I remember this spot running regularly during the daytime when I stayed with my aunt while my mom was at work. It must have been around 1971 or 1972, and I assume the campaign was a result of increased (but still non-lethal) infections related to that trendy new sexual revolution thingy. Frankly, it’s amazing that something like this could air at all in the early 1970s considering that ten years later, Ronald Reagan couldn’t even bring himself to utter the term “AIDS”.
What a delight it must have been for parents to hear a six- or seven-year-old me running around the house singing this song. And by the way, I love that VD-stricken librarian.