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Table 2 Meaning of Variables and Parameters

From: Mathematical model of the life cycle of taenia-cysticercosis: transmission dynamics and chemotherapy (Part 1)

Symbol Variables UNITS
M 1 Mean intensity of taeniasis in humans  
M 2 Mean intensity of cysticerci in the pigs  
M 3 Mean intensity of cysticerci in humans  
P 1 Prevalence of adult parasites (taenias)  
P 2 Prevalence of larval parasites (cysticerci in pigs)  
P 3 Prevalence of larval parasites (cysticerci in humans)  
E Number of tapeworm eggs  
  PARAMETERS  
k 1 Inverse measure of aggregation of T. solium  
k 2 Inverse measure of aggregation of cysticerci  
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  
D 2 Proportion of parasites acquired by the intermediate host which survive to reach infectivity  
D 3 Proportion of parasites accidentally acquired by human host which survive to reach infectivity  
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  
H 2 Density of pigs that can be infected with cysticerci  
H 3 Density of humans that can be infected with cysticerci  
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