10 days ago, a friend drunk one bottle of cow yogurt mouth to mouth (which mixed with oligosaccharide, milk , water, citric acid, lactic acid and so on) , not drunk the
yogurt up, then put the left half bottle of cow
yogurt on the table. 5 minutes later, I drunk up the half bottle of cow yogurt he left (mouth to mouth). He and me both had canker sore and a little bleeding that day. He was tested hiv+ yesterday. My questions are as follows:
1.