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Subcutaneous Infection of Methicillin Resistant Staphylococcus Aureus (MRSA)
12:18

Subcutaneous Infection of Methicillin Resistant Staphylococcus Aureus (MRSA)

Published on: February 9, 2011

Infection with Panton-Valentine leukocidin-positive methicillin-resistant Staphylococcus aureus t034

Christina Welinder-Olsson1, Kerstin Florén-Johansson, Leif Larsson

  • 1Bacteriological Laboratory, Sahlgrenska University Hospital, Göteborg, Sweden. christina.welinder-olsson@vgregion.se

Emerging Infectious Diseases
|August 6, 2008
PubMed

Insights

Panton-Valentine leukocidin (PVL)-positive methicillin-resistant Staphylococcus aureus (MRSA) ST398 is typically linked to animals. However, two Swedish patients with no animal contact were infected with PVL-positive MRSA, challenging this assumption.

Area of Science:

  • Microbiology
  • Infectious Diseases
  • Epidemiology

Background:

  • Panton-Valentine leukocidin (PVL)-positive methicillin-resistant Staphylococcus aureus (MRSA) Sequence Type 398 (ST398) is frequently associated with animal reservoirs.
  • The transmission routes and epidemiology of MRSA ST398 in human populations are still being investigated.

Observation:

  • Two cases of infection caused by PVL-positive MRSA, specifically spa type t034, were identified in patients in Sweden.
  • Neither of the infected patients reported any recent or direct contact with animals.

Findings:

  • This observation suggests that PVL-positive MRSA ST398 can cause human infections even in the absence of known animal contact.
  • The specific spa type t034 may represent a strain capable of human-to-human transmission independent of animal origins.

Implications:

  • The findings challenge the established understanding of MRSA ST398 epidemiology, suggesting potential for community or healthcare-associated transmission.
  • Further research is needed to understand the transmission dynamics and identify potential non-animal-related sources of PVL-positive MRSA ST398 infections.
  • Public health strategies may need to be revised to account for MRSA ST398 strains circulating in human populations without direct animal links.

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