“…There is a growing body of evidence of the role of various chemokine and chemokine receptor polymorphisms in different outcomes after infection with viruses, including HIV, HCV, and West Nile virus (11). Also, polymorphism of other immune system molecules, such as cytokines and pathogen-associated pattern recognition receptors, has an important role in determining the outcome of various infectious diseases (12)(13)(14). Importantly, major histocompatibility complex (MHC) molecules are the most polymorphic genes in vertebrates.…”