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dc.contributor.authorBeen, Frederic
dc.contributor.authorEmke, Erik
dc.contributor.authorMatias, João
dc.contributor.authorBaz-Lomba, Jose Antonio
dc.contributor.authorBoogaerts, Tim
dc.contributor.authorCastiglioni, Sara
dc.contributor.authorCampos-Mañas, Marina
dc.contributor.authorCelma, Alberto
dc.contributor.authorCovaci, Adrian
dc.contributor.authorde Voogt, Pim
dc.contributor.authorHernández, Félix
dc.contributor.authorKasprzyk-Hordern, Barbara
dc.contributor.authorter Laak, Thomas
dc.contributor.authorReid, Malcolm James
dc.contributor.authorSalgueiro-González, Noelia
dc.contributor.authorSteenbeek, Ruud
dc.contributor.authorvan Nuijs, Alexander L.N.
dc.contributor.authorZuccato, Ettore
dc.contributor.authorBijlsma, Lubertus
dc.identifier.citationEnvironment International. 2021, 153, 106540.en_US
dc.description.abstractThe COVID-19 outbreak has forced countries to introduce severe restrictive measures to contain its spread. In particular, physical distancing and restriction of movement have had important consequences on human behaviour and potentially also on illicit drug use and supply. These changes can be associated with additional risks for users, in particular due to reduced access to prevention and harm reduction activities. Furthermore, there have been limitations in the amount of data about drug use which can be collected due to restrictions. To goal of this study was to obtain information about potential changes in illicit drug use impacted by COVID-19 restrictions. Wastewater samples were collected in seven cities in the Netherlands, Belgium, Spain and Italy at the beginning of lockdowns (March-May 2020). Using previously established and validated methods, levels of amphetamine (AMP), methamphetamine (METH), MDMA, benzoylecgonine (BE, the main metabolite of cocaine) and 11-nor-9-carboxy-Δ9-tetrahydrocannabinol (THC-COOH, main metabolite of tetrahydrocannabinol (THC)) were measured and compared with findings from previous years. Important differences in levels of consumed drugs were observed across the considered countries. Whilst for some substances and locations, marked decreases in consumption could be observed (e.g., 50% decrease in MDMA levels compared to previous years). In some cases, similar or even higher levels compared to previous years could be found. Changes in weekly patterns were also observed, however these were not clearly defined for all locations and/or substances. Findings confirm that the current situation is highly heterogeneous and that it remains very difficult to explain and/or predict the effect that the present pandemic has on illicit drug use and availability. However, given the current difficulty in obtaining data due to restrictions, wastewater analysis can provide relevant information about the situation at the local level, which would be hard to obtain otherwise.en_US
dc.rightsAttribution-NonCommercial-NoDerivatives 4.0 Internasjonal*
dc.titleChanges in drug use in European cities during early COVID-19 lockdowns – A snapshot from wastewater analysisen_US
dc.typePeer revieweden_US
dc.typeJournal articleen_US
dc.rights.holder© 2021 The Authors.en_US
dc.source.journalEnvironment Internationalen_US

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Attribution-NonCommercial-NoDerivatives 4.0 Internasjonal
Med mindre annet er angitt, så er denne innførselen lisensiert som Attribution-NonCommercial-NoDerivatives 4.0 Internasjonal