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 . The MID implied by our analysis is comparable to the measured MIDs for influenza A (H2N2), the virus responsible for the 1957-1958 asian flu pandemic.
After 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 that is comparable to the measured MIDs for influenza A (H2N2), the virus responsible for the 1957-1958 asian flu pandemic.