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据路透社报道,一份临床试验登记记录显示,中国疫苗开发商北京万泰生物制药有限公司计划于下月开始对其基于鼻腔喷雾剂的COVID-19候选疫苗进行大规模试验。
据中国临床试验注册中心周三发布的条目显示,北京万泰公司计划招募4万名成年人参与三期临床试验。这些成年人将隔两周注射两剂北京万泰候选疫苗或疫苗安慰剂。
该条目记录没有显示北京万泰将在哪些国家进行临床试验。但万泰公司表示,菲律宾的一个伦理委员会已经批准了这项研究,为可能在该国进行试验扫清了一些障碍。
北京万泰的一名代表表示,条目记录并不意味着该公司已正式启动三期临床试验。这名代表说,万泰公司正在等待来自当局的进一步文件,但没有具体说明进一步的文件来自哪些国家。
作为普通手臂注射的替代方案,喷雾疫苗可以通过模仿呼吸道病毒的自然感染,触发呼吸道的特定免疫反应。候选疫苗使用的是一种弱化版本的流感病毒来传递部分新冠状病毒的遗传信息。
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