With Europe facing the most serious flu epidemic in years, the World Health Organisation is warning the public, specially the sick and elderly, to do an inoculation now. Health experts warn that this winter's outbreak could be severe as the 1989 epidemic, who killed 25,000 people in Britain only. WHO has stressed the importance in vaccination, and several countries are already taking precautions to ensure that those at high-risk categories such as diabetics and those with heart or lung complaints are vaccinated. Nearly all precious strains of flu are known to originate in China and Far East, and whereas in the past, infection spread slowly across the world, in these days of mass air travel, rapid global infection is a great threat. Sweden has reported cases of para-influenza, effecting mainly children, and Danish doctors had recorded 1,500 cases of flu in the past week. Tìm giúp mình 10 lỗi sai trong đoạn văn này với ạ. Cảm ơn mọi người nhiều