Editing Herd immunity (section)

===Overshoot===
The cumulative proportion of individuals who get infected during the course of a disease outbreak can exceed the HIT. This is because the HIT does not represent the point at which the disease stops spreading, but rather the point at which each infected person infects fewer than one additional person on average. When the HIT is reached, the number of additional infections does not immediately drop to zero. The excess of the cumulative proportion of infected individuals over the theoretical HIT is known as the '''overshoot'''.<ref>{{cite journal|vauthors=Handel A, Longini IM, Antia R|title=What is the best control strategy for multiple infectious disease outbreaks?|journal=Proceedings. Biological Sciences|volume=274|issue=1611|pages=833–7|date=March 2007|pmid=17251095|pmc=2093965|doi=10.1098/rspb.2006.0015|quote=In general, the number of infecteds grows until the number of susceptibles has fallen to S<sub>th</sub>. At this point, the average number of secondary infections created by an infected person drops below 1 and therefore the number of infecteds starts to decrease. However, right at this inflection point, the maximum number of infecteds is present. These infecteds will create on average less than 1, but still more than zero further infections, leading to additional depletion of susceptibles and therefore causing an overshoot.}}</ref><ref>{{cite journal|vauthors=Fung IC, Antia R, Handel A|title=How to minimize the attack rate during multiple influenza outbreaks in a heterogeneous population|journal=PLOS ONE|volume=7|issue=6|pages=e36573|date=11 June 2012|pmid=22701558|pmc=3372524|doi=10.1371/journal.pone.0036573|bibcode=2012PLoSO...736573F|doi-access=free}}</ref><ref>{{Cite news|vauthors=Bergstrom CT, Dean N|date=1 May 2020|title=Opinion: What the Proponents of 'Natural' Herd Immunity Don't Say|language=en-US|work=The New York Times|url=https://www.nytimes.com/2020/05/01/opinion/sunday/coronavirus-herd-immunity.html|access-date=30 May 2020|archive-date=3 June 2020|archive-url=https://web.archive.org/web/20200603150038/https://www.nytimes.com/2020/05/01/opinion/sunday/coronavirus-herd-immunity.html|url-status=live}}</ref>