Swine flu fears seem to be calming, but should they be? “I would still propose that a pandemic is imminent because we are seeing the disease spread," Michael Ryan, WHO director of Global Alert and Response, said yesterday. The number of countries with the disease rose to 18, but it’s not spreading in a sustained way outside of North America. Mexico, meanwhile, thought that its outbreak might be stabilizing. "Each day there are fewer serious cases and the mortality has been decreasing," Health Minister Jose Angel Cordova said, but 11 Mexicans have died from the virus in the past 24 hours.