Most vaccines are made from animal tissue. Seasonal Influenza vaccine, for example, is made from hundreds of millions of embryonated chicken eggs -- one fertile chicken egg for every vaccine dose. Monkey, pig, and guinea pig cells are used to culture various other vaccines.
Several important vaccines are cultured on human fetal tissue obtained through voluntary abortions in the 1960s. Vaccines cultured on various strains of human fetal issue include vaccines for Hepatitis A, Hepatitis B, Chickenpox, Polio, Measles, Mumps, and Rubella. All Chickenpox, Hepatitis A, and Rubella vaccines are derived from human fetal tissue cultures.
The very idea of seasonal vaccines is an admission that things evolve. In the case of influenza, this evolution is so rapid and predictable that science can normally create the next vaccine in anticipation of the next evolutionary turn of the virus.