregnant women and patients with basic diseases such as hypertension, diabetes, heart disease are at risk of serious disease. What measures can the public take to prevent infection and control the spread of diseases? The prevention and control of chikungunya fever requires the participation of the whole population and group prevention and control. It is advocated that the public actively participate in environmental sanitation management and mosquito vector control, take personal protective measures, and seek medical attention promptly after suspected symptoms appear, which can effectively prevent infection and spread of the epidemic. One is to actively prevent and control mosquitoes. Use mosquito coils, electric mosquito swatters and other measures to kill adult mosquitoes during the active season of mosquito vectors; Regularly remove accumulated water, turn over pots and cans, clean up garbage in front and behind the house, frequently change water and clean roots of aquatic plants to reduce mosquito breeding. Secondly, take good personal protective measures. Residents in popular areas can install screen doors, screen windows, and hang mosquito nets in their residences; When going out during mosquito active periods such as early morning and evening, try to wear light colored long sleeved pants and apply mosquito repellent on exposed skin. The third is to prevent spreading to others. Individuals who have traveled to countries or regions where chikungunya fever is prevalent within the past 12 days, or those who live, work, or reside with chikungunya fever patients, are required to conduct self health monitoring and implement mosquito isolation measures. Once suspected symptoms appear, promptly seek medical attention at a medical institution and proactively inform medical personnel of their travel history, minimizing cross regional mobility and avoiding the spread of the epidemic. (New Society)