Do vaccines contain human cell material?
Some vaccines are made from viruses or pathogenic molecules that are expanded in human, animal, or yeast cells.
There are two human cell lines that pharmaceutical companies use. These are called WI-38 and MRC-5. Both of these cell lines were established from cells taken from the lungs of aborted fetuses.
But for some people, the fact that cells from aborted fetuses are used in this way presents a moral problem.
Other viruses are grown in animal cells before being incorporated into vaccines. Animal cells used for this purpose include kidney cells from African green monkeys (Vero cells) and chick embryo cells.
