Worried Turks have been rushing to hospital to be tested for bird flu as the disease spreads across the country. The condition of some of those infected with the potentially lethal H5N1 strain of the virus has deteriorated. At least two people in Turkey have already died. Meanwhile the mass cull of poultry continues.The UN’s Food and Agriculture Organisation is worried about how things might develop. Its chief veterinary officer is Dr Joseph Domenech. “We think it is a very worrying situation because we have many outbreaks and this number of outbreaks means that there has been virus circulation for a while,” he said. “It was not a very recent introduction.” However the World Health Organisation has tried to reassure people that there is no reason to believe for the moment that the virus is becoming more easily spread among humans. Various European countries have stepped up controls to fight the disease.