Not a joke... we used to use eardrops with vinegar for outer ear infections...and when we were doing wound care for our diabetics, we got resistance of germs and fungus in the wounds so switched to vinegar dressings. We also used to use vinegar douches for ladies with yeast infections.
the ear infections in diabetics can be nasty...one problem is cleaning them twice a day to drain. In the good old days we could hospitalize them or do home visits.
but once the fungus goes inward, vinegar won't work...