Although a report on MRSA st398 from Dutch scientists was published weeks ago, the republication is now making waves.
Flutrackers seems to have picked it up yesterday here so we guess PubMed have just e-published an extract here despite the earlier date.
The full report can be downloaded here: the concluding words are stark:
"…MRSA ST398 has led to a significant increase in MRSA positive patients thereby putting a considerable strain on infection control practices in hospitals. At present the main health risk of MRSA ST398 lays with those persons in contact with livestock."
The abstract as given on Flutrackers with their emphasis is worth repeating.
Pig MRSA(ST398) is adapting itself to humans
Eur J Clin Microbiol Infect Dis. 2011 May 1. [Epub ahead of print]
Infection and colonization with methicillin resistant Staphylococcus aureus ST398 versus other MRSA in an area with a high density of pig farms.
Wulf MW, Verduin CM, van Nes A, Huijsdens X, Voss A.
PAMM Laboratory for Medical Microbiology, De Run 6250, 5504 DL, Veldhoven, The Netherlands, firstname.lastname@example.org.
The purpose of this study was to evaluate the impact of the emergence of animal related methicillin resistant Staphylococcus aureus ST398 in an area with a high density of pig farms. A retrospective analysis was performed of all MRSA isolates in the laboratory database from 2002 till 2008 including typing results and clinical data from infection control archives and patient charts.
The implementation of the screening of people in contact with pigs and veal calves for MRSA led to an increase in the average number of newly identified carriers from 16 per year between July 2002 and July 2006 to 148 between July 2006 and December 2008. This is a 925% increase of which 82% (108/132) was due to ST398.
The majority (74%) came from targeted screening but 7% was due to unexpected findings. A wide range of infections with ST398 occurred in patients with and without contact with livestock varying from post-operative wound infections to sepsis and post-trauma osteomyelitis with an overrepresentation of spa type t567 among the clinical isolates. ST398 isolates were more often multi-resistant than isolates of other spa-types.
The emergence of MRSA ST398 led to an increase in both MRSA carriers and MRSA infections.