Seir (, "Rough, hairy"). It is sometimes used as an alternative term for a goat, as in Seir La'Azazel (???? ?????? - scapegoat).

A SEIR Model for Control of Infectious Diseases with Constraints
Global stability for the SEIR model in epidemiology.
Global dynamics of a SEIR model with varying total population size
Global Dynamics of an Seir Epidemic Model with Vertical Transmission
Global dynamics of an SEIR epidemic model with saturating contact rate
Infinite subharmonic bifurcations in a SEIR epidemic model
Lyapunov functions and global properties for SEIR and SEIS epidemic models
Global Stability for Delay SIR and SEIR Epidemic Models with Nonlinear Incidence Rate
Global stability of a SEIR epidemic model with infectious force in latent, infected and immune period
Statistical inference in a stochastic epidemic SEIR model with control intervention: Ebola as a case study.