Animals were observed twice-daily for 28 days. Samples include blood, cerebrospinal fluid, feces, urine, bronchoalveolar lavage and mucosal swabs. These samples were collected at pre-exposure and post-exposure days and necropsy. Physical examination and imaging (radiography, PET, computed tomography) occurred 7 days prior to exposure and a week after exposure. Following the euthanization of the animals, samples from the left cranial and caudal lung lobes were processed in the media and analyzed. Right lung lobes contained in a fixative to preserve the samples.