BBC记者建议到非洲进行疫苗试验 全国已有3种疫苗进入二期临床阶

{"title":"全国已有3种疫苗进入二期临床阶段", "url":"https://www.cqcb.com/kangyi/ /2359867.html", "image":"https://image2.cqcb.com/d/file/kangyi/ /4a5a272559f5801cdb2eab180bccb84c.png", "smalltext":"来自上游新闻客户端", "id":"2359867", "classid":"3608"}