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. 1985 Jan 21;112(2):403-27.
doi: 10.1016/s0022-5193(85)80294-0.

Nearly one dimensional dynamics in an epidemic

Nearly one dimensional dynamics in an epidemic

W M Schaffer et al. J Theor Biol. .

Abstract

The incidence of measles in New York City and Baltimore was studied using recently developed techniques in nonlinear dynamics. The data, monthly case reports for the years 1928-1963, suggest almost two dimensional, chaotic flows whose essential attributes are captured by one dimensional, unimodal maps. The effects of noise, inevitable in ecological and epidemiological systems are discussed.

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