Oh, alcohol is very effective against bacteria, only if it is poured directly on the wound. Is that what you were thinking? ‘If it is good ON a wound, then wouldn’t it be good INSIDE the body with the wound?’.... but our immune systems are more complicated than that.
Immune response is reliant on our blood and lymphatic system creating and bringing special cells to kill bacteria that invades us when our skin is broken. The consumption of alcohol, especially chronic drunkenness, lowers our bodies ability to create the components of our blood cells that fight infection. We want happy leukocytes.