FIG. 3.

Panel A, changes in normalized average middle ear pressure (± standard deviations [sd]) over time in chinchillas infected with either 10⁶ or 10⁷ PFU RSV strain A2 via intranasal delivery. Middle ear pressure (MEP) was assessed by tympanometry. Panel B, relative percentage of ears that demonstrated reduced middle ear pressure relative to baseline measurements over time in cohorts that received either 10⁶ or 10⁷ PFU RSV. Values on bars indicate the number of ears demonstrating a reduced middle ear pressure over the total number of ears evaluated.