With the making of Rage, the Mexican film industry decided to do what the British have done for years. Get a Hollywood name for the lead and set the film in London with a British cast. That extra bounce of a name from the movie capital is good for box office.
In this case they got two. Glenn Ford as a dissolute doctor and Stella Stevens as a working girl are in Mexico at a construction site, each practicing their own trade when Ford is bitten by a rabid dog.
It's a simple story, they are out in the wilds and Ford has to reach civilization and fast before the case becomes incurable. With Stevens's help he sets out on the journey always as a medical professional looking out for the telltale signs of his condition going beyond the point of medical help.
I saw Rage in theater back when it was released and after some showings on television it seems to have disappeared. Peter Ford's biography of his dad tells little about it.
Ford and Stevens turn in some fine performances. Maybe this will be unearthed and put out on DVD soon.