Women wear masks as a precaution against flu in the western Ukrainian city of Lviv, Wednesday, Nov. 4, 2009. The death toll from flu has climbed to 71 since the outbreak struck last week in the western city of Ternopil, Prime Minister Yulia Tymoshenko said. Blood tests have yet to determine how many of these deaths were from the new and aggressive H1N1 strain. But the WHO said in a statement on Tuesday that most flu cases in Ukraine can be assumed to be H1N1, "as the pandemic virus has rapidly become the dominant influenza strain worldwide." AP Photo logo AP Photo 2 weeks ago

Women wear masks as a precaution against flu in the western Ukrainian city of Lviv, Wednesday, Nov. 4, 2009. The death toll from flu has climbed to 71 since the outbreak struck last week in the western city of Ternopil, Prime Minister Yulia Tymoshenko said. Blood tests have yet to determine how many of these deaths were from the new and aggressive H1N1 strain. But the WHO said in a statement on Tuesday that most flu cases in Ukraine can be assumed to be H1N1, "as the pandemic virus has rapidly become the dominant influenza strain worldwide."