COVID-19 pandemic

=== Containment ===
{{further| Zero-COVID}}
Containment is undertaken to stop an outbreak from spreading into the general population. Infected individuals are isolated while they are infectious. The people they have interacted with are contacted and isolated for long enough to ensure that they are either not infected or no longer contagious. Screening is the starting point for containment. Screening is done by checking for symptoms to identify infected individuals, who can then be isolated or offered treatment.<ref name="f4SpW">{{#invoke:cite news||title=Fever Screening &#124; IntelliSEC &#124; Durban, Johannesburg, Cape Town|url=https://intellisec.co.za/fever-screening/|website=IntelliSEC}}</ref> The [[Zero-COVID]] strategy involves using public health measures such as [[contact tracing]], [[COVID-19 testing|mass testing]], [[Travel during the COVID-19 pandemic|border quarantine]], [[COVID-19 lockdowns|lockdowns]] and [[Use and development of software for COVID-19 pandemic mitigation|mitigation software]] to stop [[Transmission of COVID-19|community transmission]] of COVID-19 as soon as it is detected, with the goal of getting the area back to zero detected infections and resuming normal economic and social activities.<ref name=Barcelona /><ref name="Lancet-Li-2020">{{#invoke:cite journal || vauthors = Li Z, Chen Q, Feng L, Rodewald L, Xia Y, Yu H, Zhang R, An Z, Yin W, Chen W, Qin Y, Peng Z, Zhang T, Ni D, Cui J, Wang Q, Yang X, Zhang M, Ren X, Wu D, Sun X, Li Y, Zhou L, Qi X, Song T, Gao GF, Feng Z | title = Active case finding with case management: the key to tackling the COVID-19 pandemic | journal = Lancet | volume = 396 | issue = 10243 | pages = 63–70 | date = July 2020 | pmid = 32505220 | pmc = 7272157 | doi = 10.1016/S0140-6736(20)31278-2 }}</ref> Successful containment or suppression reduces [[Basic reproduction number#Effective reproduction number|Rt]] to less than 1.<ref name="ImpCollege16mar2020" />
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