Measles - Rhinolophus ferrumequinum (greater horseshoe bat)

Measles virus (MV) is highly contagious virus that leads infant death worldwide. Humans are the unique natural reservoir for this virus. MV infection is characterized by virus-induced immune suppression that can lead to increased susceptibility to secondary bacterial and viral infections. The P, V and C proteins act as virulence factors to suppress innate immune response in host by inhibiting signaling for both type I IFN induction and JAK/STAT-mediated interferon-stimulated gene (ISG) induction. Moreover, H protein expressed on viral particles and binding to SLAM or CD46, as well as N protein liberated from infected cells and interacting with Fc-gamma R, causes an inhibition of IL-12 synthesis in dendritic cells. IL-12 is a key cytokine inducing cellular immune responses to protect host from the harm caused by pathogenic infections.