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Boogaerts T, Van Wichelen N, Quireyns M, Burgard D, Bijlsma L, Delputte P, Gys C, Covaci A, van Nuijs ALN. Current state and future perspectives on de facto population markers for normalization in wastewater-based epidemiology: A systematic literature review. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 935:173223. [PMID: 38761943 PMCID: PMC11270913 DOI: 10.1016/j.scitotenv.2024.173223] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/28/2024] [Revised: 05/10/2024] [Accepted: 05/11/2024] [Indexed: 05/20/2024]
Abstract
Wastewater-based epidemiology (WBE) and wastewater surveillance have become a valuable complementary data source to collect information on community-wide exposure through the measurement of human biomarkers in influent wastewater (IWW). In WBE, normalization of data with the de facto population that corresponds to a wastewater sample is crucial for a correct interpretation of spatio-temporal trends in exposure and consumption patterns. However, knowledge gaps remain in identifying and validating suitable de facto population biomarkers (PBs) for refinement of WBE back-estimations. WBE studies that apply de facto PBs (including hydrochemical parameters, utility consumption data sources, endo- and exogenous chemicals, biological biomarkers and signalling records) for relative trend analysis and absolute population size estimation were systematically reviewed from three databases (PubMed, Web of Science, SCOPUS) according to the PRISMA guidelines. We included in this review 81 publications that accounted for daily variations in population sizes by applying de facto population normalization. To date, a wide range of PBs have been proposed for de facto population normalization, complicating the comparability of normalized measurements across WBE studies. Additionally, the validation of potential PBs is complicated by the absence of an ideal external validator, magnifying the overall uncertainty for population normalization in WBE. Therefore, this review proposes a conceptual tier-based cross-validation approach for identifying and validating de facto PBs to guide their integration for i) relative trend analysis, and ii) absolute population size estimation. Furthermore, this review also provides a detailed evaluation of the uncertainty observed when comparing different de jure and de facto population estimation approaches. This study shows that their percentual differences can range up to ±200 %, with some exceptions showing even larger variations. This review underscores the need for collaboration among WBE researchers to further streamline the application of de facto population normalization and to evaluate the robustness of different PBs in different socio-demographic communities.
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Affiliation(s)
- Tim Boogaerts
- Toxicological Centre, University of Antwerp, Universiteitsplein 1, 2610 Antwerp, Belgium; Exposome Center of Excellence, University of Antwerp, Universiteitsplein 1, 2610 Antwerp, Belgium
| | - Natan Van Wichelen
- Toxicological Centre, University of Antwerp, Universiteitsplein 1, 2610 Antwerp, Belgium; Exposome Center of Excellence, University of Antwerp, Universiteitsplein 1, 2610 Antwerp, Belgium
| | - Maarten Quireyns
- Toxicological Centre, University of Antwerp, Universiteitsplein 1, 2610 Antwerp, Belgium; Exposome Center of Excellence, University of Antwerp, Universiteitsplein 1, 2610 Antwerp, Belgium
| | - Dan Burgard
- Department of Chemistry and Biochemistry, University of Puget Sound, Tacoma, WA, USA
| | - Lubertus Bijlsma
- Environmental and Public Health Analytical Chemistry, Research Institute for Pesticides and Water, University Jaume I, Castellón, Spain
| | - Peter Delputte
- Laboratory for Microbiology, Parasitology and Hygiene, University of Antwerp, Universiteitsplein 1, 2610 Antwerp, Belgium; Infla-Med Center of Excellence, University of Antwerp, Universiteitsplein 1, 2610 Antwerp, Belgium
| | - Celine Gys
- Toxicological Centre, University of Antwerp, Universiteitsplein 1, 2610 Antwerp, Belgium; Exposome Center of Excellence, University of Antwerp, Universiteitsplein 1, 2610 Antwerp, Belgium
| | - Adrian Covaci
- Toxicological Centre, University of Antwerp, Universiteitsplein 1, 2610 Antwerp, Belgium; Exposome Center of Excellence, University of Antwerp, Universiteitsplein 1, 2610 Antwerp, Belgium
| | - Alexander L N van Nuijs
- Toxicological Centre, University of Antwerp, Universiteitsplein 1, 2610 Antwerp, Belgium; Exposome Center of Excellence, University of Antwerp, Universiteitsplein 1, 2610 Antwerp, Belgium
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2
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Boogaerts T, Quireyns M, De Loof H, Bertels X, Van Wichelen N, Pussig B, Saevels J, Lahousse L, Bonmariage P, Hamelinck W, Aertgeerts B, Covaci A, van Nuijs ALN. Do the lockdown-imposed changes in a wastewater treatment plant catchment's socio-demographics impact longitudinal temporal trends in psychoactive pharmaceutical use? THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 876:162342. [PMID: 36842581 DOI: 10.1016/j.scitotenv.2023.162342] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/06/2022] [Revised: 01/30/2023] [Accepted: 02/15/2023] [Indexed: 06/18/2023]
Abstract
Wastewater-based epidemiology (WBE) includes the analysis of human metabolic biomarkers of xenobiotics in influent wastewater. WBE complements existing drug utilization approaches and provides objective, spatio-temporal information on the consumption of pharmaceuticals in the general population. This approach was applied to 24-h composite influent wastewater samples from Leuven, Belgium. Daily samples were analysed from September 2019 to December 2019 (n = 76), and on three days of the week (Monday, Wednesday, Saturday) from January 2020 to April 2022 (n = 367). Sample analysis consisted of 96-well solid-phase extraction and liquid chromatography coupled to tandem mass spectrometry. Measured concentrations of 21 biomarkers for antidepressant and opioid use were converted to population-normalized mass loads (PNML) by considering the flow rate and catchment population. To capture population movements, mobile phone data was used. Amitriptyline, hydroxy-bupropion, norcitalopram, citalopram, normirtazapine, trazodone, O-desmethylvenlafaxine, codeine, 2-ethylidene-1,5-dimethyl-3,3-diphenylpyrrolidine (EDDP), methadone, morphine, O-desmethyltramadol, and tramadol were included in the temporal assessment since concentrations were above the lower limit of quantification. The PNML of most biomarkers increased (with 3-119 %) throughout the sampling period. The population disruption during the COVID-19 pandemic led to a major change in the socio-demographics of the catchment area, resulting in temporal differences in the PNML of the different biomarkers. As such, higher PNML were observed during the different lockdown phases, which were characterized by the outflow of university students and a decreasing commuting in and out the catchment area. The effects of the fluctuating socio-demographics of the catchment population were further evidenced by the different week-weekend pattern of PNMLs over the course of the sampling campaign. Mean parent/metabolite ratios (i.e., citalopram/norcitalopram, tramadol/O-desmethyltramadol, venlafaxine/O-desmethylvenlafaxine, and methadone/EDDP) remained relatively stable throughout the entire sampling campaign (RSD% below 25 % for all ratios, except for methadone/EDDP) and therefore were not affected by this population change.
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Affiliation(s)
- Tim Boogaerts
- Toxicological Centre, University of Antwerp, Universiteitsplein 1, 2610 Wilrijk, Belgium.
| | - Maarten Quireyns
- Toxicological Centre, University of Antwerp, Universiteitsplein 1, 2610 Wilrijk, Belgium
| | - Hans De Loof
- Laboratory of Physiopharmacology, University of Antwerp, Universiteitsplein 1, 2610 Wilrijk, Belgium
| | - Xander Bertels
- Department of Bioanalysis, Ghent University, Ottergemsesteenweg 460, 9000 Ghent, Belgium
| | - Natan Van Wichelen
- Toxicological Centre, University of Antwerp, Universiteitsplein 1, 2610 Wilrijk, Belgium
| | - Bram Pussig
- Academic Center for General Practice, Kapucijnenvoer 7, 3000 Leuven, Belgium
| | - Jan Saevels
- Association of Pharmacists in Belgium (APB), Rue Stevin 137, 1000 Brussels, Belgium
| | - Lies Lahousse
- Department of Bioanalysis, Ghent University, Ottergemsesteenweg 460, 9000 Ghent, Belgium
| | - Pauline Bonmariage
- Association of Pharmacists in Belgium (APB), Rue Stevin 137, 1000 Brussels, Belgium
| | - Wouter Hamelinck
- Association of Pharmacists in Belgium (APB), Rue Stevin 137, 1000 Brussels, Belgium
| | - Bert Aertgeerts
- Academic Center for General Practice, Kapucijnenvoer 7, 3000 Leuven, Belgium
| | - Adrian Covaci
- Toxicological Centre, University of Antwerp, Universiteitsplein 1, 2610 Wilrijk, Belgium
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Sim W, Park S, Ha J, Kim D, Oh JE. Evaluation of population estimation methods for wastewater-based epidemiology in a metropolitan city. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 857:159154. [PMID: 36191710 DOI: 10.1016/j.scitotenv.2022.159154] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/21/2022] [Revised: 09/27/2022] [Accepted: 09/28/2022] [Indexed: 06/16/2023]
Abstract
This study evaluated the effect of population estimation on the calculation of drug biomarker consumption using wastewater-based epidemiology. Population estimates using mobile phone data, census data, and wastewater quality parameters, such as biological oxygen demand (BOD), total nitrogen (TN), and total phosphorus (TP), were evaluated in six different wastewater treatment plant catchment areas of Busan Metropolitan City, South Korea. The population based on mobile phone data was affected by the patterns of non-resident population movements in each area. The population-normalized daily loads (PNDLs) of methamphetamine were compared according to the different population results. The PNDLs using the population based on mobile phone data (PNDLMobile) was 5.87-27.0 mg/d/1000 people. The PNDLMobile values were notably different from the PNDLs using wastewater quality parameters (PNDLWastewater) (PNDLWastewater/PNDLMobile: 51-148 %, mean 93 %, relative standard deviation (RSD) 36 %), indicating the unsuitability of population estimation using BOD, TN, and TP. In areas with a large concentration of workplaces, the PNDLs using census data (PNDLCensus) differed from the PNDLMobile values (PNDLCensus/PNDLMobile: 57-124 %, mean 94 %, RSD 27 %), whereas other areas showed similar values for PNDLCensus and PNDLMobile (PNDLCensus/PNDLMobile: 95-108 %, mean 102 %, RSD 4.2 %). In particular, the total population estimates of the six survey areas using census data were approximately the same as those based on mobile phone data (RSD: 0.8 %), indicating a decrease in the influence of the non-residential active population in the entire metropolitan city.
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Affiliation(s)
- Wonjin Sim
- Institute for Environment and Energy, Pusan National University, Busan 46241, Republic of Korea
| | - Suyeon Park
- Department of Civil and Environmental Engineering, Pusan National University, Busan 46241, Republic of Korea
| | - Jihye Ha
- Department of Urban Planning and Engineering, Pusan National University, Busan 46241, Republic of Korea
| | - Donghyun Kim
- Department of Urban Planning and Engineering, Pusan National University, Busan 46241, Republic of Korea.
| | - Jeong-Eun Oh
- Institute for Environment and Energy, Pusan National University, Busan 46241, Republic of Korea; Department of Civil and Environmental Engineering, Pusan National University, Busan 46241, Republic of Korea.
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Zhao J, Lu J, Zhao H, Yan Y, Dong H, Li W. Illicit drugs and their metabolites in urban wastewater: Analysis, occurrence and consumption in Xinjiang, China. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 852:158457. [PMID: 36063955 DOI: 10.1016/j.scitotenv.2022.158457] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/13/2022] [Revised: 08/15/2022] [Accepted: 08/29/2022] [Indexed: 06/15/2023]
Abstract
The use of illicit drugs has increased considerably across the world. Wastewater-based epidemiology (WBE) of illicit drugs might help determine the types and quantity of illicit drugs consumed in a region. In this study, WBE was applied to analyze illicit drugs in five representative urban wastewater treatment plants (WWTPs) in Xinjiang, China. The collected samples were pretreated under optimized solid-phase extraction conditions and then analyzed using high-performance liquid chromatography-tandem mass spectrometry (HPLC-MS/MS). The results revealed the presence of 9 of the 11 evaluated drugs; among them, the concentrations of these substances ranged as follows: METH (2.60-10.02 ng/L), MDMA (0.49-6.87 ng/L), MOR (4.53-44.75 ng/L), COD (2.24-8.30 ng/L), MTD (1.36-3.75 ng/L), COC (0.48 ng/L), THC (5.98-18.89 ng/L), BE (1.12-2.45 ng/L) and KET (1.50 ng/L). And an estimate of the per capita consumption revealed morphine (10.2 mg/d/1000inhabitants), cannabis (3.9 mg/d/1000inhabitants), 3,4-methylenedioxymethamphetamine (3.9 mg/d/1000 inhabitants), and methamphetamine (2.2 mg/d/1000 inhabitants) as the main substances of abuse in Xinjiang, China. The results of this study might be taken as a reference for future studies on the continuous monitoring of such drugs.
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Affiliation(s)
- Jie Zhao
- School of Chemistry and Chemical Engineering/Key Laboratory of Environmental Monitoring and Pollutant Control of Xinjiang Bingtuan, Shihezi University, Shihezi 832003, China
| | - Jianjiang Lu
- School of Chemistry and Chemical Engineering/Key Laboratory of Environmental Monitoring and Pollutant Control of Xinjiang Bingtuan, Shihezi University, Shihezi 832003, China.
| | - Haijun Zhao
- The First Affiliated Hospital, School of Medicine, Shihezi University, Shihezi 832003, China
| | - Yujun Yan
- School of Chemistry and Chemical Engineering/Key Laboratory of Environmental Monitoring and Pollutant Control of Xinjiang Bingtuan, Shihezi University, Shihezi 832003, China
| | - Hongyu Dong
- School of Chemistry and Chemical Engineering/Key Laboratory of Environmental Monitoring and Pollutant Control of Xinjiang Bingtuan, Shihezi University, Shihezi 832003, China
| | - Wen Li
- School of Chemistry and Chemical Engineering/Key Laboratory of Environmental Monitoring and Pollutant Control of Xinjiang Bingtuan, Shihezi University, Shihezi 832003, China
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Boogaerts T, Bertels X, Pussig B, Quireyns M, Toebosch L, Van Wichelen N, Dumitrascu C, Matheï C, Lahousse L, Aertgeerts B, De Loof H, Covaci A, van Nuijs ALN. Evaluating the impact of COVID-19 countermeasures on alcohol consumption through wastewater-based epidemiology: A case study in Belgium. ENVIRONMENT INTERNATIONAL 2022; 170:107559. [PMID: 36209600 DOI: 10.1016/j.envint.2022.107559] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/11/2022] [Revised: 09/29/2022] [Accepted: 09/30/2022] [Indexed: 06/16/2023]
Abstract
Wastewater-based epidemiology (WBE) is a complementary approach to monitor alcohol consumption in the general population. This method measures concentrations of xenobiotic biomarkers (e.g., ethyl sulphate) in influent wastewater (IWW) and converts these to population-normalized mass loads (PNML, in g/day/1000 inhabitants) by multiplying with the flow rate and dividing by the catchment population. The aims of this case study were to: (i) investigate temporal trends in alcohol use during the COVID-19 pandemic; and (ii) measure the effect of policy measures on alcohol consumption. Daily 24-h composite IWW samples (n = 735) were collected in the wastewater treatment plant of the university city of Leuven (Belgium) starting from September 2019 to September 2021. This is the first study that investigates alcohol use through WBE for a continuous period of two years on a daily basis. Mobile phone data was used to accurately capture population fluxes in the catchment area. Data was evaluated using a time series based statistical framework to graphically and quantitatively assess temporal differences in the measured PNML. Different WBE studies observed temporal changes in alcohol use during the COVID-19 pandemic. In this study, the PNML of ethyl sulphate decreased during the first lockdown phase, potentially indicating that less alcohol was consumed at the Leuven area during home confinement. Contrastingly, alcohol use increased after the re-opening of the catering industry. Additionally, a decrease in alcohol use was observed during the exam periods at the University of Leuven and an increase during the holiday periods. The present study shows the potential of WBE to rapidly assess the impact of some policy measures on alcohol consumption in Belgium. This study also indicates that WBE could be employed as a complementary data source to fill in some of the current knowledge gaps linked to lifestyle behavior.
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Affiliation(s)
- Tim Boogaerts
- Toxicological Centre, University of Antwerp, Universiteitsplein, 1, 2610 Wilrijk, Belgium.
| | - Xander Bertels
- Department of Bioanalysis, Ghent University, Ottergemsesteenweg, 460, 9000 Ghent, Belgium
| | - Bram Pussig
- Academic Center for General Practice, Kapucijnenvoer, 7, 3000 Leuven, Belgium
| | - Maarten Quireyns
- Toxicological Centre, University of Antwerp, Universiteitsplein, 1, 2610 Wilrijk, Belgium
| | - Louis Toebosch
- Toxicological Centre, University of Antwerp, Universiteitsplein, 1, 2610 Wilrijk, Belgium
| | - Natan Van Wichelen
- Toxicological Centre, University of Antwerp, Universiteitsplein, 1, 2610 Wilrijk, Belgium
| | - Catalina Dumitrascu
- Toxicological Centre, University of Antwerp, Universiteitsplein, 1, 2610 Wilrijk, Belgium
| | - Catherina Matheï
- Academic Center for General Practice, Kapucijnenvoer, 7, 3000 Leuven, Belgium
| | - Lies Lahousse
- Department of Bioanalysis, Ghent University, Ottergemsesteenweg, 460, 9000 Ghent, Belgium
| | - Bert Aertgeerts
- Academic Center for General Practice, Kapucijnenvoer, 7, 3000 Leuven, Belgium
| | - Hans De Loof
- Laboratory of Physiopharmacology, University of Antwerp, Universiteitsplein, 1, 2610 Wilrijk, Belgium
| | - Adrian Covaci
- Toxicological Centre, University of Antwerp, Universiteitsplein, 1, 2610 Wilrijk, Belgium
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Adhikari S, Kumar R, Driver EM, Perleberg TD, Yanez A, Johnston B, Halden RU. Mass trends of parabens, triclocarban and triclosan in Arizona wastewater collected after the 2017 FDA ban on antimicrobials and during the COVID-19 pandemic. WATER RESEARCH 2022; 222:118894. [PMID: 35917669 DOI: 10.1016/j.watres.2022.118894] [Citation(s) in RCA: 20] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/21/2022] [Revised: 07/12/2022] [Accepted: 07/22/2022] [Indexed: 06/15/2023]
Abstract
Antimicrobials like parabens, triclosan (TCS), and triclocarban (TCC) are of public health concern worldwide due to their endocrine-disrupting properties and ability to promote antimicrobial drug resistance in human pathogens. The overall use of antimicrobials presumably has increased during the COVID-19 pandemic, whereas TCS and TCC may have experienced reductions in use due to their recent ban from thousands of over-the-counter (OTC) personal care products by the U.S. Food and Drug Administration (FDA). No quantitative data are available on the use of parabens or the impact the FDA ban had on TCC and TCS. Here, we use wastewater samples (n = 1514) from 10 different communities in Arizona to measure the presence of the six different antimicrobial products (TCS, TCC, and four alkylated parabens [methylparaben (MePb), ethylparaben (EtPb), propylparaben (PrPb), butylparaben (BuPb)]) collected before and during the COVID-19 pandemic using a combination of solid-phase extraction, liquid chromatography/tandem mass spectrometry (LC-MS/MS), and isotope dilution for absolute quantitation. The average mass loadings of all antimicrobials combined (1,431 ± 22 mg/day per 1,000 people) after the onset of the local epidemic (March 2020 - October 2020) were significantly higher (945 ± 62 mg/day per 1,000 people; p < 0.05) than before the pandemic (January 2019 - February 2020). Overall, parabens (∑Pbs = 999 ± 16 mg/day per 1,000 people) were the most used antimicrobials, followed by TCS (117 ± 14 mg/day per 1,000 people) and TCC (117 ± 14 mg/day per 1,000 people). After the 2017 U.S. FDA ban, we found a statistically significant (p < 0.05) reduction in the mass loadings of TCS (-89%) and TCC (-80%) but a rise in paraben use (+72%). Mass flows of 3 of a total of 4 parabens (MePb, EtPb, and PrPb) in wastewater were significantly higher upon the onset of the epidemic locally (p < 0.05). This is the first longitudinal study investigating the use of antimicrobials during the COVID-19 pandemic by employing wastewater-based epidemiology. Whereas an overall increase in the use of antimicrobials was evident from analyzing Arizona wastewater, a notable reduction in the use of TCS and TCC was evident during the pandemic, triggered by the U.S. FDA ban.
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Affiliation(s)
- Sangeet Adhikari
- School of Sustainable Engineering and Built Environment, Arizona State University, Tempe, AZ 85287, USA; Biodesign Center for Environmental Engineering, Arizona State University, Tempe, AZ 85287, USA
| | - Rahul Kumar
- Biodesign Center for Environmental Engineering, Arizona State University, Tempe, AZ 85287, USA
| | - Erin M Driver
- Biodesign Center for Environmental Engineering, Arizona State University, Tempe, AZ 85287, USA
| | - Tyler D Perleberg
- Biodesign Center for Environmental Engineering, Arizona State University, Tempe, AZ 85287, USA
| | - Allan Yanez
- Biodesign Center for Environmental Engineering, Arizona State University, Tempe, AZ 85287, USA
| | - Bridger Johnston
- Biodesign Center for Environmental Engineering, Arizona State University, Tempe, AZ 85287, USA
| | - Rolf U Halden
- School of Sustainable Engineering and Built Environment, Arizona State University, Tempe, AZ 85287, USA; Biodesign Center for Environmental Engineering, Arizona State University, Tempe, AZ 85287, USA; OneWaterOneHealth, Nonprofit Project of the Arizona State University Foundation, Tempe, AZ 85287, USA; Global Futures Laboratory, Arizona State University, 800 S. Cady Mall, Tempe, AZ 85281, USA.
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7
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Temporal monitoring of stimulants during the COVID-19 pandemic in Belgium through the analysis of influent wastewater. THE INTERNATIONAL JOURNAL OF DRUG POLICY 2022; 104:103679. [PMID: 35427945 PMCID: PMC8977453 DOI: 10.1016/j.drugpo.2022.103679] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2022] [Revised: 03/25/2022] [Accepted: 03/30/2022] [Indexed: 11/23/2022]
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Coprostanol as a Population Biomarker for SARS-CoV-2 Wastewater Surveillance Studies. WATER 2022. [DOI: 10.3390/w14020225] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Wastewater surveillance is a cost-effective tool for monitoring SARS-CoV-2 transmission in a community. However, challenges remain with regard to interpretating such studies, not least in how to compare SARS-CoV-2 levels between different-sized wastewater treatment plants. Viral faecal indicators, including crAssphage and pepper mild mottle virus, have been proposed as population biomarkers to normalise SARS-CoV-2 levels in wastewater. However, as these indicators exhibit variability between individuals and may not be excreted by everyone, their utility as population biomarkers may be limited. Coprostanol, meanwhile, is a bacterial metabolite of cholesterol which is excreted by all individuals. In this study, composite influent samples were collected from a large- and medium-sized wastewater treatment plant in Dublin, Ireland and SARS-CoV-2 N1, crAssphage, pepper mild mottle virus, HF183 and coprostanol levels were determined. SARS-CoV-2 N1 RNA was detected and quantified in all samples from both treatment plants. Regardless of treatment plant size, coprostanol levels exhibited the lowest variation in composite influent samples, while crAssphage exhibited the greatest variation. Moreover, the strongest correlations were observed between SARS-CoV-2 levels and national and Dublin COVID-19 cases when levels were normalised to coprostanol. This work demonstrates the usefulness of coprostanol as a population biomarker for wastewater surveillance studies.
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Löve ASC, Ásgrímsson V, Ólafsdóttir K. Illicit drug use in Reykjavik by wastewater-based epidemiology. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 803:149795. [PMID: 34482138 DOI: 10.1016/j.scitotenv.2021.149795] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/11/2021] [Revised: 08/15/2021] [Accepted: 08/16/2021] [Indexed: 06/13/2023]
Abstract
Estimation of illicit drug use on a community level by wastewater-based epidemiology (WBE) is both an objective and reliable way to establish near real-time results. Wastewater samples were collected at eleven timepoints in Reykjavik from 2017 to 2020. The use of commonly abused illicit drugs in Iceland (amphetamine, methamphetamine, 3,4-methylenedioxymethamphetamine (MDMA), cocaine, and cannabis) was estimated. Solid phase extraction and ultra-high performance liquid chromatography coupled to tandem mass spectrometry was used for analysis. Estimated amphetamine and methamphetamine use showed signs of an increase from 2017 to 2020 with amphetamine being the dominant stimulant on the market. MDMA use remained stable from 2017 to 2020. Results showed a large increase in cocaine use from 2017 to 2019 but interestingly, a marked decrease in 2020 during the COVID-19 pandemic. Cannabis use was stable from 2017 to 2019 but showed signs of an increase during the pandemic in 2020. Results by WBE corresponded with data based on two other indicators of drug use, seizure data and driving under the influence cases. Both temporal and spatial trends in illicit drug use were successfully estimated by using WBE, complimenting other indicators which provided a comprehensive picture of drug abuse in Reykjavik.
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Affiliation(s)
- Arndís Sue Ching Löve
- University of Iceland, Department of Pharmacology and Toxicology, Hofsvallagata 53, 107 Reykjavik, Iceland.
| | - Valþór Ásgrímsson
- University of Iceland, Department of Pharmacology and Toxicology, Hofsvallagata 53, 107 Reykjavik, Iceland
| | - Kristín Ólafsdóttir
- University of Iceland, Department of Pharmacology and Toxicology, Hofsvallagata 53, 107 Reykjavik, Iceland
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10
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Yu H, Shao XT, Liu SY, Pei W, Kong XP, Wang Z, Wang DG. Estimating dynamic population served by wastewater treatment plants using location-based services data. ENVIRONMENTAL GEOCHEMISTRY AND HEALTH 2021; 43:4627-4635. [PMID: 33928448 DOI: 10.1007/s10653-021-00954-7] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/20/2020] [Accepted: 04/20/2021] [Indexed: 06/12/2023]
Abstract
Wastewater-based epidemiology is a useful approach to estimate population-level exposure to a wide range of substances (e.g., drugs, chemicals, biological agents) by wastewater analysis. An important uncertainty in population normalized loads generated is related to the size and variability of the actual population served by wastewater treatment plants (WWTPs). Here, we built a population model using location-based services (LBS) data to estimate dynamic consumption of illicit drugs. First, the LBS data from Tencent Location Big Data and resident population were used to train a linear population model for estimating population (r2 = 0.92). Then, the spatiotemporal accuracy of the population model was validated. In terms of temporal accuracy, we compared the model-based population with the time-aligned ammonia nitrogen (NH4-N) population within the WWTP of SEG, showing a mean squared error of < 10%. In terms of spatial accuracy, we estimated the model-based population of 42 WWTPs in Dalian and compared it with the NH4-N and design population, indicating good consistency overall (5% less than NH4-N and 4% less than design). Furthermore, methamphetamine consumption and prevalence based on the model were calculated with an average of 111 mg/day/1000 inhabitants and 0.24%, respectively, and dynamically displayed on a visualization system for real-time monitoring. Our study provided a dynamic and accurate population for estimating the population-level use of illicit drugs, much improving the temporal and spatial trend analysis of drug use. Furthermore, accurate information on drug use could be used to assess population health risks in a community.
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Affiliation(s)
- Han Yu
- College of Environmental Science and Engineering, Dalian Maritime University, No. 1 Linghai Road, Dalian, 116026, China
| | - Xue-Ting Shao
- College of Environmental Science and Engineering, Dalian Maritime University, No. 1 Linghai Road, Dalian, 116026, China
| | - Si-Yu Liu
- College of Environmental Science and Engineering, Dalian Maritime University, No. 1 Linghai Road, Dalian, 116026, China
| | - Wei Pei
- College of Environmental Science and Engineering, Dalian Maritime University, No. 1 Linghai Road, Dalian, 116026, China
| | - Xiang-Peng Kong
- College of Environmental Science and Engineering, Dalian Maritime University, No. 1 Linghai Road, Dalian, 116026, China
| | - Zhuang Wang
- Collaborative Innovation Center of Atmospheric Environment and Equipment Technology, Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control, School of Environmental Science and Engineering, Nanjing University of Information Science and Technology, No. 219 Ningliu Road, Nanjing, 210044, China
| | - De-Gao Wang
- College of Environmental Science and Engineering, Dalian Maritime University, No. 1 Linghai Road, Dalian, 116026, China.
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11
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Mackuľak T, Gál M, Špalková V, Fehér M, Briestenská K, Mikušová M, Tomčíková K, Tamáš M, Butor Škulcová A. Wastewater-Based Epidemiology as an Early Warning System for the Spreading of SARS-CoV-2 and Its Mutations in the Population. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2021; 18:5629. [PMID: 34070320 PMCID: PMC8197469 DOI: 10.3390/ijerph18115629] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/21/2021] [Revised: 05/20/2021] [Accepted: 05/21/2021] [Indexed: 12/18/2022]
Abstract
New methodologies based on the principle of "sewage epidemiology" have been successfully applied before in the detection of illegal drugs. The study describes the idea of early detection of a virus, e.g., SARS-CoV-2, in wastewater in order to focus on the area of virus occurrence and supplement the results obtained from clinical examination. By monitoring temporal variation in viral loads in wastewater in combination with other analysis, a virus outbreak can be detected and its spread can be suppressed early. The use of biosensors for virus detection also seems to be an interesting application. Biosensors are highly sensitive, selective, and portable and offer a way for fast analysis. This manuscript provides an overview of the current situation in the area of wastewater analysis, including genetic sequencing regarding viral detection and the technological solution of an early warning system for wastewater monitoring based on biosensors.
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Affiliation(s)
- Tomáš Mackuľak
- Department of Environmental Engineering, Institute of Chemical and Environmental Engineering, Faculty of Chemical and Food Technology, Slovak University of Technology, Radlinského 9, 812 37 Bratislava, Slovakia; (M.F.); (M.T.); (A.B.Š.)
| | - Miroslav Gál
- Department of Inorganic Technology, Faculty of Chemical and Food Technology, Slovak University of Technology, Radlinského 9, 812 37 Bratislava, Slovakia; (M.G.); (V.Š.)
| | - Viera Špalková
- Department of Inorganic Technology, Faculty of Chemical and Food Technology, Slovak University of Technology, Radlinského 9, 812 37 Bratislava, Slovakia; (M.G.); (V.Š.)
- Department of Zoology and Fisheries, Faculty of Agrobiology Food and Natural Resources, Czech University of Life Sciences Prague, Kamýcká 129, 165 21 Prague, Czech Republic
| | - Miroslav Fehér
- Department of Environmental Engineering, Institute of Chemical and Environmental Engineering, Faculty of Chemical and Food Technology, Slovak University of Technology, Radlinského 9, 812 37 Bratislava, Slovakia; (M.F.); (M.T.); (A.B.Š.)
- Department of Inorganic Technology, Faculty of Chemical and Food Technology, Slovak University of Technology, Radlinského 9, 812 37 Bratislava, Slovakia; (M.G.); (V.Š.)
| | - Katarína Briestenská
- Biomedical Research Center of the Slovak Academy of Sciences, Institute of Virology, Dúbravská cesta 9, 845 05 Bratislava, Slovakia; (K.B.); (M.M.); (K.T.)
| | - Miriam Mikušová
- Biomedical Research Center of the Slovak Academy of Sciences, Institute of Virology, Dúbravská cesta 9, 845 05 Bratislava, Slovakia; (K.B.); (M.M.); (K.T.)
| | - Karolína Tomčíková
- Biomedical Research Center of the Slovak Academy of Sciences, Institute of Virology, Dúbravská cesta 9, 845 05 Bratislava, Slovakia; (K.B.); (M.M.); (K.T.)
| | - Michal Tamáš
- Department of Environmental Engineering, Institute of Chemical and Environmental Engineering, Faculty of Chemical and Food Technology, Slovak University of Technology, Radlinského 9, 812 37 Bratislava, Slovakia; (M.F.); (M.T.); (A.B.Š.)
| | - Andrea Butor Škulcová
- Department of Environmental Engineering, Institute of Chemical and Environmental Engineering, Faculty of Chemical and Food Technology, Slovak University of Technology, Radlinského 9, 812 37 Bratislava, Slovakia; (M.F.); (M.T.); (A.B.Š.)
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12
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Pandopulos AJ, Bade R, Tscharke BJ, O'Brien JW, Simpson BS, White JM, Gerber C. Application of catecholamine metabolites as endogenous population biomarkers for wastewater-based epidemiology. THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 763:142992. [PMID: 33498117 DOI: 10.1016/j.scitotenv.2020.142992] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/27/2020] [Revised: 10/06/2020] [Accepted: 10/06/2020] [Indexed: 05/24/2023]
Abstract
Wastewater-based epidemiology studies use catchment populations to normalise chemical marker mass loads in 24-h composite wastewater samples. However, one of the biggest uncertainties within the field is the accuracy of the population used. A population marker in wastewater may significantly reduce the uncertainty. This study evaluated the catecholamine metabolites - homovanillic acid (HVA) and vanillylmandelic acid (VMA) - as potential population biomarkers. Influent wastewater 24-h composite samples were collected from 38 wastewater catchments from around Australia (representing ~33% of Australia's population), extracted and analysed by liquid chromatography tandem mass spectrometry. Measured mass loads were compared to population sizes determined by mapping catchment maps against high-resolution census data. Both biomarkers correlated with coefficient of determinations (r2) of 0.908 and 0.922 for HVA and VMA, respectively. From the regression analysis, a slope (i.e. the daily per-capita excretion) of 1.241 and 1.067 mg.day-1.person-1 was obtained for HVA and VMA, respectively. The mass load ratio between VMA:HVA were very similar to that reported in literature for urinary analysis among all catchments. Overall, this study provided further evidence that catecholamine metabolites are suitable candidates as population biomarkers for future studies.
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Affiliation(s)
- Aaron J Pandopulos
- University of South Australia, Clinical and Health Sciences (CHS), Health and Biomedical Innovation, South Australia 5000, Australia
| | - Richard Bade
- University of South Australia, Clinical and Health Sciences (CHS), Health and Biomedical Innovation, South Australia 5000, Australia
| | - Benjamin J Tscharke
- Queensland Alliance for Environmental Health Science (QAEHS), The University of Queensland, 20 Cornwall Street Woolloongabba, Queensland 4102, Australia
| | - Jake W O'Brien
- Queensland Alliance for Environmental Health Science (QAEHS), The University of Queensland, 20 Cornwall Street Woolloongabba, Queensland 4102, Australia
| | - Bradley S Simpson
- University of South Australia, Clinical and Health Sciences (CHS), Health and Biomedical Innovation, South Australia 5000, Australia
| | - Jason M White
- University of South Australia, Clinical and Health Sciences (CHS), Health and Biomedical Innovation, South Australia 5000, Australia
| | - Cobus Gerber
- University of South Australia, Clinical and Health Sciences (CHS), Health and Biomedical Innovation, South Australia 5000, Australia.
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13
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Medema G, Been F, Heijnen L, Petterson S. Implementation of environmental surveillance for SARS-CoV-2 virus to support public health decisions: Opportunities and challenges. CURRENT OPINION IN ENVIRONMENTAL SCIENCE & HEALTH 2020; 17:49-71. [PMID: 33024908 PMCID: PMC7528975 DOI: 10.1016/j.coesh.2020.09.006] [Citation(s) in RCA: 201] [Impact Index Per Article: 50.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/06/2023]
Abstract
Analysing wastewater can be used to track infectious disease agents that are shed via stool and urine. Sewage surveillance of SARS-CoV-2 has been suggested as a tool to determine the extent of COVID-19 in cities and serve as an early warning for (re-)emergence of SARS-CoV-2 circulation in communities. The focus of this review is on the strength of evidence, opportunities and challenges for the application of sewage surveillance to inform public health decision making. Considerations for undertaking sampling programs are reviewed including sampling sites, strategies, sample transport, storage and quantification methods; together with the approach and evidence base for quantifying prevalence of infection from measured wastewater concentration. Published SARS-CoV-2 sewage surveillance studies (11 peer reviewed and 10 preprints) were reviewed to demonstrate the current status of implementation to support public health decisions. Although being very promising, a number of areas were identified requiring additional research to further strengthen this approach and take full advantage of its potential. In particular, design of adequate sampling strategies, spatial and temporal resolution of sampling, sample storage, replicate sampling and analysis, controls for the molecular methods used for the quantification of SARS-CoV-2 RNA in wastewater. The use of appropriate prevalence data and methods to correlate or even translate SARS-CoV-2 concentrations in wastewater to prevalence of virus shedders in the population is discussed.
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Affiliation(s)
- Gertjan Medema
- KWR Water Research Institute, Groningenhaven 7, Nieuwegein, 3433 PE, the Netherlands
- Delft University of Technology, Stevinweg 1, Delft, 2628 CN, the Netherlands
- Michigan State University, 1405 S Harrison Rd, East-Lansing, Michigan, 48823, USA
| | - Frederic Been
- KWR Water Research Institute, Groningenhaven 7, Nieuwegein, 3433 PE, the Netherlands
| | - Leo Heijnen
- KWR Water Research Institute, Groningenhaven 7, Nieuwegein, 3433 PE, the Netherlands
| | - Susan Petterson
- Water & Health Pty Ltd, North Sydney, 2060, Australia
- School of Medicine, Griffith University, Parklands Drive, Gold Coast, Australia
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14
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Hart OE, Halden RU. Simulated 2017 nationwide sampling at 13,940 major U.S. sewage treatment plants to assess seasonal population bias in wastewater-based epidemiology. THE SCIENCE OF THE TOTAL ENVIRONMENT 2020; 727:138406. [PMID: 32334208 DOI: 10.1016/j.scitotenv.2020.138406] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/10/2020] [Revised: 03/31/2020] [Accepted: 03/31/2020] [Indexed: 05/18/2023]
Abstract
Wastewater-based epidemiology (WBE) is an economical technique for monitoring and managing the health and behavior of human populations. Using 2017 nationwide data on geospatial population demographics as a test case, we simulated repeated sampling at all major U.S. wastewater treatment plants (WWTPs; n = 13,940) under constant biomarker loading conditions, to explore the potential sensitivity of WBE for generating skewed data. Simulation of repeated sewage sampling over all four seasons of 2017 yielded a number of expected, inter-dependent phenomena triggered by cooler wintertime temperatures compared to summertime results, including relatively (i) slower in-sewer biomarker decay, (ii) longer distal reach of WBE, (iii) larger effective sewershed monitoring areas, and (iv) an increase in the population represented. Additional important but not necessarily anticipated simulation outcomes included (v) distinct, non-random changes in demographic parameters of monitored subpopulations (e.g., by household income, educational attainment, military service, unemployment, and lack of health insurance), (vi) recurring observation of the latter demographic patterns across various geospatial scales and regions, and (vii) more evenly distributed results in the winter. In contrast, data obtainable by WBE in the summertime were dominated by households residing closest to the WWTP and subpopulations of relatively lesser wealth, educational achievement, healthcare access and employability. The analytical approach presented here should be readily applicable to other regions worldwide and may help to improve the design, robustness and interpretation of future WBE studies.
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Affiliation(s)
- Olga E Hart
- Biodesign Center for Environmental Health Engineering, The Biodesign Institute, Arizona State University, 1001 S. McAllister Avenue, Tempe, AZ 85287-8101, USA
| | - Rolf U Halden
- Biodesign Center for Environmental Health Engineering, The Biodesign Institute, Arizona State University, 1001 S. McAllister Avenue, Tempe, AZ 85287-8101, USA.
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15
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O'Rourke CE, Subedi B. Occurrence and Mass Loading of Synthetic Opioids, Synthetic Cathinones, and Synthetic Cannabinoids in Wastewater Treatment Plants in Four U.S. Communities. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2020; 54:6661-6670. [PMID: 32356976 PMCID: PMC8014967 DOI: 10.1021/acs.est.0c00250] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
Abstract
A few new psychoactive substances (NPS) that mimic the effects of controlled neuropsychiatric and illicit drugs have been forensically identified in the U.S. Wastewater-based epidemiology (WBE) can provide a comprehensive and more cost- and time-effective method of determining the prevalence of NPSs in communities. In this study, an analytical method capable of simultaneous determination of trace-level 40 NPS residues (synthetic opioids, synthetic cannabinoids, synthetic cathinones, piperazines, indole, and amphetamine) in wastewater was developed and validated. The developed analytical method was utilized to determine the occurrence of NPSs in four rural communities in southern Illinois. Nine NPSs (carfentanil, furanyl fentanyl, methoxyacetyl fentanyl, MAB-CHMINACA, methcathinone, 4-methyl pentedrone, 2-methyl-4'-(methylthio)-2-morpholinopropiophenone (MMMP), 1-(3-chlorophenyl) piperazine (mCPP), and 5-(2-Aminopropyl) Indole (5IT) were quantified. Methcathinone was the most frequently detected NPS (detection frequency, df = 100%) followed closely by the MMMP and mCPP (df = 91%). The mass loading of methcathinone, mCPP, and 5-IT using ammoniacal nitrogen-based population were up to 21.1 ± 1.3 mg/d/1000 people, 15.0 ± 0.5 mg/d/1000 people, and 9.75 ± 2.72 mg/d/1000 people, respectively. This is the first study to determine the occurrence of NPSs including synthetic opioids, synthetic cannabinoids, synthetic cathinones, and piperazines in the U.S. communities.
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Affiliation(s)
- Catherine E O'Rourke
- Department of Chemistry, Murray State University, 1201 Jesse D. Jones Hall, Murray, Kentucky 42071-3300, United States
| | - Bikram Subedi
- Department of Chemistry, Murray State University, 1201 Jesse D. Jones Hall, Murray, Kentucky 42071-3300, United States
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16
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Goulding N, Hickman M, Reid M, Amundsen EJ, Baz-Lomba JA, O'Brien JW, Tscharke BJ, de Voogt P, Emke E, Kuijpers W, Hall W, Jones HE. A comparison of trends in wastewater-based data and traditional epidemiological indicators of stimulant consumption in three locations. Addiction 2020; 115:462-472. [PMID: 31633843 DOI: 10.1111/add.14852] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/26/2019] [Revised: 06/13/2019] [Accepted: 09/27/2019] [Indexed: 12/16/2022]
Abstract
AIMS To compare long-term trends in wastewater data with other indicators of stimulant use in three locations and to test the reliability of estimates based on 1 week of sampling. DESIGN Comparison of trends in quantities ('loads') of stimulants or their metabolites in wastewater with trends in other indicators of stimulant use (e.g. treatment, police, population survey data). SETTING AND PARTICIPANTS Populations in Oslo (Norway), South-East Queensland (Australia) and Eindhoven (the Netherlands). MEASUREMENTS Wastewater data were modelled for MDMA (3,4-methylenedioxymethamphetamine), benzoylecgonine (a metabolite of cocaine), amphetamine and methamphetamine in Oslo; benzoylecgonine in Eindhoven; and methamphetamine in South-East Queensland. Choice of stimulants modelled in each region was primarily determined by availability of useable data. FINDINGS In Oslo, wastewater data, driving under the influence of drugs statistics and seizure data all suggested increasing MDMA use between 2009 and 2017. In South-East Queensland, there was an estimated 31.1% [95% confidence interval (CI) = 29.4-32.9%] annual increase in daily loads of methamphetamine in wastewater between 2009 and 2016, compared with a 14.1% (95% CI = 10.9-17.3%) annual increase in seizures. Some of the increase in wastewater can be explained by increased purity. In Eindhoven, there was no evidence of a change in cocaine consumption from wastewater, but a reduction was observed in numbers in treatment for cocaine use from 2012 to 2017. In approximately half the cases examined in Oslo, credible intervals around estimates of annual average loads from a regression model versus estimates based on a single week of sampling did not overlap. CONCLUSIONS Long-term trends in loads of stimulants in wastewater appear to be broadly consistent with trends in other indicators of stimulant use in three locations. Wastewater data should be interpreted alongside epidemiological indicators and purity data. One week of wastewater sampling may not be sufficient for valid inference about drug consumption.
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Affiliation(s)
- Neil Goulding
- Population Health Sciences, University of Bristol, Canynge Hall, Bristol, UK
| | - Matthew Hickman
- Population Health Sciences, University of Bristol, Canynge Hall, Bristol, UK
| | - Malcolm Reid
- Norwegian Institute for Water Research, Oslo, Norway
| | - Ellen J Amundsen
- Department of Alcohol, Tobacco and Drugs, Norwegian Institute of Public Health, Oslo, Norway
| | | | - Jake W O'Brien
- Queensland Alliance for Environmental Health Sciences (QAEHS), The University of Queensland, Woolloongabba, QLD, Australia
| | - Ben J Tscharke
- Queensland Alliance for Environmental Health Sciences (QAEHS), The University of Queensland, Woolloongabba, QLD, Australia
| | - Pim de Voogt
- KWR Water Research Institute, Nieuwegein, the Netherlands.,Institute for Biodiversity and Ecosystem Dynamics, University of Amsterdam, the Netherlands
| | - Erik Emke
- KWR Water Research Institute, Nieuwegein, the Netherlands
| | - Wil Kuijpers
- Stichting Informatievoorziening Zorg (IVZ), Houten, the Netherlands
| | - Wayne Hall
- Centre for Youth Substance Abuse Research, The University of Queensland, Herston, QLD, Australia
| | - Hayley E Jones
- Population Health Sciences, University of Bristol, Canynge Hall, Bristol, UK
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17
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O'Brien JW, Hall WD. Commentary on Burgard et al. (2019): Wastewater based estimates of the size of illicit markets for psychoactive drugs. Addiction 2019; 114:1591-1592. [PMID: 31321822 DOI: 10.1111/add.14716] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/12/2019] [Accepted: 06/19/2019] [Indexed: 11/28/2022]
Affiliation(s)
- Jake W O'Brien
- Queensland Alliance for Environmental Health Sciences, The University of Queensland, St Lucia, QLD, Australia
| | - Wayne D Hall
- Centre for Youth Substance Abuse Research, The University of Queensland, St Lucia, QLD, Australia.,National Addiction Centre, Kings College London, London, UK
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