ANKARA — One of two boys who tested positive for bird flu in Turkey has now begun showing symptoms, Turkish officials said on Thursday as experts cautioned the threat of a pandemic is steadily growing. The board of the World Bank endorsed $500 million in aid to help countries deal with H5N1 avian influenza, while U.S. health officials dispersed $100 million for state and local preparedness. The virus, while it is spreading and changing, still poses no immediate threat of a pandemic, but experts stress it could do so at any time. They say it is vital to prepare emergency response teams, stockpile what drugs there are and build up surveillance networks to detect new outbreaks. The H5N1 virus has been found in wild birds and poultry across large parts of Turkey, particularly in poor villages stretching from Istanbul, on the borders of Europe, to Van near the Iranian and Iraqi borders. It has killed three children in Turkey and the World Health Organization says a total of 18 people have been infected. All had close contact with sick chickens. Globally H5N1 has infected 147 people and killed 78 of them, according to the latest […]