About: Effectiveness of interventions targeting air travellers for delaying local outbreaks of SARS-CoV-2

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type	Academic Article research paper schema:ScholarlyArticle
isDefinedBy	Covid-on-the-Web dataset
has title	Effectiveness of interventions targeting air travellers for delaying local outbreaks of SARS-CoV-2
Creator	Klepac, Petra Clifford, Sam Flasche, Stefan Eggo, Rosalind Quilty, Billy Van Zandvoort, Kevin
Source	MedRxiv
abstract	Background: We evaluated if interventions aimed at air travellers can delay local SARS-CoV-2 community transmission in a previously unaffected country. Methods: We simulated infected air travellers arriving into countries with no sustained SARS-CoV-2 transmission or other introduction routes from affected regions. We assessed the effectiveness of syndromic screening at departure and/or arrival & traveller sensitisation to the COVID-2019-like symptoms with the aim to trigger rapid self-isolation and reporting on symptom onset to enable contact tracing. We assumed that syndromic screening would reduce the number of infected arrivals and that traveller sensitisation reduces the average number of secondary cases. We use stochastic simulations to account for uncertainty in both arrival and secondary infections rates, and present sensitivity analyses on arrival rates of infected travellers and the effectiveness of traveller sensitisation. We report the median expected delay achievable in each scenario and an inner 50% interval. Results: Under baseline assumptions, introducing exit and entry screening in combination with traveller sensitisation can delay a local SARS-CoV-2 outbreak by 8 days (50% interval: 3-14 days) when the rate of importation is 1 infected traveller per week at time of introduction. The additional benefit of entry screening is small if exit screening is effective: the combination of only exit screening and traveller sensitisation can delay an outbreak by 7 days (50% interval: 2-13 days). In the absence of screening, with less effective sensitisation, or a higher rate of importation, these delays shrink rapidly to less than 4 days. Conclusion: Syndromic screening and traveller sensitisation in combination may have marginally delayed SARS-CoV-2 outbreaks in unaffected countries.
has issue date	2020-02-13(xsd:dateTime)
bibo:doi	10.1101/2020.02.12.20022426
has license	medrxiv
sha1sum (hex)	f29dfcd082fe2129574776158dcee28fe7a01cbc
schema:url	https://doi.org/10.1101/2020.02.12.20022426
resource representing a document's title	Effectiveness of interventions targeting air travellers for delaying local outbreaks of SARS-CoV-2
resource representing a document's body	covid:f29dfcd082fe2129574776158dcee28fe7a01cbc#body_text
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