**5. Pathogenesis and pathogenicity**

Staphylococci are pyogenic and cause suppurative lesions. Virulent factors for this gram-positive bacterium are capsule, plasmid or phage-mediated, cell wall proteins, teichoic acids, and protein A **Figure 3** [2].

**Figure 3.** *Sheep or ox blood agar with Double haemolysis of S. aureus. Modified from [1].*
