pneumonia

Interferons and secondary pneumonia after influenza

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Now that we have discussed influenza pathogenesis in humans and the innate immune defenses, we can tackle the conclusion that type I IFN mediates the development of secondary bacterial pneumonia in mice. Secondary bacterial pneumonia occurs after the patient has begun to recover from influenza infection, and often influenza virus can no longer be isolated. …

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Pathogenesis of influenza in humans

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When influenza virus is introduced into the respiratory tract, by aerosol or by contact with saliva or other respiratory secretions from an infected individual, it attaches to and replicates in epithelial cells. The virus replicates in cells of both the upper and lower respiratory tract. Viral replication combined with the immune response to infection (which …

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