Figure 6.20 Swine flu, United States, 2009–10. Values of the swash model parameters,
R0A and t–LE, for the first 39 weeks
(July–October) of each of the influenza seasons, 2004–5 to 2008–9, and for the first
swine flu season, 2009–10 at three geographical scales. (A) 122 cities comprising
the ILINet (influenza-like illnesses) PI (pneumonia–influenza) mortality dataset.
(B) Fifty states. (C) Ten United States Department of Health and Human Services