There has been attention in the media recently regarding the use of foetal cell lines by the Oxford Vaccine Group to develop their COVID-19 vaccine candidate. Cell lines are currently used to manufacture many vaccines including varicella, hepatitis A, rabies and MMR vaccines. 

The below information from the Children’s Hospital of Philadelphia (CHoP) discusses the background behind using these cell lines in vaccine development as well as any potential ethical or religious concerns surrounding this. 

Vaccine ingredients- Fetal tissues