FIGURE 3.

Reactivity of wild ruminant samples collected between 2017 and 2020 towards the receptor‐binding domains of the coronaviruses SARS‐CoV‐2 and SARS‐CoV‐1 as measured by indirect multispecies ELISAs. The cut‐off for positivity (≥ 0.3) is marked by a dashed horizontal line, and the mean values are shown in blue. A cattle sample taken 20 days after experimental SARS‐CoV‐2 infection (dark red) and a cattle sample taken subsequent to natural SARS‐CoV‐2 infection (orange) were used as virus‐specific controls.