Here are some key Christian figures in the history of vaccine development:

1. Edward Jenner (1749-1823): An English physician and scientist, Jenner is often credited with developing the first vaccine against smallpox in 1796. He observed that milkmaids who had contracted cowpox were immune to smallpox and used this observation to create a vaccine by exposing people to a mild form of cowpox.

Jenner was a Christian and was influenced by his faith in his work.

1. Louis Pasteur (1822-1895): A French chemist and microbiologist, Pasteur developed vaccines against anthrax and rabies in the late 19th century. He built upon Jenner’s work and made significant contributions to the field of vaccination.

Pasteur was a Catholic and saw his scientific work as a way to serve humanity and understand God’s creation.

Christians have certainly played a significant role in the development of vaccines.