Editing Yellow fever (section)

===Vector control===
[[File:Luchemos todos contra el dengue.jpg|thumb|left|Information campaign for prevention of [[dengue]] and yellow fever in [[Paraguay]]]]

Control of the yellow fever mosquito ''A. aegypti'' is of major importance, especially because the same mosquito can also transmit [[dengue]] fever and [[chikungunya]] disease.<ref>{{Cite web |title=Vector-borne diseases |url=https://www.who.int/news-room/fact-sheets/detail/vector-borne-diseases |access-date=2022-04-25 |website=World Health Organization |language=en}}</ref> ''A. aegypti'' breeds preferentially in water, for example, in installations by inhabitants of areas with precarious drinking water supplies, or in domestic refuse, especially tires, cans, and plastic bottles. These conditions are common in urban areas in developing countries.<ref>{{Cite web |title=Humanitarian emergencies |url=https://www.who.int/teams/environment-climate-change-and-health/water-sanitation-and-health/environmental-health-in-emergencies/humanitarian-emergencies |access-date=2022-04-25 |website=World Health Organization |language=en}}</ref>

Two main strategies are employed to reduce ''A. aegypti'' populations.<ref>{{cite journal | vauthors = Singh RK, Dhama K, Khandia R, Munjal A, Karthik K, Tiwari R, Chakraborty S, Malik YS, Bueno-Marí R | display-authors = 6 | title = Prevention and Control Strategies to Counter Zika Virus, a Special Focus on Intervention Approaches against Vector Mosquitoes-Current Updates | journal = Frontiers in Microbiology | volume = 9 | page = 87 | date = 2018 | pmid = 29472902 | doi = 10.3389/fmicb.2018.00087 | pmc = 5809424 | doi-access = free }}</ref> One approach is to kill the developing larvae. Measures are taken to reduce the water accumulations in which the larvae develop. [[Larvicide]]s are used, along with larvae-eating fish and [[copepod]]s, which reduce the number of larvae.<ref>{{Cite web |last=US EPA |first=OCSPP |date=2013-02-21 |title=Controlling Mosquitoes at the Larval Stage |url=https://www.epa.gov/mosquitocontrol/controlling-mosquitoes-larval-stage |access-date=2022-04-25 |website=www.epa.gov |language=en}}</ref> For many years, copepods of the genus ''[[Mesocyclops]]'' have been used in [[Vietnam]] for preventing dengue fever.<ref>{{cite journal | vauthors = Tran TT, Olsen A, Viennet E, Sleigh A | title = Social sustainability of Mesocyclops biological control for dengue in South Vietnam | journal = Acta Tropica | volume = 141 | issue = Pt A | pages = 54–59 | date = January 2015 | pmid = 25312335 | doi = 10.1016/j.actatropica.2014.10.006 | doi-access = free }}</ref> This eradicated the mosquito vector in several areas. Similar efforts may prove effective against yellow fever. [[Pyriproxyfen]] is recommended as a chemical larvicide, mainly because it is safe for humans and effective in small doses.<ref name=Toll2009/>

The second strategy is to reduce populations of the adult yellow fever mosquito. [[Lethal ovitrap]]s can reduce ''Aedes'' populations, using lesser amounts of pesticide because it targets the pest directly.<ref>{{cite journal | vauthors = Hustedt JC, Boyce R, Bradley J, Hii J, Alexander N | title = Use of pyriproxyfen in control of Aedes mosquitoes: A systematic review | journal = PLOS Neglected Tropical Diseases | volume = 14 | issue = 6 | pages = e0008205 | date = June 2020 | pmid = 32530915 | pmc = 7314096 | doi = 10.1371/journal.pntd.0008205 | doi-access = free }}</ref> Curtains and lids of water tanks can be sprayed with [[insecticide]]s, but application inside houses is not recommended by the WHO.<ref>{{cite journal | vauthors = Pérez D, Van der Stuyft P, Toledo ME, Ceballos E, Fabré F, Lefèvre P | title = Insecticide treated curtains and residual insecticide treatment to control Aedes aegypti: An acceptability study in Santiago de Cuba | journal = PLOS Neglected Tropical Diseases | volume = 12 | issue = 1 | pages = e0006115 | date = January 2018 | pmid = 29293501 | pmc = 5766245 | doi = 10.1371/journal.pntd.0006115 | doi-access = free }}</ref> Insecticide-treated [[mosquito net]]s are effective, just as they are against the ''[[Anopheles]]'' mosquito that carries malaria.<ref name=Toll2009/>