When a strain of influenza with pandemic potential struck in April, it was generally referred to as swine flu.Now,the name is A/H1N1 that has killed many people in the wold.A/H1N1 is a new flu that was first detected in April, 2009. An increasing number of cases are being reported in many country includ China.It's still uncertain at this time how severe this A/H1N1 outbreak will be in terms of illness and death compared with other influenza viruses. Because this is a new virus, most people will not have immunity to it, especially middle-aged man , and illness may be more severe and widespread as a result.Nowadays China has reported 9 confirmed A(H1N1) influenza cases. The government and health authorities are very much concerned about the health of Chinese students studying abroad amid the spread of A(H1N1) influenza.The government and health authorities has been urging citizens with symptoms of the flu -- a sharp increase in body temperature, headaches, muscular pains and breathing problems -- to visit their nearest medical center as soon as possible.