While the development of some coronavirus vaccines is tied to research in cell lines derived from aborted fetuses many years ago, the Pfizer and Moderna vaccines do not use or include any fetal tissue.
虽然一些冠状病毒疫苗的开发与许多年前从流产胎儿中提取的细胞系的研究有关,但辉瑞和Moderna疫苗不使用或不包括任何胎儿组织。