Repeatedly, I raised the question about the use of HEK-293 fetal cell line in ongoing quality control testing for the mRNA vaccines.* Both Pfizer and Moderna describe the use of this fetal cell line that originated with an aborted child in their in vitro pre-clinical trial testing.

We did not know if this same test would be conducted in an ongoing way during quality control testing in manufacturing. I argued that if the HEK-293 cell line was used for testing in a continuing way, then essentially the mRNA vaccines used the fetal cell line in the production process. Quality control is an inherent part of production, so the answer is important to an ethical assessment. 

We are happy to report that Moderna says they do “not use fetal cell lines during the vaccine manufacturing or LOT testing process.” See the letter below, addressed to the Immunization Director, Assistant Section Chief Disease Control in the state of North Dakota.

ModernaMIResponse

The information comes via Dr. Paul Carson, MD, FACP, Professor of Practice at North Dakota State University and Management of Infectious Diseases, Department of Public Health. Dr. Carson and I gave a presentation on vaccines for the St. John Paul II Foundation in March 2020 titled, “Vaccine Ethics: A View through Catholic Social Teaching.” We discussed the issue then.

He is working now with the state health department to provide a fact sheet on the use of the fetal cell lines and decided to pursue this question more formally with both Moderna and Pfizer, who has not yet provided a clear response.

“This does not remove the fact that fetal cell lines were used in some original proof-of-concept experiments in the development of these vaccines, which is still unethical, and problematic,” Dr. Carson points out, but he says, “it is important that we be as accurate as possible on the science, and not add a more proximate element to the use of these cell lines than actually exists.”

Everyone needs accurate information to make decisions. We are thankful that this question is answered and hope it helps you in making an informed decision as we continue to advocate for ethical practices.

*See the original article at National Catholic Register here and a longer summary here on the Children of God for Life website.