Who diagnosed small pox and measles?

Answer 1

Smallpox was first diagnosed and described by the Persian physician Rhazes in the 9th century, while the disease was further characterized by Edward Jenner in the late 18th century, who developed the first successful smallpox vaccine. Measles was described by the Persian physician Al-Razi in the 9th century as well, but it was the work of the German physician Heinrich Friedrich von Burchard in the 17th century that helped clarify its distinction from other diseases. Both diseases were later studied extensively, leading to better understanding and eventual vaccinations.