Outbreaks of Swine Flu have now been confirmed in seven countries; the Centers for Disease Control have confirmed 64 cases in the US. Different countries are imposing different precautions. So far, the only deaths reported have been in Mexico. Yesterday, the World Health Organization raised its pandemic threat level from 3 to 4. A full-scale pandemic would register 6. Laurie Garrett, senior fellow at the Council on Foreign Relations, is author of The Betrayal of Trust: The Collapse of Global Public Health.