The individual differences observed are relatively modest, for example the fold change of expression (vs. mock) of the lectin-like receptor Klra12 (also known as Ly49L, Gene ID: 16630) is 1.75 during WT Nig06 virus infection and 2.46 during the ΔF2 Nig06 virus infection. This evidence concerns the gene KLRA1P and viral infectious disease.