Prior to an April 2009 research trip to the US, the authors were marginally concerned over the outbreak of swine flu in Queens, New York. The authors also have associates in Mexico.
The speed with which we can now record and share global data at simple and accessible level is historically unparalleled, and this recent possible pandemic has brought this fact into focus, perhaps more clearly than ever before.
Live update of swine flu cases across the globe. Image from google maps