A lack of funding and political will is hampering efforts to develop the next generation of vaccines that could protect millions of people from emerging new pathogens, experts have warned.
专家警告说，缺乏资金和政治意愿正在阻碍开发下一代疫苗的努力，这些疫苗可以保护数百万人免受新出现的病原体的侵害。
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