Per the CDC
Use your preferred water temperature – cold or warm – to wash your hands. Warm and cold water remove the same number of germs from your hands. The water helps create soap lather that removes germs from your skin when you wash your hands. Water itself does not usually kill germs; to kill germs, water would need to be hot enough to scald your hands.
I eat shrimp tails and will sometimes eat the shell as well, if the shrimp has been fried. Shrimp tails have so much flavour so will eat them regardless of preparation.