Retrovirus: Efforts to Characterize Host Response to HIV-1 Infection (M Montano & P Sebastiani) Host Immune Responses in HIV Infection (R D Allison & S Kottilil) Negative Single-Stranded RNA Virus: Host Immune Response to Influenza Virus (T M Moran & C B Lopez) Innate Recognition of Viral Infection and the Involvement of Autophagy (B Ramanathan & A Iwasaki) Hantavirus Infection and Innate Immunity (N Sen et al.) Positive Single-Stranded RNA Virus: Impact of Filovirus Infection upon Cellular Signaling Pathways (C F Basler) Host Signaling Responses to Coxsackievirus Infection (G Gao et al.) Double-Stranded RNA Virus: Host Signaling Responses to Reovirus Infection (D Pan et al.) Rotavirus Antagonism of the Host Innate Immune Response (J T Patton & M Barro) and other papers.