Purulent infections are characterized by purulent inflammation of tissues that arise in the implementation of pyogenic bacteria, most commonly Streptococcus, Staphylococcus, more rarely Pseudomonas or E. coli. For some common infections local centers of suppuration (glanders, bubonic plague, cutaneous anthrax) are typical. Purulent infection can develop in the form of the disease (furuncle, carbuncle, erysipelas, osteomyelitis, etc.), or as a complication of the wound. In some cases, purulent focus can disappear spontaneously or may be disposed of after a simple intervention, in others requires a complex operation. Generalization of the purulent process may lead to the development of general purulent infection, ie, sepsis. Purulent infections are very often resistant to antibiotics.