Rudolf Stefan Jan Weigl, born on September 2, 1883, was a Polish physician known for creating the first effective vaccine against the epidemic typhus. The vaccine was developed amid the Holocaust and it helped numerous Jews.
In recognition to his contributions, Weigl was named as a Righteous Among the Nations Â– an honorific used by Israel to describe non-Jews who risked their lives during the Holocaust to save Jews from extermination by the Nazis. The 138th birth anniversary of the Polish investor was observed this year. He was born in the modern-day Czech Republic. He was appointed as a parasitologist in the Polish Army in 1914.