Levels of MCP2, TGF-β1, IFN-α, IFN-β, IFN-γ, IL1-α IL1-β, IL-2, IL-5, IL-6, IL-8, IL-10, IL-12 p35, IL-12 p40, OAS, PKR, TNF-α, MX-1, and VCAM were assessed using commercial ELISAs following manufacturer protocols in sera of animals challenged at early times (7, 10 and 14 days) post Pret4Δ9GL virus infection. This evidence concerns the gene IL5 and viral infectious disease.