[4] In a classic 1930 paper,[5] Dack and 3 colleagues published an account of food poisoning that occurred in Chicago in December 1929.
Eleven people became sick with vomiting and severe diarrhea after eating, on slightly different occasions, three-layered sponge cake filled with cream.
Three human volunteers, namely the physicians William E. Cary, Edwin O. Jordan, and Dack, drank different volumes of the filtrate.
[8] In addition to his research on staphylococcal food poisoning, Dack studied botulism, ulcerative colitis, and salmonella infection.
After Jordan's death in 1936, Dack took responsibility for updates of the book and published his first version of Food Poisoning in 1943 with subsequent editions in 1949 and 1956.