Methicillin-resistant Staphylococcus aureus in pigs with exudative epidermitis

Area of Science:

• Veterinary Medicine
• Infectious Diseases
• Public Health

Background:

• Strict control programs for methicillin-resistant Staphylococcus aureus (MRSA) are in place in human medicine in the Netherlands.
• MRSA poses a significant threat to both animal and human health, necessitating surveillance in all settings.

Purpose of the Study:

• To investigate the presence and potential transmission of MRSA in swine populations and associated farm workers.
• To determine if MRSA strains found in animals are related to those in humans.

Main Methods:

• Culturing of MRSA from exudative epidermitis lesions in piglets and pigs.
• Sampling and culturing of MRSA from farm workers.
• Molecular typing of MRSA strains to assess relatedness.

Main Results:

• MRSA was detected in 4 piglets and 20 pigs across two farms.
• MRSA was also identified in 2 workers on these farms.
• All identified MRSA strains were indistinguishable, indicating a common source or direct transmission.

Conclusions:

• MRSA is present in the Dutch swine population and can transmit to farm workers.
• The findings highlight the need for integrated surveillance and control strategies for MRSA across human and animal populations.
• Despite existing human MRSA control programs, animal-to-human transmission remains a concern.