突然！美国决定：撤销！

Core Viewpoint - The U.S. government has decided to cancel approximately $500 million in funding for mRNA vaccine development, marking a significant shift away from mRNA technology in public health strategy [2][3]. Group 1: Decision Details - U.S. Health and Human Services Secretary Robert F. Kennedy Jr. announced the cancellation of the mRNA vaccine development project, which includes the termination of 22 contracts related to mRNA technology by the Biomedical Advanced Research and Development Authority (BARDA) [2][3]. - The decision is influenced by consultations with top experts from the National Institutes of Health (NIH) and the FDA, concluding that the risks of mRNA technology outweigh its benefits for respiratory viruses like COVID-19 and influenza [3][4]. - The U.S. Department of Health and Human Services plans to redirect the canceled funds to "safer and broader vaccine platforms" that remain effective even with viral mutations [3]. Group 2: Expert Opinions - Many experts argue that mRNA vaccines have a significant advantage in rapid development and adaptability, which is crucial for responding to emerging viruses and variants [6]. - Dr. Peter Hotez criticized the decision as undermining national biosecurity and promoting a "pseudo-scientific agenda" [6]. - Dr. Paul Offit expressed concern that the decision was made without scientific evidence, potentially exposing the nation to unnecessary risks [6]. Group 3: Industry Impact - The cancellation of contracts with companies like Moderna and others indicates a broader shift in the U.S. government's approach to vaccine development, which may affect future innovations in the biomedical field [5][6]. - The U.S. Department of Health and Human Services is also terminating contracts with Emory University and Tiba Biotech, which were working on mRNA-based antiviral platforms [6].