Vertebrate Host Susceptibility to Heartland Virus
Angela M. Bosco-Lauth, Amanda E. Calvert, J. Jeffrey Root, Tom Gidlewski, Brian H. Bird, Richard A. Bowen, Atis Muehlenbachs, Sherif Zaki, and Aaron C. Brault
Author affiliations: Centers for Disease Control and Prevention, Fort Collins, Colorado, USA (A.M. Bosco-Lauth, A.E. Calvert, A.C. Brault); Colorado State University; Fort Collins (A.M. Bosco-Lauth, R.A. Bowen); US Department of Agriculture, Fort Collins (J.J. Root, T. Gidlewski); Centers for Disease Control and Prevention, Atlanta, Georgia, USA (B.H. Bird, A. Muehlenbachs, S.R. Zaki)
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Figure 1
Figure 1. Dose response of Heartland virus (HRTV)–infected interferon α/β/γ receptor–deficient (Ag129) mice. Mice of either sex were inoculated with 104–10° PFU of HRTV/0.1 mL of inoculum. Mice were observed daily for death through day postinoculation 24. A) Percentage survival. B) Dose-associated HRTV viremias determined by plaque assays on Vero E6 cells. Different groups of 5 mice inoculated with the same dose of HRTV were bled every third day. Thus, a decrease in viremia was observed for the 102 PFU dose inoculum group days postinoculation 5 and 6. Error bars indicate SD.
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