ning whether PVL truly led to severe illness, says Barry Kreiswirth, Ph.D., study co-author and a leading staphylococcal epidemiologist from ICPH in Newark. He adds, "We routinely receive calls from clinical microbiology laboratories asking to test for the presence of PVL, and it is hard to dissuade them that the PVL results will not affect patient care. Hopefully, the robust and contrary findings in our study provide the experimental evidence to convince the staphylococcal researchers and clinicians that PVL is not a significant virulence factor."

Next, Dr. DeLeo says his group will shift away from PVL and try to determine exactly which toxin or other mechanism in S. aureus kills white blood cells and allows the spread of CA-MRSA infection.
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Source:NIH/National Institute of Allergy and Infectious Diseases

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