V. Mendez, EPIDEMIC MODELS WITH AN INFECTED-INFECTIOUS PERIOD, Physical review. E, Statistical physics, plasmas, fluids, and related interdisciplinary topics, 57(3), 1998, pp. 3622-3624
The introduction of an infective-infectious period on the geographic s
pread of epidemics is considered in two different models. The classica
l evolution equations arising in the literature are generalized and th
e existence of epidemic wave fronts is revised. The asymptotic speed i
s obtained and improves previous results for the Black Death plague.