https://wikimd.org/index.php?action=history&feed=atom&title=Infectivity Infectivity - Revision history 2026-05-10T18:26:48Z Revision history for this page on the wiki MediaWiki 1.44.2 https://wikimd.org/index.php?title=Infectivity&diff=6531790&oldid=prev Prab at 01:31, 19 March 2025 2025-03-19T01:31:44Z <p></p> <table style="background-color: #fff; color: #202122;" data-mw="interface"> <col class="diff-marker" /> <col class="diff-content" /> <col class="diff-marker" /> <col class="diff-content" /> <tr class="diff-title" lang="en"> <td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">← Older revision</td> <td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">Revision as of 01:31, 19 March 2025</td> </tr><tr><td colspan="2" class="diff-lineno" id="mw-diff-left-l21">Line 21:</td> <td colspan="2" class="diff-lineno">Line 21:</td></tr> <tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; 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font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;">{{No image}}</ins></div></td></tr> </table> Prab https://wikimd.org/index.php?title=Infectivity&diff=691017&oldid=prev Prab: 1 revision imported 2019-09-01T23:12:38Z <p>1 revision imported</p> <p><b>New page</b></p><div>In [[epidemiology]], &#039;&#039;&#039;infectivity&#039;&#039;&#039; is the ability of a [[pathogen]] to establish an infection. More specifically, infectivity is a pathogen&#039;s capacity for [[horizontal transmission]] that is, how frequently it spreads among [[host (biology) | host]]s that are not in a parent-child relationship. The measure of infectivity in a population is called [[incidence (epidemiology)|incidence]].<br /> <br /> Infectivity has been shown to [[correlation| positively correlate]] with [[virulence]]. This means that as a pathogen&#039;s ability to infect a greater number of hosts increases, so does the level of harm it brings to the host.&lt;ref&gt;{{cite journal | title=An empirical study of the evolution of virulence under both horizontal and vertical transmission | last1=Stewart | first1=AD | last2=Logsdon | first2=JM | last3=Kelley | first3=SE | journal=Evolution |date=April 2005 | volume=59 | issue=4 | pages=730–739 | doi=10.1554/03-330 | pmid=15926685}}&lt;/ref&gt;<br /> <br /> A pathogen&#039;s infectivity is subtly but importantly different from its [[transmissibility (epidemiology) | transmissibility]], which refers to a pathogen&#039;s capacity to pass from parent to child.<br /> <br /> ==See also==<br /> * [[Basic reproduction number]] (basic reproductive rate, basic reproductive ratio, &#039;&#039;R&#039;&#039;&lt;sub&gt;0&lt;/sub&gt;, or &#039;&#039;r nought&#039;&#039;)<br /> <br /> ==References==<br /> {{reflist}}<br /> <br /> ==External links==<br /> * [http://www.medterms.com/script/main/art.asp?articlekey=24094 Definition]<br /> <br /> {{Medical research studies}}<br /> <br /> [[Category:Epidemiology]]<br /> <br /> <br /> {{infectious-disease-stub}}</div> Prab