Fig. 1: SARS-CoV-2 viral RNA in white-tailed deer across the study locations.
From: SARS-CoV-2 infection in free-ranging white-tailed deer
a, The nine study sites were spread across a 1,000-km2 landscape of varying population density in northeast Ohio. Darker shading corresponds to higher human population density (people per square mile). Sampling sites 1, 2, 5, 7 and 9 are in close proximity to human populations and are indicated as urban sites with an asterisk in b, c. b, Nasal swabs from white-tailed deer were tested for the presence of SARS-CoV-2 viral RNA using real-time reverse transcriptase PCR (rRT–PCR). Estimates of amount of SARS-CoV-2 viral RNA are represented by (40 − Ct value of the N1 rRT–PCR target). Negative samples are represented with a value of zero. c, The prevalence of SARS-CoV-2 in the white-tailed deer at each study site was estimated using rRT–PCR. The proportion of positive samples is shown with Clopper–Pearson exact 95% confidence interval bars. The number of samples collected at each site is indicated in parentheses. Map created with ArcMap v.10.8.1, using base layers and data from Esri, Garmin, OpenStreetMap, GIS user community, Infogroup and the US Census Bureau.
