Understanding the persistence of measles: Reconciling theory, simulation and observation

Matt J. Keeling, Bryan T. Grenfell

Research output: Contribution to journalArticlepeer-review

121 Scopus citations


Ever since the pattern of localized extinction associated with measles was discovered by Bartlett in 1957, many models have been developed in an attempt to reproduce this phenomenon. Recently, the use of constant infectious and incubation periods, rather than the more convenient exponential forms, has been presented as a simple means of obtaining realistic persistence levels. However, this result appears at odds with rigorous mathematical theory; here we reconcile these differences. Using a deterministic approach, we parameterize a variety of models to fit the observed biennial attractor, thus determining the level of seasonality by the choice of model. We can then compare fairly the persistence of the stochastic versions of these models, using the 'best-fit' parameters. Finally, we consider the differences between the observed fade-out pattern and the more theoretically appealing 'first passage time'.

Original languageEnglish (US)
Pages (from-to)335-343
Number of pages9
JournalProceedings of the Royal Society B: Biological Sciences
Issue number1489
StatePublished - Feb 22 2002
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • General Immunology and Microbiology
  • General Environmental Science
  • General Biochemistry, Genetics and Molecular Biology
  • General Agricultural and Biological Sciences


  • Childhood disease
  • Extinctions
  • Mathematical models
  • Seasonality
  • Stochasticity


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