From: Endemic and epidemic dynamics of cholera: the role of the aquatic reservoir
Symbol | Description |
---|---|
State Variables | |
S | number of susceptibles |
I | number of infected |
B | concentration of toxigenic V. cholerae in water (cells/ml) |
Parameters | |
H | total human population |
n | Human birth and death rates (day-1) |
a | rate of exposure to contaminated water (day-1) |
K | concentration of V. cholerae in water that yields 50% chance of |
catching cholera (cells/ml) | |
r | rate at which people recover from cholera (day-1) |
nb | growth rate of V. cholerae in the aquatic environment (day-1) |
mb | loss rate of V. cholerae in the aquatic environment (day-1) |
e | contribution of each infected person to the population of V. cholerae |
in the aquatic environment (cell/ml day-1 person-1) |