IFNA1 and infection: The first peak, which occurred at about 6 days after the start of viremia, was transient and showed an increase in IFN-α, IL-15, TNF-α, IP-10, and MCP-1, and the second peak, associated with production of IL-6, IL-8, IL-10, IL-18, and IFN-γ, was detected 7 to 12 days post infection [118].