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Infectivity

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Title: Infectivity  
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Subject: HIV, Antibody-dependent enhancement, Protein Misfolding Cyclic Amplification, Verotoxin-producing Escherichia coli, Indoor bioaerosol
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Infectivity

In epidemiology, infectivity is the ability of a pathogen to establish an infection. More specifically, infectivity is a pathogen's capacity for horizontal transmission that is, how frequently it spreads among hosts that are not in a parent-child relationship. The measure of infectivity in a population is called incidence.

Infectivity has been shown to positively correlate with virulence. This means that as a pathogen's ability to infect a greater number of hosts increases, so does the level of harm it brings to the host.[1]

A pathogen's infectivity is subtly but importantly different from its transmissibility, which refers to a pathogen's capacity to pass from parent to child.

See also

References

  1. ^ Stewart, AD; Logsdon, JM; Kelley, SE (April 2005). "An empirical study of the evolution of virulence under both horizontal and vertical transmission". Evolution 59 (4): 730–739.  

External links

  • Definition


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