 It is present in the majority
of community-associated Methicillin-resistant "Staphylococcus aureus" (CA-MRSA) isolates studied 
and is the cause of necrotic lesions involving the skin or mucosa, including necrotic hemorrhagic pneumonia.PVL creates pores in the membranes of infected cells.PVL is produced from the genetic material of a bacteriophage that infects "Staphylococcus aureus", making it 
more virulent.