Gamma interferon (IFN-γ) concentrations in blood, but not in lungs, rose significantly at 24 to 48 h after murine pulmonary infection with virulent pneumococci. In contrast, infection with avirulent pneumococcal strains produced minimal rises in serum IFN-γ concentrations. Compared with that of immunocompetent mice, mortality was appreciably increased after pulmonary infection of IFN-γ gene knockout mice, suggesting a protective role for IFN-γ in host response to pneumococcal disease.
|Original language||English (US)|
|Number of pages||3|
|Journal||Infection and Immunity|
|State||Published - 1997|
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