Yellow/orange ooze from Apple pruning cut
I was doing some last pass pruning (touch up mostly) when I noticed this yellow/orange ooze coming out of a previous year's pruning cut. The ooze was still liquid and in the form of drops forming on the end grain of the cut edge of the branch. I also noted that the bark at this site was discolored for maybe 2" around the site of the ooze. The branch is 1-1/4" in diameter at the point of the infection. Other than this ooze and the bark discoloration, the rest of the branch seems fine and is leafing out well.
I assume the proper course of action here is to prune the infected branch off the tree, and dispose of the infected wood.
My question is, from this description, can anyone ID the disease here? And if so, how contagious is it? Should I be spraying the tree (and other nearby trees) with something?