Group 1 - Multiple listed companies are developing detection solutions for Chikungunya virus, including Kingmed Diagnostics, Wanfu Biology, and Shengxiang Biology [1][2] - Kingmed Diagnostics has established a comprehensive platform for serological, fluorescent PCR, and sequencing tests to accurately identify the Chikungunya virus, aiding in clinical diagnosis [1] - Wanfu Biology has responded to the recent guidelines from the National Disease Control Bureau by developing several detection products that create a closed-loop system for rapid screening, precise detection, and monitoring [1] - Shengxiang Biology has introduced a dual-platform solution combining rapid nucleic acid testing and sequencing for precise tracing, with a detection time of 25 to 45 minutes and high sensitivity [1] Group 2 - According to a report by Everbright Securities, several domestic listed companies, including Da'an Gene, Wanfu Biology, Shengxiang Biology, Zhijiang Biology, Shuoshi Biology, Mingde Biology, and Rendu Biology, have launched Chikungunya virus detection solutions [2]

特此公告。 江苏硕世生物科技股份有限公司董事会 2025 年 8 月 2 日 1 本公司董事会及全体董事保证本公告内容不存在任何虚假记载、误导性陈述 或者重大遗漏，并对其内容的真实性、准确性和完整性依法承担法律责任。 江苏硕世生物科技股份有限公司（以下简称"公司"）董事会于近日收到公 司副总经理裴磊先生递交的书面辞职报告。裴磊先生因个人原因申请辞去公司副 总经理职务，辞职后将不再担任公司任何职务。 根据《中华人民共和国公司法》及《公司章程》的有关规定，裴磊先生的辞 职报告自送达董事会之日起生效。截至本公告披露日，裴磊先生未持有公司股份， 裴磊先生的辞职不会对公司的日常运营产生不利影响。 裴磊先生在担任公司副总经理期间勤勉尽责，恪尽职守，公司及董事会对裴 磊先生任职期间为公司发展做出的贡献表示衷心的感谢！ 证券代码：688399 证券简称：硕世生物 公告编号：2025-020 江苏硕世生物科技股份有限公司 关于副总经理辞职的公告 ...

硕世生物公告，公司董事会于近日收到副总经理裴磊的书面辞职报告。裴磊因个人原因申请辞去副总经 理职务，辞职报告自送达董事会之日起生效。裴磊辞职后不再担任公司任何职务，且未持有公司股份。 公司及董事会对裴磊任职期间的贡献表示感谢，其辞职不会影响公司日常运营。 ...

Core Viewpoint - The article highlights the urgent need for effective detection and control measures against mosquito-borne diseases, particularly Chikungunya virus, as the World Health Organization warns of its spread across 119 countries, affecting approximately 5.5 million people [1]. Group 1: Industry Response - Wanfu Biotech has developed rapid and precise detection solutions for mosquito-borne diseases, providing reliable monitoring schemes for disease prevention and control centers [2]. - Fosun Diagnostics has quickly provided Chikungunya virus test kits to aid in epidemic prevention, emphasizing early detection and treatment as crucial to controlling the spread [7]. - Multiple companies, including BGI and Dean Diagnostics, are leveraging advanced sequencing technologies to enhance the detection capabilities for mosquito-borne viruses, ensuring a comprehensive response to the epidemic [14][19]. Group 2: Detection Technologies - Molecular POCT technology allows for results in just 25 minutes, utilizing magnetic bead-based nucleic acid extraction and real-time fluorescent quantitative PCR to detect pathogens in human serum and plasma [3]. - Various nucleic acid detection kits are available, including those for Chikungunya virus, Dengue virus, and Zika virus, with detection limits as low as 200 copies/mL [6][10]. - RenDu Biotech has introduced a series of detection kits based on real-time fluorescent isothermal amplification technology, which can provide results in 40 minutes, significantly faster than traditional methods [30][31]. Group 3: Product Offerings - Companies are offering a range of test kits for various mosquito-borne pathogens, including those that can detect multiple viruses simultaneously, such as Dengue, Chikungunya, and Zika [11][28]. - The kits are designed for ease of use, with many requiring only standard PCR equipment, thus facilitating widespread adoption in healthcare settings [30]. - High-sensitivity and specificity are emphasized across products, ensuring accurate detection without cross-reactivity with other pathogens [9][8].

Group 1: Overview of Chikungunya Fever - Chikungunya virus is spreading globally, with 119 countries reporting cases and approximately 5.5 million people at risk of infection [1] - In Foshan, Guangdong Province, over 4,000 confirmed cases have been reported, primarily mild cases [1] Group 2: Symptoms and Treatment - Chikungunya fever is characterized by high fever and severe joint pain, particularly affecting small joints [2] - There is currently no specific treatment or widely used vaccine; management is primarily supportive, focusing on symptom relief [3] Group 3: Market Response and Company Involvement - Investors are inquiring about companies with products related to Chikungunya fever, focusing on mosquito repellent products, testing kits, and antipyretic and analgesic medications [4] - Companies like Rainbow Group, Runben Co., and Weigao Medical have reported an increase in sales of mosquito repellent products [5][6] - Pharmaceutical companies such as Renhe Pharmaceutical and Xinhua Pharmaceutical have indicated they offer products for fever and pain relief [7] Group 4: Testing Products - Companies like Kehua Bio, YHLO Biotech, and Shuoshi Bio have developed testing kits for Chikungunya virus [8] - YHLO Biotech has a rapid screening kit for Chikungunya, currently used for research purposes [8] - The market interest in these companies has led to notable stock price increases since the news of the outbreak [8]

Group 1 - The World Health Organization (WHO) reports that 119 countries and regions have identified the spread of Chikungunya virus, with approximately 5.5 million people at risk, potentially leading to widespread outbreaks that could strain health systems [1] - Several A-share listed companies have made strategic moves in response to the Chikungunya virus, including Ayhuilong, Shuoshi Biology, Aotai Biology, Rendu Biology, and Rainbow Group, who have shared their plans on the stock exchange interaction platform [1] Group 2 - Chikungunya fever is primarily transmitted by Aedes mosquitoes, with symptoms including fever, rash, and joint pain. Measures such as eliminating breeding sites and insect extermination can help interrupt transmission [2] - The Guangdong Province reported a local outbreak of Chikungunya fever linked to imported cases, with 3,645 confirmed cases reported as of July 23, all mild, and 2,018 patients have recovered [2] - The National Disease Control Bureau and the Guangdong Provincial Health Commission have dispatched expert teams to guide and participate in epidemic prevention efforts, focusing on cutting community transmission and preventing the spread of the outbreak [2] Group 3 - Multiple A-share listed companies are developing testing solutions for Chikungunya virus, primarily for research purposes or overseas markets. Ayhuilong's partner company has developed a rapid screening kit, while Shuoshi Biology and Aotai Biology also have testing kits available for research use [3] - Currently, there are no approved Chikungunya testing kits in the domestic market, but the approval process for related testing products is expected to accelerate [3] - Rainbow Group offers a wide range of household insecticide products aimed at mosquito control, including electric mosquito repellent and aerosol insecticides, which utilize high-quality active ingredients recommended by WHO [3]

Core Viewpoint - The article discusses the outbreak of Chikungunya fever in China and globally, highlighting the urgent need for effective detection and prevention measures due to the lack of specific treatments and vaccines [2][3]. Group 1: Current Situation - As of July 23, 2025, Foshan reported a total of 3,645 confirmed cases of Chikungunya fever, with the Shunde District accounting for 3,317 cases, an increase of 383 cases from the previous day [2]. - The World Health Organization (WHO) has warned that 119 countries and regions are experiencing virus transmission, with approximately 5.5 million people at risk of infection, potentially straining healthcare systems [2]. Group 2: Prevention and Control - There are currently no specific drugs or vaccines for Chikungunya fever; the primary prevention strategy is mosquito control, including eliminating breeding sites and using personal protective measures [3]. - The clinical features of Chikungunya fever include acute fever, severe joint pain, and rash, with higher risks for children, the elderly, and immunocompromised individuals [3]. Group 3: Diagnostic Methods - Common diagnostic methods for Chikungunya fever include serological testing, nucleic acid testing, and virus isolation, with specific timelines for sample collection to ensure accurate results [4]. - Currently, there are no approved test kits for Chikungunya fever in China, which poses a challenge for timely diagnosis [4]. Group 4: Market Opportunities - Several domestic companies, including DaAn Gene, Wanfu Biology, and Shengxiang Biology, are developing Chikungunya fever detection solutions based on PCR methodologies, with others exploring high-throughput sequencing and antigen-antibody detection methods [5]. - The ongoing outbreak is expected to accelerate the accumulation of clinical data for these detection products, potentially speeding up their approval and market entry [5].

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].

硕世生物：公司有基孔肯雅病毒检测试剂盒 仅供科研使用 智通财经7月24日电，硕世生物在互动平台表示，公司蚊传虫媒病毒系列产品线中有基孔肯雅病毒检测 试剂盒。该产品目前仅供科研使用，未对公司当前收入及利润产生重大影响。 ...