Differential Virulence of West Nile Strains for American Crows
Aaron C. Brault*† , Stanley A. Langevin*, Richard A. Bowen‡, Nicholas A. Panella*, Brad J. Biggerstaff*, Barry R. Miller*, and Nicholas Komar*
Author affiliations: *Centers for Disease Control and Prevention, Fort Collins, Colorado, USA; †University of California, Davis, California, USA; ‡Colorado State University, Fort Collins, Colorado, USA
Figure 2. Survivorship of eight American Crows, each injected with 3.2 log10 PFU of NY99, KEN, or KUN virus. An additional eight crows were injected with a high dose (hd) of the KEN virus (3.8 log10 PFU). Crows were monitored daily for signs of disease through 14 dpi. No deaths were found within the control group (data not shown).
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