We used female New Zealand white rabbits weighing 2.1–2.7 kg each. We caged each rabbit separately at a temperature of 16–20°C with 12-h light:12-h dark cycles. We fed rabbits Purina lab diet ...

Upon examination of the other 14 rabbits, we found that one had a unilateral, white, mucopurulent nasal discharge (Fig. 1) and another was sneezing. These two rabbits had normal appetites ...