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."
As a precaution, schools and universities across the country will remain closed this week, and officials urged people in western Ukraine to travel only when necessary and stay away from public places.
Slovakia, which lies on Ukraine's western border, closed two of its five border crossings with Ukraine to keep the infection from spreading. In Russia, where there have been 14 confirmed swine flu deaths, the Health Ministry said it would examine anyone crossing the border from Ukraine and quarantine people with severe symptoms...