A history of Panton-Valentine leukocidin (PVL)-associated infection protects against death in PVL-associated pneumonia.

Abstract:

:Panton-Valentine leukocidin (PVL) is a Staphylococcus aureus toxin associated with skin and soft-tissue infections (SSTIs) and life-threatening necrotizing pneumonia in humans. Recent reports have demonstrated that neutralizing antibody to PVL is not protective against SSTI recurrence, thus raising a controversy about the expected clinical benefits from the use of PVL as a vaccine target. To investigate the impact of pre-existing immunity to PVL on the outcome of necrotizing pneumonia, we conducted a retrospective study of 114 cases and searched for an association between the history of PVL-associated infection and outcome. Death and severity factors, such as the need for mechanical ventilation and inotrope support, were significantly less frequent in patients with prior PVL-associated infection than in those without. These findings indicate a protective role of PVL-directed immunity in severe systemic PVL-associated disease, suggesting that anti-PVL vaccine could provide strong clinical benefits in this setting.

journal_name

Vaccine

journal_title

Vaccine

authors

Rasigade JP,Sicot N,Laurent F,Lina G,Vandenesch F,Etienne J

doi

10.1016/j.vaccine.2011.04.033

subject

Has Abstract

pub_date

2011-06-06 00:00:00

pages

4185-6

issue

25

eissn

0264-410X

issn

1873-2518

pii

S0264-410X(11)00568-8

journal_volume

29

pub_type

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