Editing Conjunctivitis (section)

== Epidemiology ==
Conjunctivitis is the most common eye disease.<ref>{{Cite book | vauthors = Smeltzer SC |url=https://books.google.com/books?id=SmtjSD1x688C&pg=RA1-PA1787 |title=Brunner & Suddarth's textbook of medical-surgical nursing. |date=2010 |publisher=Wolters Kluwer Health/Lippincott Williams & Wilkins |isbn=978-0-7817-8589-1 |edition=12th |location=Philadelphia |page=1787 |archive-url=https://web.archive.org/web/20160815203433/https://books.google.ca/books?id=SmtjSD1x688C&pg=RA1-PA1787 |archive-date=15 August 2016 |url-status=live |df=dmy-all}}</ref> Rates of disease is related to the underlying cause which varies by the age as well as the time of year. Acute conjunctivitis is most frequently found in infants, school-age children and the elderly.<ref name=":1">{{cite journal | vauthors = Høvding G | title = Acute bacterial conjunctivitis | journal = Acta Ophthalmologica | volume = 86 | issue = 1 | pages = 5–17 | date = February 2008 | pmid = 17970823 | doi = 10.1111/j.1600-0420.2007.01006.x | s2cid = 20629824 | doi-access = free }}</ref> The most common cause of infectious conjunctivitis is viral conjunctivitis.<ref name=":0">{{Cite journal | vauthors = Mourad MS, Rihan RA |date=April 2018 |title=Prevalence of Different Eye Diseases excluding Refractive Errors Presented at the Outpatient Clinic in Beheira Eye Hospital |journal=The Egyptian Journal of Hospital Medicine |language=en |volume=71 |issue=2 |pages=2484–2489 |doi=10.12816/0045645 |s2cid=80882721}}</ref>

It is estimated that acute conjunctivitis affects 6 million people annually in the United States.<ref name=Az2013/>

Some seasonal trends have been observed for the occurrence of different forms of conjunctivitis. In the northern hemisphere, the occurrence of bacterial conjunctivitis peaks from December to April, viral conjunctivitis peaks in the summer months and allergic conjunctivitis is more prevalent throughout the spring and summer.<ref name=":1" /><!-- Include more on epidemiology if more info can be found. -->