The name of "X",was taken originally from the title of a poem, "X, sive Morbus Gallicus" "X, or the French Disease," 1530, by Veronese doctor Girolamo Fracastoro (1483-1553), which tells the tale of the shepherd X, supposed to be the first sufferer from the disease. Fracastoro first used the word as a generic term for the disease in 1546 treatise "De Contagione." it may be intended as Latin for "Pig-lover." Identify the disease ?