Volume 12, Number 7—July 2006
Research
Epidemiologic and Molecular Analysis of Human Tularemia, United States, 1964–2004
Figure 1
![](/eid/images/05-1504-F1.gif)
Figure 1. Geographic distribution for type A (red circles) and type B (yellow circles) Francisella tularensis isolates from humans, contiguous United States, 1964–2004. Each circle represents 1 isolate. Isolates were plotted randomly within the county of exposure. The 100th meridian is indicated by the black line transecting the United States. County of exposure was known for 198 (63%) isolates.
1These authors contributed equally to this article.
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