Rectal temperature and respiratory rate measured 48–72 hours post inoculation (i.e. peak of clinical signs).

<p>In calves experimentally inoculated with different doses of viable <i>C. psittaci,</i> both rectal temperature (panel A) and respiratory rate (panel B) were significantly increased while no significant changes were seen in control calves. Data are given as Box-and Whisker Plots based on 2 or 3 measurements per calf in controls or infected animals, respectively. Different letters indicate significant differences between groups at given <i>P</i>-level (multiple range test).