Editing Asymptomatic carrier (section)

=== Typhoid fever ===
[[Typhoid fever]] is an ailment caused by the bacterium ''Salmonella enterica'' ser. Typhi. An individual can acquire this infection from consuming risky foods or drinks, or by consuming foods or drinks prepared by an infected individual. Those who recover from this infection can still carry the bacteria in their cells, and therefore be asymptomatic.<ref>{{cite web|url=https://www.cdc.gov/nczved/divisions/dfbmd/diseases/typhoid_fever/|title=CDC – Typhoid Fever: General Information – NCZVED|publisher=Cdc.gov|access-date=2016-02-14}}</ref>

==== Typhoid Mary ====
[[File:Mary Mallon (Typhoid Mary).jpg|thumb|[[Typhoid Mary]] in a New York Hospital]]
[[Mary Mallon]], known as "Typhoid Mary", was an asymptomatic carrier of ''Salmonella enterica'' serovar typhi, the causative agent of [[typhoid fever]].<ref name=":3">{{cite web|title=Scientists get a handle on what made Typhoid Mary's infectious microbes tick |url=http://med.stanford.edu/ism/2013/august/typhoid.html |website=Med.stanford.edu |access-date=20 August 2013 |url-status=dead |archive-url=https://web.archive.org/web/20130818111217/http://med.stanford.edu/ism/2013/august/typhoid.html |archive-date=18 August 2013 }}</ref> She was a cook for several families and soldiers in New York City during the late 1800s, and several cases of typhoid fever were traced to her by the Health Department. At the time, there was no way of eradicating the disease, and it was spread primarily through fecal-oral transmission. Most of Mary Mallon's transmission risk was thought to arise from her continued involvement in occupations involving food preparation and handling. New York City's public health officials initially sought to merely restrict her from such employment rather than permanently quarantining her. When she continued to be non-compliant, the Health Commission ordered that she be quarantined on one of the islands surrounding Manhattan. She remained there until her death.<ref>{{cite web | url=https://www.forbes.com/sites/kionasmith/2017/09/22/who-was-typhoid-mary/ | title=Who Was Typhoid Mary? | website=[[Forbes]] }}</ref>

Despite appearing perfectly healthy, it is estimated that Mallon infected about 50 people before she was quarantined on [[North and South Brother Islands (New York City)|North Brother Island]].<ref>{{Citation |last=von Csefalvay |first=Chris |title=Simple compartmental models |date=2023 |url=https://linkinghub.elsevier.com/retrieve/pii/B9780323953894000116 |work=Computational Modeling of Infectious Disease |pages=19–91 |access-date=2023-03-06 |publisher=Elsevier |language=en |doi=10.1016/b978-0-32-395389-4.00011-6 |isbn=978-0-323-95389-4|url-access=subscription }}</ref> Scientists calculate that between 1% and 6% of individuals infected with ''Salmonella typhi'' become chronic, asymptomatic carriers like Mary.<ref name=":3" />