"NOTE TO READERS: If a vaccine is not discussed on this page, it does not employ the use of fetal cells in production. For example, no influenza vaccine available in the U.S. requires the use of fetal cells for production. Vaccines for varicella (chickenpox), rubella (the “R” in the MMR vaccine), hepatitis A, rabies (one version, called Imovax®) and COVID-19 (one U.S.-approved version, Johnson & Johnson (J&J)/Janssen) are all made by growing the viruses in fetal cells. All of these, except the COVID-19 vaccine, are made using fibroblast cells. The COVID-19 vaccine (J&J/Janssen) is made using fetal retinal cells."