Salmonella is a rod-shaped gram-negative bacterium of the Enterobacteriaceae family. It was named after Daniel Elmer Salmon who administered the Veterinary Division of the United States Department of Agriculture.
Staphylococcus aureus is facultative anaerobic, gram-positive cocci. It was named as such because of its grape-like (Greek: staphyl) forming clusters of cells and golden (aureus) colour of colonies. S. aureus can cause diseases through direct infection or indirectly by the production of toxins. This bacterium is known as a leading cause of bloodstream infections with consequences such as infective endocarditis, septic arthritis, and osteomyelitis.