Volume 13, Number 12—December 2007
Dispatch
Seroconversion in Wild Birds and Local Circulation of West Nile Virus, Spain
Figure 2

Figure 2. Evolution of West Nile virus (WNV) antibody titers in common coots captured on >4 occasions in the same winter, Doñana, Spain. Open circles and dashed lines indicate birds captured during 2004–2005, and solid circles and continuous lines indicate birds captured during 2005–2006.
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