Skip to main content
. 2012 Apr 3;7(4):e33118. doi: 10.1371/journal.pone.0033118

Figure 8. Efficiency of transmission success is inversely correlated with level of illness in the ferret aerosol-donor. A.

Figure 8

. Comparison of percent transmissions detected by positive culture or positive RT-qPCR of nasal washes or throat swabs of recipients tested 1−3 days post-exposure, for each strain of pandemic H1N1 2009 influenza A virus. Lack of transmission of NC/99 is shown as left-hand column for comparison. B. Group mean weight change in the donors following intranasal infection with the three pandemic H1N1 strains. C. Photographs of whole lung tissue at necropsy (day 5) of donor ferrets infected with Cal/04 (C2, middle photo) or Cal/07 (C1 and C3). Cal/07-infected lungs display multiple regions of firm, dusky tissue representing pneumonitis confirmed by histology, not seen in Cal/04-infected lungs.