The U.S. Food and Drug Administration approved the use of antibiotics on animals
In 1951, the FDA approved the use of antibiotics on animals. In 1943, farmers in the U.S. found…
The etiology of ‘swine influenza’ was established
In 1931, Rockefeller Institute investigator Richard Shope published the first of three landmark papers that established the etiology…
Swine influenza subtype H1N1 first appeared
In the summer of 1918, the swine influenza virus first appeared in western Illinois, where it caused not…