hi i am from china,in china there are so many people think they were infect a hiv but they Check is negative,there are so many symptoms ,some people are going to Hospital Cure Disease,they think they were infect by a negative hiv, or some Unknown viruses , They are experiencing the mentality of a vicious circle: the time of unprotected intercourse, began to suspect that he got AIDS, after the body appears regularly, and various small symptoms, become more sceptical fear. Start looking for fear of a "online" crowd gathered the msn, describing symptoms, contrast, increasingly fear. these people are always High Educated,and once in a while high-risk sex,These people cd4 is more less than normal, they think these Unknown viruses was infect by sweat or Saliva,they have Symptoms be similar with aids,in china experts said that there Symptoms was From fear,if there was exist new viruses,that must be worldwide,and Developed countries will know this,and Do research but no country find this,but no report what do you think about it , there Phenomenon is normal or not,so is USA have this Phenomenon,there are so many people want know?please help me.