Botulinum toxin
In 1895 (seventy-five years later), Émile van Ermengem, professor of bacteriology and a student of Robert Koch, correctly described "Clostridium botulinum" as the bacterial source of the toxin. Thirty-four attendees at a funeral were poisoned by eating partially salted ham, an extract of which was found to cause botulism-like paralysis in laboratory animals. Van Ermengem isolated and grew the bacterium, and described its toxin, which was later purified by P Tessmer Snipe and Hermann Sommer.
William Hallock Park
In 1893, Dr. Hermann Biggs, Professor of Bacteriology at New York University and Chief Inspector of the New York City Board of Health, offered Park a director's position in the municipal laboratories to continue his work on diphtheria. In 1894, Dr. Biggs telegraphed Park with the news of the discovery of the diphtheria antitoxin by Drs. Emile Roux and Emil von Behring and instructed him to begin inoculating horses to produce antitoxin in New York City. The atypical strain of "Corynebacterium diphtheriae" most widely used for the production of diphtheria toxin was discovered by Dr. Anna Williams, who worked with Dr. Park.