Core Viewpoint - The recent outbreak of Chikungunya fever in Guangdong has raised concerns, with over 4,000 confirmed cases reported in Foshan as of July 24, and the World Health Organization warning that the virus is spreading globally, affecting approximately 5.5 million people across 119 countries [1][2]. Industry and Company Insights - The capital market is beginning to pay attention to the Chikungunya fever outbreak, with a report from Everbright Securities highlighting the rapid increase in confirmed cases and the potential for related diagnostic products to gain approval [3][4]. - Currently, there are no specific treatments or vaccines for Chikungunya fever, and prevention focuses on mosquito control measures. The virus is primarily transmitted by Aedes mosquitoes, and the clinical symptoms include acute fever and severe joint pain [3][4]. - The demand for diagnostic solutions is expected to rise, with several A-share companies already offering testing solutions based on PCR and high-throughput sequencing methods. Companies such as Da'an Gene, Wanfu Biology, and Shengxiang Biology are mentioned as key players in this space [7]. - The outbreak may also increase demand for insecticides, with companies like Yangnong Chemical and Runben Co., which specialize in mosquito repellent products, experiencing significant stock price increases of 7.5% and 21.4%, respectively [7][8]. - Analysts suggest that the sustainability of investment opportunities related to Chikungunya fever will depend on the severity and progression of the outbreak [8].

Investment Rating - The report maintains an "Overweight" rating for the pharmaceutical and biotechnology sector [4]. Core Insights - The number of confirmed cases of Chikungunya fever is rapidly increasing, with 3,645 cases reported in Foshan as of July 23, 2025, including a daily increase of 383 cases in Shunde District [1]. - The World Health Organization (WHO) has warned that 119 countries and regions are at risk of virus transmission, with approximately 5.5 million people facing infection risk [1]. - There are currently no specific drugs or vaccines available for Chikungunya fever, making mosquito control the primary prevention strategy [2]. - Multiple companies have launched testing solutions for Chikungunya fever, and the approval of these products is expected to accelerate [3]. Summary by Sections Industry Overview - Chikungunya fever is caused by the Chikungunya virus (CHIKV) and primarily transmitted by Aedes mosquitoes, with symptoms including acute fever and severe joint pain [2]. - The absence of effective treatment and vaccines necessitates supportive care and preventive measures such as mosquito control [2]. Testing Solutions - Common testing methods for Chikungunya fever include serological testing, nucleic acid testing, and virus isolation, but no test kits have been approved for sale in China [2]. - Companies like DaAn Gene, Wanfu Biology, and others have developed PCR-based testing solutions, while others are exploring high-throughput sequencing methods [3]. Investment Opportunities - The report suggests focusing on companies that have developed Chikungunya testing solutions, including DaAn Gene, Wanfu Biology, and others [3].

Core Viewpoint - The epidemic of Chikungunya fever in Guangdong Province remains at a high plateau, indicating a severe situation that requires attention [1]. Summary by Sections Epidemic Situation - As of July 22, 2025, Shunde District in Foshan City reported a total of 2,934 confirmed cases of Chikungunya fever, with a significant increase of 463 cases in just one day [4][5]. - The first report of the epidemic in Shunde was on July 15, 2025, with 478 confirmed cases, showing an increase of over 2,000 cases in just over a week [4]. - The World Health Organization (WHO) reported that 119 countries and regions have identified Chikungunya virus transmission, with approximately 5.5 million people at risk globally, potentially leading to widespread outbreaks [4][5]. Companies Involved in Prevention and Detection - **Runben Co., Ltd. (润本股份)**: A leading domestic company in mosquito repellent products, with a revenue of 440 million yuan in 2024, showing a year-on-year growth of 35.4% and a gross margin of 54.2% [7]. - **Rainbow Group (彩虹集团)**: A well-known pest control company in China, offering a full range of mosquito repellent products that play a crucial role in controlling Chikungunya fever [8]. - **Shanghai Jahwa (上海家化)**: The "Liushen" brand is the top brand in China for mosquito repellent flower water, holding significant brand influence in mosquito prevention and personal care [9]. - **Longyun Group (朗云集团)**: A Hong Kong-listed company that has maintained the number one market share in pest control products for ten consecutive years, with notable products performing well during the epidemic [10]. - **Kangzhi Pharmaceutical (康芝药业)**: Offers a full range of baby and child health protection products, including disinfectants and mosquito repellents, demonstrating expertise in child health protection [11]. - **Shuoshi Gene (硕世纪录物)**: Utilizes gene sequencing technology for Chikungunya fever testing, providing precise diagnostic support for epidemic prevention [12]. - **Da'an Gene (达安基因)**: Provides nucleic acid testing kits for Chikungunya virus, leveraging extensive experience in molecular diagnostics [13]. - **Huiyu Medical (会域医学)**: A leading medical testing institution in China, employing advanced technology for accurate diagnosis of Chikungunya fever [14]. - **Wansheng Biology (万学生物)**: Offers rapid testing solutions for Chikungunya virus, focusing on point-of-care testing [16]. - **Nuo Weisha (诺唯莎)**: Combines molecular design with various heat-start technologies to enhance detection efficiency for mosquito-borne viruses [17].