This broad term includes space for shelter, space to live in, and space to circulate in, in order for an organism to satisfy its particular needs. The space may be microscopic or, in comparison, humongous in volume and can change during the life cycles of the species involved. Although an individual organism can do without a means to reproduce itself, a species cannot survive without it. The type of reproduction, the number of reproductive cycles, and the interval between each cycle can differ depending on the species involved. Infectious Agent - Host relationship Like other organisms, both infectious agents and their hosts seek to satisfy their needs in order to survive.
Hosts actually serve as space to live in and sometimes as sustenance for infectious agents.
The relationship between the two organisms could be beneficial for both partners or one sided. Disease , the apparition of symptoms , is only one possible outcome of the relationship and is the result of conflict between the two partners. The actions of the infectious agent and the reaction of the host are both responsible for the symptoms. Members of the human species have used their imagination and paranoia to explain natural phenomena such as earthquakes and emerging infections as a result of sexual misconduct or the breakdown of human morals . Using their wild imagination and poetic license, authors describe outlandish situations involving infections in their books, articles, and film scripts.