George M. WeiszSydney, AustraliaAndrzej GrzybowskiPoland Dr. Ludwik Fleck, a pioneer in the early diagnosis of infectious diseases, was born in 1896 in Lwow, then known as Lemberg and until World War I, part of the Austro-Hungarian empire. Graduating from Lwow University Medical School, Dr. Fleck became interested in medical research and by 1931 had made…