Table 1. The five dynamic single-season models for West Nile virus along with their epidemiological features (FR = reservoir frequency dependence, T = transmission probabilities, VI = viral incubation period, VT = vertical transmission, RD = reservoir death from virus, RI = reservoir loss of immunity).

Model Description Epidemiological Features
(Lord and Day 2001) System of eight differential equations
Three compartments for vectors
Eight compartments for reservoirs
FR,T,VI, RD, RI, RL
Age structure
States of vectors and reservoirs
(Thomas and Urena 2001) System of six difference equations
Three compartments for vectors
Three compartments for reservoirs
Converted to continuous time in (Lewis et al. 2006)
MA,VI, VT,RI
States of vectors and reservoirs
(Wonham et al. 2004) System of seven differential equations
Four compartments for vectors
Three compartments for reservoirs
FR,T,VI, RD, RI, RL
State of vector
Age structure for Vector
(Bowman et al. 2005) System of four differential equations
Two compartments for vectors
Two compartments for reservoirs
FR, RD
(Cruz-Pacheco et al. 2005) System of five differential equations
Two compartments for vectors
Three compartments for reservoirs
FR,T, VT,RD, RI
Age structure