Robert Koch, passed away on 27 May 1910, was a German physician and microbiologist. As one of the main founders of modern bacteriology, he identified the specific causative agents of tuberculosis, cholera, and anthrax and also gave experimental support for the concept of infectious disease, which included experiments on humans and animals. Koch created and improved laboratory technologies and techniques in the field of microbiology, and made key discoveries in public health. For his research on tuberculosis, Koch received the Nobel Prize in Physiology or Medicine in 1905.