Review on Panton Valentine leukocidin toxin carriage among Staphylococcus aureus

Area of Science:

• Microbiology
• Infectious Diseases
• Toxicology

Background:

• Panton Valentine leukocidin (PVL) is a Staphylococcus aureus virulence factor that creates pores in polymorphonuclear cells.
• Initially associated with methicillin-susceptible S. aureus, PVL production is now linked to methicillin-resistant S. aureus (MRSA) due to mecA gene acquisition.
• PVL-positive MRSA represents a significant challenge due to antibiotic resistance and potent toxin production.

Purpose of the Study:

• To highlight the increasing threat of PVL-positive MRSA globally.
• To discuss the severe clinical manifestations and high mortality associated with PVL-positive MRSA infections.
• To emphasize the need for control measures against PVL-positive MRSA, particularly in hospital settings.

Main Methods:

• Literature review and synthesis of existing data on PVL-positive S. aureus and MRSA.
• Analysis of reported cases and epidemiological trends of PVL-positive MRSA infections.
• Clinical case study analysis of severe infections caused by PVL-positive MRSA.

Main Results:

• PVL-positive MRSA strains have spread globally, causing life-threatening infections in the UK, Europe, USA, and Australia.
• These superbug strains can cause rapid, fatal infections, even in healthy young individuals, within 24 hours.
• Associated infections range from skin and soft tissue infections to invasive conditions like necrotizing pneumonia.

Conclusions:

• PVL-positive MRSA is a virulent, drug-resistant pathogen posing a significant global health risk.
• The emergence and spread of community-associated PVL-positive MRSA into hospitals increase mortality rates.
• Urgent control strategies are necessary to prevent widespread hospital-acquired infections by PVL-positive MRSA.