The impact of a physical geographic barrier on the dynamics of measles.

Journal Article (Journal Article)

Spatial-temporal patterns of measles incidence reflect the spatial distribution of human hosts. The heterogeneous spatial distribution of communities has been shown to introduce spatially dependent temporal lags in the timing of measles incidence. Incidence patterns reflect internal dynamics within a community and coupling of communities through the movement of infectious individuals. The central role of human movement in coupling dynamics in separate communities suggests that physical geographic barriers to movement should reduce spatial-temporal correlation. We examine measles dynamics in Maryland and Pennsylvania during the period of 1917-1938. The central feature of interest is the Chesapeake Bay, which separates Maryland into two distinct regions. We find that correlation of measles incidences in communities separated by the bay is reduced compared to communities not separated by the bay, suggesting the bay acted as a barrier to human movement during this time sufficient to decouple measles dynamics in Maryland counties.

Full Text

Duke Authors

Cited Authors

  • Vora, A; Burke, DS; Cummings, DAT

Published Date

  • May 2008

Published In

Volume / Issue

  • 136 / 5

Start / End Page

  • 713 - 720

PubMed ID

  • 17662170

Pubmed Central ID

  • PMC2870857

International Standard Serial Number (ISSN)

  • 0950-2688

Digital Object Identifier (DOI)

  • 10.1017/S0950268807009193


  • eng

Conference Location

  • England