Staph means staphylococcus which is a bacterium. Its one of the species is MRSA. It is acquired from the hospital and from the community by skin to skin contact. This is contagious. All insect bites including flea cause inflammation and itching leading to infection. The staph bacteria can attack very easily on this bite. So, the staph is not transmitted by the flea bite but after the flea bite conditions become favorable for staph infections.