Critical community size
The critical community size (CCS) is the minimum size of a closed population within which a human-to-human, non-zoonotic pathogen can persist indefinitely.[1]
When the size of the closed population falls below the critical community size level, the low density of infected hosts causes extinction of the pathogen.[2] This epidemiologic phenomenon was first identified during measles outbreaks in the 1950s.[1]
See also
- Compartmental models in epidemiology
- Epidemic model
- Epidemiology
- Force of infection
- Mathematical modelling of infectious disease
- Transmission risks and rates
Notes and references
External links
- The Collection of Biostatistics Research Archive
- 'Epidemiology' – In: Philip S. Brachman, Medical Microbiology (fourth edition), US National Center for Biotechnology Information
- Monash Virtual Laboratory - Simulations of epidemic spread across a landscape
- People's Epidemiology Library
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