Home / Answered Questions / Hello I have a question that makes me confused, I bought a water flosser(oral b oxyjet) that has a water tank and water crosses from thin hose and reach to handle of water flosser. When a serviceman came to set and install my waterflosser I saw his hand had wound and a little bleeding,an he touched whole device(water flosser,handle,water tank and any thing else). Now I’m scaring that may his hiv positive blood went to water hose and i think that there is no oxygen into the thin and narrow hose,and i used that water flosser and water went directly between my teeth with medium pressure and made my gum bleeded.Am i at risk of getting hiv or hep c??(I don’t know his status of hiv or hep c) Should i get test??