Hello Drs,

I wanted to run a question by you and perhaps get some reassurance.  I live in Washington, D.C. and last evening I bought a bottle of water and opened the water and drank from it.  I drank from it again when I got home and as I was closing the bottle I noticed a long split in the plastic bottle cap on the side of the cap but horizontally near the top, so the top lifts up a bit along the split if that makes sense (the split is almost half of the circumference of the cap). When I lift the cap at the part that split it seems there could be a little access to the inside of the bottle. I’m not sure if it was like this before I purchased the bottle or if it was a defective cap.  I am mainly concerned if someone might have contaminated the bottle and about any risk of HIV transmission if someone contaminated the bottle with saliva or blood from a person with HIV.  The bottle of water was in a fridge when I bought it. I am also unsure if a bottle of water would be considered an airtight container so if HIV could survive in it?  I also was wondering if there could be any risk of hepatitis B or C transmission  (I am immunized to B).  I might have minor cuts in my mouth but I am not sure.  Thank you so much for your help and time.