Michael Thrusfield writes in Veterinary Epidemiology (3rd Edition) about contiguous populations where individuals of the population meets with individuals of other populations thereby serving as mean to spread the infectious disease. Domestic animals such as cats that are not confined to a house belong to contiguous population. Cats move freely within cities, coming in contact with other urban, suburban and rural animals of their own and different species e.g. Bats.
(Visited 17 times, 1 visits today)