Table 2 Meaning of Variables and Parameters
Symbol | Variables | UNITS |
|---|---|---|
M 1 | Mean intensity of taeniasis in humans | Â |
M 2 | Mean intensity of cysticerci in the pigs | Â |
M 3 | Mean intensity of cysticerci in humans | Â |
P 1 | Prevalence of adult parasites (taenias) | Â |
P 2 | Prevalence of larval parasites (cysticerci in pigs) | Â |
P 3 | Prevalence of larval parasites (cysticerci in humans) | Â |
E | Number of tapeworm eggs | Â |
| Â | PARAMETERS | Â |
k 1 | Inverse measure of aggregation of T. solium | Â |
k 2 | Inverse measure of aggregation of cysticerci | Â |
β 1 | Rate of transmission of adult parasites |  |
β 2 | Rate of transmission of larvae to pigs |  |
β 3 | Rate of transmission of larvae to humans |  |
D 1 | Proportion of parasites acquired by the definitive host which survive to reach sexual maturity | Â |
D 2 | Proportion of parasites acquired by the intermediate host which survive to reach infectivity | Â |
D 3 | Proportion of parasites accidentally acquired by human host which survive to reach infectivity | Â |
T 1 | Time period from entry into the definitive host to reproductive maturity when worms begin egg production | year |
T 2 | Time period from entry into the intermediate host (pig) to the development of the infective stage | Year |
T 3 | Time period from entry into the human host to the development of the infective stage | year |
H 1 | Density of humans that can be infected with T. solium | Â |
H 2 | Density of pigs that can be infected with cysticerci | Â |
H 3 | Density of humans that can be infected with cysticerci | Â |
b 1 | Rate of mortality of the definitive host (humans) | year−1 |
b 2 | Rate of mortality of the intermediate host (pigs) | year−1 |
α 1 | Severity of density-dependent constraints (taenia) | year−1 |
α 2 | Severity of density-dependent constraints (pigs) | year−1 |
α 3 | Severity of density-dependent constraints (humans) | year−1 |
λ | Rate of fecundity | year−1 |
μ 1 | Rate of mortality of the adult parasite | year−1 |
μ 2 | Rate of egg mortality | year−1 |
μ 3 | Rate of larvae mortality (pigs) | year−1 |
μ 4 | Rate of larvae mortality (humans) | year−1 |