Nearly one dimensional dynamics in an epidemic.
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.
D002644:Chickenpox / Q000453:epidemiology; D002648:Child; D004196:Disease Outbreaks / Q000453:epidemiology*; D004812:Epidemiologic Methods; D006801:Humans; D008396:Maryland; D008457:Measles / Q000453:epidemiology*; D008954:Models, Biological; D009107:Mumps / Q000453:epidemiology; D009519:New York City; D010507:Periodicity; D013029:Space-Time Clustering