Vaccination has been one of the most significant advancements in medical history, saving countless lives and preventing the spread of deadly diseases. The journey of vaccination began in the 18th century when Edward Jenner, a British physician, introduced the concept of immunization against smallpox. His groundbreaking work laid the foundation for modern vaccines. Edward Jenner’s method involved using cowpox to create immunity against smallpox. This discovery marked the start of a new era in disease prevention. Since Jenner’s time, vaccines have evolved dramatically, becoming a cornerstone of public health systems worldwide.