In Iran and also throughout the world, Dr. Mahmoud Bahmanyar (1919-2007) is acknowledged as a well-known researcher
mainly in the field of rabies and plague. As an expert of plague for the World Health Organization (WHO), he accomplished many
missions in several countries such as India, Cambodia, Myanmar, Indonesia, Vietnam, Yemen, and Brazil. His research on rabies
has played an important role leading to the successful combined use of immune-serum and anti-rabies vaccine for prevention of
human rabies worldwide. He also conducted many studies in the field of typhus, relapsing fever, and polio. The present article
aimed to review his activities.