Hi. (1) I\'d like to know if there are any documented cases whereby there was HIV infected blood on a glass and someone got accidentally cut by the glass and got infected with HIV? What other diseases can be possibly spread by this? (2) What about knives? If someone gets cut by a knife with HIV blood on it will the person get HIV? Are there any documented cases of this happening? What other diseases can be possibly spread by this? (3) If lets say someone on the street accidentally fell down and is bleeding profusely, and i help the person and my hands are covered with his blood, will i get diseases from his blood (assuming that in case 1 i have an open wound on my hand, and case 2 i do not have open wound on my hand)? what are the chances of catching diseases from case 1 and 2? are there any documented cases of this incidents whereby the passerby got infected with diseases? Thank you very much for your reply.