FIG 7.
Virus shedding in inoculated and contact dogs. Dogs were intranasally inoculated with 107 EID50s of the indicated viruses. At 1 dpi, three contact dogs were introduced to assess transmission. Nasal swabs were collected from inoculated and contact dogs exposed to H3N8-41X (A), H3N8-61X (B), H3N2-41X (C), or H3N2-61X (D) CIV every day. Viruses were titrated by EID50 assay. Each color bar represents the viral titers from an individual animal. The dashed black horizontal lines indicate the lower limits of detection.