Staphylococci

Staphylococci are bacteria cocáceas group. This gram-positive cocci, measuring between 0.5 and 1.5 microns in diameter, forming a clustered multiply accumulation. According to their behavior on solid culture media, are divided into several subgroups: 1) Staphylococcus aureus, which form colonies golden yellow, 2) citreus staphylococci, with lemon yellow, 3) Staph color white dawn. On our skin usually staphylococci, where he underwent a saprophytic life. But sometimes penetrate the tissue of the wound or natural opening in the skin, such as hair follicles or glands sudorípidas, then act as pathogens. The most frightening thing is Staphylococcus aureus, while the disease is rare dawn.

Staphylococci produce a poison called hemolysins which dissolves red blood cells and causes tissue coagulation necrosis (coagulase). Staphylococci are generally distributed to the network a bit, which only produces local lesions characterized by necrosis and pus formation, a purulent infection. They are responsible for ulcers. In open fractures can cause pyogenic infections, and osteomyelitis. In newborns can cause exfoliative dermatitis Ritter.