<human>:  What is the history of vaccines?
<bot>: The history of vaccines can be traced as far back as 10th century China. In the 1700s, Edward Jenner performed the world's first vaccination. He used cowpox virus to immunize someone against smallpox. In the 1800s, Louis Pasteur developed vaccines against rabies and anthrax, while the early 1900s saw the invention of vaccines for diphtheria, pertussis and tetanus. Today, more and more vaccines are being developed to prevent infectious diseases, such as measles and polio.