C	Species concentration, cells.m−3
D	Binary diffusion coefficient, m2.s−1
D 0	Scaling Factor, m2.s−1
k 1	Kinetic rate constant for infection, cells−1.m3s−1
k 2	Kinetic rate constant for virus propagation, s−1
k 3	Kinetic rate constant for virus clearance, s−1
k 4	Kinetic rate constant for cells accumulation, cells−1.m3s−1
L 0	Pharynx length, m
t	Time, s
u 1	Virus concentration, dimensionless
ui 0	Initial virus concentration, dimensionless
v 0	Convective flow velocity, m.s−1
X 1	Ratio of infected cells to initial cells
X 2	Degree of conversion of uninfected cells to infected cells
Y	Yield of virus per infected cell
z	Axial coordinate, m
Greek Letters
η	Dimensionless length
τ	Dimensionless time
Subscript
0	Initial Conditions
infc	Infected cells
sub Substrate
unc	Uninfected cells
vir	Virus