To catch a flu

When the US economy catches a cold the whole world sneezes. Many in finance employ some variation of this cliché to describe the interrelated nature of the global economy. But what happens when the US economy catches something a bit more severe? We may be about to find out. The US government declared a health emergency following the discovery of two dozen cases of the same strain of swine flu that had by Monday killed over 100 in Mexico. As Homeland Security chief Janet Napolitano counseled, th...