Remember a few years ago when there were news reports about over use of antibiotics? I am not saying this is connected to the below post. Be careful to always clean and properly bandage cuts.
This study is not conclusive. So it is not excepted medical fact but in the mean time an ounce of prevention is worth a pound of cure:
http://www.medpagetoday.com/PublicHealthPolicy/PublicHealth/tb2/1896