Before revision:  Aerosolized virus emitted by an infected person in an enclosed space will accumulate until virion emission and virion destabilization are balanced, resulting in a steady-state concentration C_{\infty found to trace out a single value of the calculated virion exposure , suggesting a universal minimum infective dose (MID) via aerosol .
After revision:  Virion exposure calculated for these events is found to trace out a single value of the calculated virion exposure , suggesting a universal minimum infective dose (MID) via aerosol .