Nyorai kupfuurira kweiyi ndima - Pashure pokuguma kwehondo Hirszfeld nomudzimai wake vakadzokera kuWarsaw, uko iye akagadza sangano re serum rakaenzana neEhrlich Institute for Experimental Therapy muFrankfurt. Nokukurumidza akava mutevedzeri womutungamiriri nomukuru wesayenzi weState Hygiene Institute muWarsaw uye, muna 1924, purofesa imomo. Muna 1931 akagadzwa purofesa wenguva dzose paYunivhesiti yeWarsaw uye akashanda pamabhodhi mazhinji epasi rose. Pashure pokubatwa kwePoland
neuto reGermany Hirszfeld akadzingwa se "asiri muAryan" kubva kuHygiene Institute asi, kuburikidza nekudzivirirwa kweshamwari, akakwanisa kuita mamwe mabasa esayenzi kumba kusvika muna Kukadzi 1941; zvisinei, zvaive zvisingaite kuti abudise.