A DEADLY plague could sweep across Europe, doctors fear, after an outbreak of a virus in Ukraine plunged the country and its neighbours into a state of panic. A cocktail of three flu viruses are reported to have mutated into a single pneumonic plague, which it is believed may be far more dangerous than swine flu. The death toll has reached 189 and more than 1 million people have been infected, most of them in the nine regions of Western Ukraine. President of Ukraine Viktor Yushchenko has called in the World Health Organisation and a team of nine specialists are...