Core Viewpoint - The global vaccine industry is undergoing a significant adjustment, with major players experiencing a collective decline in vaccine business due to various macro factors, including a growing public skepticism towards vaccines in the U.S. [2][3][7] Group 1: Financial Performance of Major Vaccine Companies - The latest Q3 financial reports from major vaccine companies, including Sanofi, Merck, Pfizer, and GSK, indicate a downturn in vaccine sales, with a projected 19% decline in total sales for the top ten vaccines in 2024 compared to 2023, amounting to $38.4 billion [4][6]. - Sanofi reported a 17% decline in sales of COVID-19 and flu vaccines, with traditional vaccine revenue dropping 8% to €3.36 billion, primarily due to a slowdown in flu vaccine sales [4]. - Merck's sales of its HPV vaccine Gardasil/GARDASIL 9 fell by 24% to $1.75 billion in Q3, with a staggering 40% drop in revenue for the first three quarters of the year [5]. - Pfizer's COVID-19 vaccine Comirnaty saw a 20% global sales decline, with a 25% drop in the U.S. market, alongside disappointing performances from its pneumonia and RSV vaccines [5][6]. Group 2: Macro Factors Impacting Vaccine Trust - The decline in vaccine trust in the U.S. is attributed to the actions of Robert F. Kennedy Jr., the new Secretary of Health and Human Services, who has promoted anti-vaccine sentiments and policies that undermine public confidence in vaccines [7][8]. - A recent survey indicated that 30% of Americans are skeptical about vaccines, with a significant drop in the belief that childhood vaccines are essential, from 58% in 2019 to 40% in 2024 [8]. - The CDC reported over 1,600 confirmed measles cases in 2025, a stark increase from 285 cases the previous year, highlighting the consequences of declining vaccination rates [9]. Group 3: Historical Context and Future Implications - The current situation in the U.S. vaccine market mirrors Japan's past vaccine industry decline, which was triggered by public trust issues and government policy changes that led to a significant drop in vaccination rates [10][11]. - The ongoing crisis in vaccine trust poses a risk not only to the industry but also to public health, as evidenced by the resurgence of preventable diseases like measles [9][10].

Core Insights - The company announced positive preliminary data from two ongoing clinical trials for its proprietary Trimer-Tag vaccine platform, focusing on the RSV+hMPV±PIV3 candidates [1] Group 1: Clinical Trials Overview - In Australia, a Phase I trial compared SCB-1022 (RSV+hMPV) and SCB-1033 (RSV+hMPV+PIV3) against SCB-1019 (RSV) in elderly participants who had not previously received any RSV vaccine [1][2] - The trial showed that both SCB-1022 and SCB-1033 induced neutralizing antibody responses for RSV-A and RSV-B with a mean fold increase of approximately 6-8 times, comparable to the control group [2] - The hMPV neutralizing antibody responses were also significant, with mean fold increases of about 6-7 times for hMPV-A and 8-9 times for hMPV-B [2] Group 2: Safety and Tolerability - Both SCB-1022 and SCB-1033 demonstrated good overall tolerability, with adverse events being mild and comparable to the control group [4] - No serious adverse events related to the vaccines were reported, indicating a favorable safety profile [4] Group 3: U.S. Clinical Trial Insights - A Phase I trial in the U.S. is assessing the immunogenicity of SCB-1019 in elderly participants who previously received the GSK RSV vaccine (AREXVY) [5] - Preliminary results indicated that SCB-1019 induced RSV-A and RSV-B neutralizing antibody responses with a mean fold increase of approximately 3.0-3.3 times, significantly higher than the 1.8-1.9 times observed with AREXVY [6][7] - The proportion of participants showing at least a 2-fold increase in neutralizing antibodies was about 69-75% for SCB-1019, compared to 33-40% for AREXVY [6][7] Group 4: Future Plans - Based on the positive Phase I results, the company plans to advance SCB-1022 and SCB-1033 to Phase II clinical trials in the first half of 2026 [4][8]

Core Viewpoint - Clover Biopharmaceuticals-B (02197) announced positive preliminary data from two ongoing clinical trials based on its proprietary and fully validated Trimer-Tag vaccine development platform, evaluating the company's PreF respiratory combination vaccine candidates (RSV+hMPV±PIV3) [1] Group 1: Clinical Trials - An ongoing Phase I clinical trial in Australia is assessing the combination vaccine candidates SCB-1022 (RSV+hMPV) and SCB-1033 (RSV+hMPV+PIV3) against SCB-1019 (Clover's RSV candidate vaccine) in a head-to-head comparison, targeting elderly individuals who have not previously received any RSV vaccine [1] - A Phase I clinical trial in the United States is conducting a head-to-head evaluation of SCB-1019 (Clover's RSV candidate vaccine) against AREXVY (GSK's RSV vaccine) in elderly individuals who have received at least two seasonal doses of AREXVY prior to enrollment [1]

本公告由三葉草生物製藥有限公司（「本公司」或「三葉草生物」，連同其附屬公司統稱「本集團」）董事 （「董事」）會（「董事會」）自願作出，以知會本公司股東及潛在投資者本集團最新的業務發展狀況。 香港交易及結算所有限公司及香港聯合交易所有限公司對本公告的內容概不負責，對其準確性或完整性亦不 發表任何聲明，並明確表示，概不就因本公告全部或任何部份內容所產生或因依賴該等內容而引致的任何損 失承擔任何責任。 自願公告 三葉草生物公佈其呼吸道聯合疫苗(RSV-hMPV-PIV3) 及 RSV 疫苗重複接種在老年人群的 I 期臨床試驗均獲得積極數據 本公司欣然宣佈兩項正在進行的臨床試驗的積極初步數據，基於公司自研獨有已获全面驗證的 Trimer-Tag （ 白質三聚體化）疫苗研發平台 ，於於估公公司的 PreF 呼吸道聯合疫苗候選產品（RSV+hMPV±PIV3），包括： 呼吸道聯合疫苗候選產品 RSV+hMPV±PIV3 I 期臨床試驗(澳大利亞)：完整初步數據 在澳大利亞進行的一項 I 期臨床試驗中，老年人群受試者（60-85 歲）入組後被隨機分配接種 SCB-1022 （RSV+hMPV）、SCB-1033 （RSV+ ...

Group 1: Company Overview - Zhonghui Biotech officially listed on the Hong Kong Stock Exchange at an issue price of HKD 12.9 per share, closing at HKD 33.28, a 157.98% increase, with a market capitalization exceeding HKD 13 billion [2] - The company plans to use the funds raised from the IPO for domestic and international registration of core products, clinical advancement of vaccines in development, upgrading production capabilities, and technology platform iteration [2][4] Group 2: Financial Performance - Zhonghui Biotech reported revenues of CNY 52.168 million in 2023 and CNY 260 million in 2024, with a net loss narrowing from CNY 4.25 billion in 2023 to CNY 2.59 billion in 2024 [4][5] - The company's first commercialized product, a quadrivalent influenza vaccine, contributed significantly to revenue, generating CNY 52.2 million in 2023 and CNY 260 million in 2024 [5] Group 3: Market Environment - The domestic influenza vaccine market is highly competitive, with 26 types of vaccines already on the market and 19 in clinical development [5][6] - The average bidding price for influenza vaccines in China has decreased from CNY 126 per dose in 2022 to CNY 93 in 2024, indicating a price war that could stimulate market demand [6][7] Group 4: Industry Trends - The Chinese vaccine market is projected to grow from CNY 535 billion in 2019 to CNY 1,205 billion in 2023, with expectations to reach CNY 3,431 billion by 2032 [8] - The industry faces challenges such as product homogeneity and insufficient vaccination willingness, leading to significant performance declines for many vaccine companies in 2024 [8][9] Group 5: Strategic Initiatives - Zhonghui Biotech is focusing on expanding its pipeline, which includes rabies vaccines, pneumococcal vaccines, shingles vaccines, RSV vaccines, and monkeypox vaccines [9][10] - The company is also pursuing international expansion, with plans to submit product registration applications in various countries, including Indonesia, Thailand, and Canada [11]

Group 1 - The core viewpoint highlights the ongoing challenges in the vaccine industry, including performance pressure, price wars, and policy disruptions, while acknowledging clear long-term growth drivers [3] - The recent report from the Shunde District Health Bureau indicates a total of 3,317 confirmed cases of Chikungunya fever, primarily in Lecong, Beijiao, and Chen Village, all classified as mild cases [2] - The World Health Organization warns that approximately 5.5 million people are at risk of Chikungunya fever, with transmission reported in 119 countries and regions [2] Group 2 - Short-term focus should be on the spread of diseases and the upcoming mid-year performance disclosures from related companies, monitoring price pressures and operational efficiency improvements [4] - The policy landscape is expected to adjust high-value drugs, including cancer vaccines and gene therapies, with potential for significant sales growth upon entering insurance coverage [4] - Long-term growth is driven by technological innovation in vaccine development, particularly in mRNA technology, which is expected to expand into respiratory viruses and cancer vaccines [5] Group 3 - The global market for vaccines is expanding, with significant opportunities in the "Belt and Road" countries, and the importance of WHO-PQ certification for domestic vaccine companies aiming for international markets [5] - The aging population and increased health awareness are driving demand for adult vaccines, with current penetration rates for vaccines like the flu vaccine and HPV vaccine being notably low in China [5] - The recent market rally is attributed to various factors, including event catalysts and funding dynamics, with a recommendation to monitor pandemic developments and policy progress [6]

Market Overview - On July 24, the Shanghai Composite Index rose by 0.65% to 3605.73 points, with the Shenzhen Component Index increasing by 1.21%, and the ChiNext Index up by 1.5% [1] - The total trading volume in A-shares was 1.87 trillion yuan, slightly down from 1.9 trillion yuan the previous day [1] - The market showed a low open and high close, with sectors like vaccines and medical beauty experiencing significant gains, particularly the vaccine ETF (159643) which surged by 6.33% in a single day [1][3] Vaccine Sector Analysis - As of July 22, five districts in Foshan reported confirmed cases of Chikungunya virus, totaling 3195 cases, prompting a warning from the World Health Organization about the risk of widespread outbreaks [4] - Bavarian Nordic's Chikungunya vaccine (VIMKUNYA) has been approved in Europe and the U.S., showing a neutralizing antibody response rate of 97.8% after a single dose, marking it as the first effective vaccine against this virus [4] - The domestic vaccine sector has been under pressure since the decline in COVID-19 demand, with the National Vaccine and Biotechnology Index down over 60% from its 2022 peak, leading to low institutional holdings [4] Short-term Industry Outlook - The vaccine industry is currently in a bottoming phase, with overall vaccine batch issuance down 14% year-on-year in Q1 2025, reflecting inventory adjustments and weak self-paid demand [5] - Companies are focusing on pipeline adjustments, emphasizing technological innovation and the development of multi-valent vaccines, particularly in the oncology vaccine sector, which is gaining traction [5] - The upcoming mid-year performance disclosures of relevant companies will be critical to monitor for price pressures and operational efficiency improvements [7] Long-term Growth Drivers - The long-term growth drivers for the vaccine industry remain clear, supported by policy changes, technological advancements, and increasing global demand [6] - The mRNA technology platform is advancing rapidly, with potential applications in respiratory viruses and oncology vaccines, while new products like the shingles vaccine and RSV vaccine could enhance market protection [8] - The aging population and heightened health awareness are expected to drive adult vaccine demand, with significant gaps in vaccination rates for diseases like shingles and HPV [9] Investment Opportunities - The vaccine ETF (159643) tracks the vaccine biotechnology index, which includes companies involved in vaccine research, production, and related biotech services, reflecting the overall performance of the vaccine sector [9]

Group 1 - The core viewpoint of the news highlights the significant increase in vaccine-related activities, with a reported 2,934 confirmed cases of Kikenya fever in Shunde District, Guangdong, primarily in Lecong, Beijiao, and Chen Village, all classified as mild cases [1] - The number of clinical trial applications and market approvals for vaccines in the first half of 2025 has shown rapid growth, with 45 clinical trial applications and 12 market approvals, totaling 57 applications, representing a year-on-year increase of 58.3% [1] - The growth in vaccine applications is driven by high-demand products, with influenza and shingles vaccines leading the submissions, each with 11 applications, and a notable increase in the development of recombinant and mRNA vaccines [1] Group 2 - The vaccine ETF (159643) tracks the vaccine biotechnology index (980015), which includes listed companies involved in vaccine research, production, and related biotechnology businesses, reflecting the overall performance of the vaccine industry [2] - The index is compiled by China Securities Index Co., Ltd., focusing on the biopharmaceutical sector, particularly the vaccine and biotechnology fields [2]

Investment Rating - The industry investment rating is maintained as "Overweight" [1] Core Insights - In the first half of 2025, the number of clinical trial applications and market approvals for vaccines continues to grow rapidly, with 45 clinical trial applications and 12 market approvals accepted, representing a 58.3% year-on-year increase [3] - The vaccine industry is experiencing a phase of supply-demand imbalance, impacting overall performance, but there is a long-term focus on innovation and international expansion [8][24] - The industry is driven by three main factors: policy, demand, and technology, with a strong emphasis on innovative vaccines and technical upgrades [8][24] Summary by Sections Industry Performance - The vaccine sector saw a 3.61% increase last week, ranking second among 13 sub-sectors in the pharmaceutical industry [4] - The cumulative decline in the vaccine sector since the beginning of 2025 has narrowed to 6.18% [4] Market Review - The vaccine sector's PE (ttm) is 75.17X, with a year-on-year maximum of 76.07X and a minimum of 19.57X, indicating a significant valuation range [6] - The PB (lf) for the vaccine sector is 1.83X, with a maximum of 2.58X and a minimum of 1.62X over the past year [6] Investment Recommendations - The report suggests focusing on companies with strong research and innovation capabilities, particularly those with differentiated products, recommending companies like CanSino and Kanghua Biological [8][26] - The report emphasizes the importance of technical innovation and product differentiation as key competitive advantages in the vaccine industry [26]

Core Viewpoint - The restructuring of the CDC's Advisory Committee on Immunization Practices (ACIP) has sparked significant controversy, with former members warning that it could severely undermine the U.S. vaccination program and access to life-saving vaccines [1][2]. Group 1: Impact on Vaccine Companies - Following the dismissal of the 17 ACIP members, shares of several vaccine companies have declined: Moderna (MRNA) down 9.2%, Novavax (NVAX) down 12.4%, Merck (MRK) down 1.4%, and Pfizer (PFE) slightly up by 0.1% [1]. - The decisions made by ACIP directly influence vaccination programs for children, insurance reimbursement, and government procurement [1]. Group 2: Controversy Surrounding Dismissal - The dismissal was initiated by Robert F. Kennedy Jr., the new Secretary of Health and Human Services, who claimed that the former committee members had conflicts of interest with vaccine companies [2]. - Former ACIP members refuted these claims, asserting that they adhered to strict conflict-of-interest guidelines and that the committee was one of the most transparent federal bodies [2]. Group 3: Reappointment of New Members - After the dismissal, Kennedy appointed 8 new members to ACIP, some of whom have publicly expressed anti-vaccine views, raising concerns about the committee's future direction [3]. - The restructured ACIP is expected to hold a meeting from June 25 to 27 to vote on vaccine recommendations for COVID-19, HPV, influenza, meningococcal, and RSV [3]. Group 4: Broader Implications of Kennedy's Policies - Kennedy's administration has initiated significant reforms, including a major restructuring of the Department of Health and Human Services, which could lead to budget cuts of 30% to 40% for the NIH and CDC [5]. - His controversial proposals include restricting federally funded scientists from publishing in major medical journals, which has raised concerns about academic freedom [5].