Volume 24, Number 12—December 2018
Research
Terrestrial Bird Migration and West Nile Virus Circulation, United States
Figure 7
![Model summarizing the general patterns of West Nile virus movement in the United States. Red, northward movement; teal, southward movement; dotted arrows, relationships that could not be confirmed in incident-controlled datasets because of an insufficient number of sequences.](/eid/images/18-0382-F7.jpg)
Figure 7. Model summarizing the general patterns of West Nile virus movement in the United States. Red, northward movement; teal, southward movement; dotted arrows, relationships that could not be confirmed in incident-controlled datasets because of an insufficient number of sequences.
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