Fig 6. Transmission study–cohabitation plus direct transfer of secretions: Infection outcomes.

Animals are presented by cage groupings for the NiV-BD (A) and NiV-MY (B) infection groups. Donors were each housed with two recipients (arrows). Recipients received their first direct exposure dose at 6 days following infection of donors and a second dose at the time of euthanasia of donor ferrets; the infectious dose (total 50% tissue culture infective dose) for each exposure event is given with the day post infection (dpi) on which the donor was sampled, and, in parentheses, the corresponding day post commencement (dpc) of cohousing of recipients. Viral shedding by recipients was assessed over the course of the study; + denotes a positive sample. Dpi, days post-donor infection; NW, nasal wash; OS, oral swab; RS, rectal swab; #, sample positive by RT-PCR but virus isolation not attempted.