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  1. Article ; Online: Tracking the effects of the COVID-19 pandemic on viral gastroenteritis through wastewater-based retrospective analyses.

    Ando, Hiroki / Ahmed, Warish / Okabe, Satoshi / Kitajima, Masaaki

    The Science of the total environment

    2023  Volume 905, Page(s) 166557

    Abstract: The COVID-19 pandemic possibly disrupted the circulation and seasonality of gastroenteritis viruses (e.g., Norovirus (NoV), Sapovirus (SaV), group A rotavirus (ARoV), and Aichivirus (AiV)). Despite the growing application of wastewater-based epidemiology ...

    Abstract The COVID-19 pandemic possibly disrupted the circulation and seasonality of gastroenteritis viruses (e.g., Norovirus (NoV), Sapovirus (SaV), group A rotavirus (ARoV), and Aichivirus (AiV)). Despite the growing application of wastewater-based epidemiology (WBE), there remains a lack of sufficient investigations into the actual impact of the COVID-19 pandemic on the prevalence of gastroenteritis viruses. In this study, we measured NoV GI and GII, SaV, ARoV, and AiV RNA concentrations in 296 influent wastewater samples collected from three wastewater treatment plants (WWTPs) in Sapporo, Japan between October 28, 2018 and January 12, 2023 using the highly sensitive EPISENS™ method. The detection ratios of SaV and ARoV after May 2020 (SaV: 49.8 % (134/269), ARoV: 57.4 % (151/263)) were significantly lower than those before April 2020 (SaV: 93.9 % (31/33), ARoV: 97.0 % (32/33); SaV: p < 3.5×10
    MeSH term(s) Humans ; Gastroenteritis/epidemiology ; Wastewater ; Pandemics ; Caliciviridae Infections/epidemiology ; Retrospective Studies ; Genotype ; COVID-19/epidemiology ; Rotavirus ; Sapovirus/genetics ; Norovirus ; RNA ; Feces ; Phylogeny
    Chemical Substances Wastewater ; RNA (63231-63-0)
    Language English
    Publishing date 2023-08-24
    Publishing country Netherlands
    Document type Journal Article
    ZDB-ID 121506-1
    ISSN 1879-1026 ; 0048-9697
    ISSN (online) 1879-1026
    ISSN 0048-9697
    DOI 10.1016/j.scitotenv.2023.166557
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article ; Online: The growing need to establish a global wastewater surveillance consortium for future pandemic preparedness.

    Murakami, Michio / Kitajima, Masaaki / Endo, Noriko / Ahmed, Warish / Gawlik, Bernd Manfred

    Journal of travel medicine

    2023  Volume 30, Issue 7

    MeSH term(s) Humans ; Pandemics/prevention & control ; Wastewater ; Wastewater-Based Epidemiological Monitoring
    Chemical Substances Wastewater
    Language English
    Publishing date 2023-03-01
    Publishing country England
    Document type Letter
    ZDB-ID 1212504-0
    ISSN 1708-8305 ; 1195-1982
    ISSN (online) 1708-8305
    ISSN 1195-1982
    DOI 10.1093/jtm/taad035
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article ; Online: Reduction of human fecal markers and enteric viruses in Sydney estuarine waters receiving wet weather overflows.

    Ahmed, Warish / Payyappat, Sudhi / Cassidy, Michele / Harrison, Nathan / Besley, Colin

    The Science of the total environment

    2023  Volume 896, Page(s) 165008

    Abstract: The current microbial source tracking (MST) study tracked the reduction of the culturable fecal indicator bacteria enterococci, four human fecal markers (Bacteroides HF183, Lachnospiraceae Lachno3, cross-assembly phage (CrAssphage) and pepper mild mottle ...

    Abstract The current microbial source tracking (MST) study tracked the reduction of the culturable fecal indicator bacteria enterococci, four human fecal markers (Bacteroides HF183, Lachnospiraceae Lachno3, cross-assembly phage (CrAssphage) and pepper mild mottle virus (PMMoV)) along with four enteric viruses - human adenovirus 40/41 (HAdV 40/41), enterovirus (EV), human norovirus GI (HNoV GI) and GII (HNoV GII) post wet weather overflows (WWOs) at two estuarine water sites from two depths under separate six-day sampling campaigns over seven and 12 days in Sydney, NSW, Australia. Neither HNoV GI nor GII was detected, while 13.9 % (10/72) of estuarine water samples had detections of EV. Quantifiable concentrations (0.64 to 2.00 log
    MeSH term(s) Humans ; Environmental Monitoring ; Sewage/microbiology ; Water Pollution/analysis ; Enterovirus ; Viruses/genetics ; Bacteriophages ; Weather ; Water ; Feces/microbiology ; Water Microbiology
    Chemical Substances Sewage ; Water (059QF0KO0R)
    Language English
    Publishing date 2023-06-20
    Publishing country Netherlands
    Document type Journal Article
    ZDB-ID 121506-1
    ISSN 1879-1026 ; 0048-9697
    ISSN (online) 1879-1026
    ISSN 0048-9697
    DOI 10.1016/j.scitotenv.2023.165008
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  4. Article ; Online: Assessing the nucleic acid decay of human wastewater markers and enteric viruses in estuarine waters in Sydney, Australia.

    Ahmed, Warish / Korajkic, Asja / Gabrewold, Metasebia / Payyappat, Sudhi / Cassidy, Michele / Harrison, Nathan / Besley, Colin

    The Science of the total environment

    2024  Volume 926, Page(s) 171389

    Abstract: This research investigated the in-situ decay rates of four human wastewater-associated markers (Bacteroides HF183 (HF183), Lachnospiraceae Lachno3 (Lachno3), cross-assembling phage (crAssphage), pepper mild mottle virus (PMMoV) and three enteric viruses ( ...

    Abstract This research investigated the in-situ decay rates of four human wastewater-associated markers (Bacteroides HF183 (HF183), Lachnospiraceae Lachno3 (Lachno3), cross-assembling phage (crAssphage), pepper mild mottle virus (PMMoV) and three enteric viruses (human adenovirus 40/41 (HAdV 40/41), enterovirus (EV) and human norovirus GII (HNoV GII) in two estuarine water environments (Davidson Park (DP) and Hen and Chicken Bay (HCB) in temperate Sydney, NSW, Australia, employing qPCR and RT-qPCR assays. The study also aimed to compare decay rates observed in mesocosms with previously published laboratory microcosms, providing insights into the persistence of markers and viruses in estuarine environments. Results indicated varying decay rates between DP and HCB mesocosms, with HF183 exhibiting relatively faster decay rates compared to other markers and enteric viruses in sunlight and dark mesocosms. In DP mesocosms, HF183 decayed the fastest, contrasting with PMMoV, which exhibited the slowest. Sunlight induced higher decay rates for all markers and viruses in DP mesocosms. In HCB sunlight mesocosms, HF183 nucleic acid decayed most rapidly compared to other markers and enteric viruses. In dark mesocosms, crAssphage showed the fastest decay, while PMMoV decayed at the slowest rate in both sunlight and dark mesocosms. Comparisons with laboratory microcosms revealed faster decay of markers and enteric viruses in laboratory microcosms than the mesocosms, except for crAssphage and HAdV 40/41 in dark, and PMMoV in sunlight mesocosms. The study concludes that decay rates of markers and enteric viruses vary between estuarine mesocosms, emphasizing the impact of sunlight exposure, which was potentially influenced by the elevated turbidity at HCB estuarine waters. The generated decay rates contribute valuable insights for establishing site-specific risk-based thresholds of human wastewater-associated markers.
    MeSH term(s) Humans ; Animals ; Female ; Wastewater ; Environmental Monitoring ; Chickens ; Australia ; Enterovirus ; Viruses ; Bacteriophages ; Water Microbiology ; Feces ; Tobamovirus
    Chemical Substances Wastewater
    Language English
    Publishing date 2024-03-02
    Publishing country Netherlands
    Document type Journal Article
    ZDB-ID 121506-1
    ISSN 1879-1026 ; 0048-9697
    ISSN (online) 1879-1026
    ISSN 0048-9697
    DOI 10.1016/j.scitotenv.2024.171389
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  5. Article ; Online: The lavatory lens: Tracking the global movement of pathogens via aircraft wastewater

    Bivins, Aaron / Morfino, Robert / Franklin, Andrew / Simpson, Stuart / Ahmed, Warish

    Critical Reviews in Environmental Science and Technology. 2024 Feb. 16, v. 54, no. 4 p.321-341

    2024  

    Abstract: Modern commercial air travel connects disparate human populations. The global airline industry transported as many as 4.5 billion passengers annually in the years leading up to the COVID-19 pandemic. While such connections are convenient for commerce and ...

    Abstract Modern commercial air travel connects disparate human populations. The global airline industry transported as many as 4.5 billion passengers annually in the years leading up to the COVID-19 pandemic. While such connections are convenient for commerce and tourism, air travel networks can also be efficient distributors of infectious diseases. During the COVID-19 pandemic, public health agencies used multi-layered control strategies to manage the risk of COVID-19 transmission associated with air travel. Simultaneously, the surveillance of aircraft wastewater was further developed as a promising new method to screen for COVID-19, including newly emerging lineages, among international travelers. Herein, we review the potential of aircraft wastewater for public health surveillance. The known itinerary and defined passenger population along with the highly concentrated waste stream and ease of sampling during routine ground handling make aircraft wastewater a strategic opportunity for unintrusive surveillance of the global circulation of human pathogens. We estimate in the case of a fecal- or urine-shed pathogen, surveying 10% of all global long-haul flight passengers would require sampling from 3,500 and 1,250 flights per week, respectively. In the case of the United States, achieving 10% coverage of all international arrivals would require sampling from 925 and 322 flights per week for each shedding pathway, respectively. Aircraft wastewater surveillance can also be integrated with network and infectious disease models to better target traditional public health control measures during epidemic onset. Given the demonstrated potential for public good and the tremendous economic costs of epidemics, governments should consider international collaboration and investment to create a global aircraft wastewater surveillance system.
    Keywords COVID-19 infection ; air transportation ; aircraft ; flight ; humans ; monitoring ; pathogens ; public health ; risk ; tourism ; trade ; wastewater ; air travel ; infectious disease ; sentinel surveillance ; wastewater surveillance ; Frederic Coulon and Lena Q. Ma
    Language English
    Dates of publication 2024-0216
    Size p. 321-341.
    Publishing place Taylor & Francis
    Document type Article ; Online
    ZDB-ID 2030115-7
    ISSN 1547-6537 ; 1064-3389
    ISSN (online) 1547-6537
    ISSN 1064-3389
    DOI 10.1080/10643389.2023.2239129
    Database NAL-Catalogue (AGRICOLA)

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  6. Article ; Online: Wastewater-based prediction of COVID-19 cases using a highly sensitive SARS-CoV-2 RNA detection method combined with mathematical modeling.

    Ando, Hiroki / Murakami, Michio / Ahmed, Warish / Iwamoto, Ryo / Okabe, Satoshi / Kitajima, Masaaki

    Environment international

    2023  Volume 173, Page(s) 107743

    Abstract: Wastewater-based epidemiology (WBE) has the potential to predict COVID-19 cases; however, reliable methods for tracking SARS-CoV-2 RNA concentrations ( ... ...

    Abstract Wastewater-based epidemiology (WBE) has the potential to predict COVID-19 cases; however, reliable methods for tracking SARS-CoV-2 RNA concentrations (C
    MeSH term(s) Humans ; RNA, Viral ; SARS-CoV-2/genetics ; Wastewater ; COVID-19/diagnosis ; Models, Theoretical
    Chemical Substances RNA, Viral ; Wastewater
    Language English
    Publishing date 2023-01-07
    Publishing country Netherlands
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 554791-x
    ISSN 1873-6750 ; 0160-4120
    ISSN (online) 1873-6750
    ISSN 0160-4120
    DOI 10.1016/j.envint.2023.107743
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  7. Article ; Online: Microbial source tracking of untreated human wastewater and animal scats in urbanized estuarine waters.

    Ahmed, Warish / Payyappat, Sudhi / Cassidy, Michele / Harrison, Nathan / Besley, Colin

    The Science of the total environment

    2023  Volume 877, Page(s) 162764

    Abstract: The study assessed the performance characteristics of host sensitivity, host specificity and concentration for seven human wastewater- and six animal scat-associated marker genes by analysing human wastewater and animal scat samples from urban catchments ...

    Abstract The study assessed the performance characteristics of host sensitivity, host specificity and concentration for seven human wastewater- and six animal scat-associated marker genes by analysing human wastewater and animal scat samples from urban catchments of the mega-coastal city of Sydney, Australia. Absolute host sensitivity was exhibited across three criteria used to assess seven human wastewater-associated marker genes of cross-assembly phage (CrAssphage), human adenovirus (HAdV), Bacteroides HF183 (HF183), human polyomavirus (HPyV), Lachnospiraceae (Lachno3), Methnobrevibacter smithii nifH (nifH) and pepper mild mottle virus (PMMoV). In contrast, only the horse scat-associated marker gene Bacteroides HoF597 (HoF597) exhibited absolute host sensitivity. The absolute host specificity value of 1.0 was returned for the wastewater-associated marker genes of HAdV, HPyV, nifH and PMMoV for each of the three applied host specificity calculation criteria, while values of >0.9 were returned for CrAssphage and Lachno3. Ruminants and cow scat-associated marker genes of BacR and CowM2, respectively exhibited the absolute host specificity value of 1.0. Concentrations of Lachno3 were greater in most human wastewater samples followed by CrAssphage, HF183, nifH, HPyV, PMMoV and HAdV. Human wastewater marker genes were detected in several scat samples from cats and dogs, and this suggests concordant sampling of animal scat-associated marker genes and at least two human wastewater-associated marker genes will be required to assist in interpretation of fecal sources in environmental waters. A greater prevalence, together with several samples with greater concentrations of human wastewater-associated marker genes PMMoV and CrAssphage warrant consideration by water quality managers for the detection of diluted human fecal pollution in estuarine waters.
    MeSH term(s) Cattle ; Female ; Humans ; Cats ; Animals ; Dogs ; Horses ; Wastewater ; Water Pollution/analysis ; Sewage/analysis ; Water Quality ; Australia ; Polyomavirus ; Bacteriophages ; Feces/chemistry ; Water Microbiology ; Environmental Monitoring
    Chemical Substances Wastewater ; Sewage
    Language English
    Publishing date 2023-03-11
    Publishing country Netherlands
    Document type Journal Article
    ZDB-ID 121506-1
    ISSN 1879-1026 ; 0048-9697
    ISSN (online) 1879-1026
    ISSN 0048-9697
    DOI 10.1016/j.scitotenv.2023.162764
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  8. Article ; Online: Developing a novel Bifidobacterium phage quantitative polymerase chain reaction-based assay for tracking untreated wastewater.

    Li, Xiang / Ahmed, Warish / Wu, Ziqi / Xia, Yu

    The Science of the total environment

    2022  Volume 838, Issue Pt 2, Page(s) 155815

    Abstract: Microbial source tracking (MST) tools provide insights on fecal pollution levels in aquatic environments using predominantly quantitative PCR (qPCR) assays that target host-associated molecular marker genes. Existing wastewater-associated marker genes ... ...

    Abstract Microbial source tracking (MST) tools provide insights on fecal pollution levels in aquatic environments using predominantly quantitative PCR (qPCR) assays that target host-associated molecular marker genes. Existing wastewater-associated marker genes have shown limited or significant cross-reactions with non-human fecal samples. In this study, we mined the current Gut Phage Database (GPD) and designed a novel untreated wastewater-specific Bifidobacterium phage qPCR assay (i.e., Bifi assay). The sensitivity and specificity of the Bifi marker genes were assessed by collectively analyzing untreated (n = 33) and treated (n = 15) wastewater and non-human fecal samples (i.e., Rabbit, mouse, cow, horse, pig, chicken, sheep, dog, deer, kangaroos; n = 113) in Shenzhen, Guangdong Province, China and Brisbane, Australia. Bifi assay revealed 100% host-specificity against non-human fecal samples collected from Shenzhen and Brisbane. Furthermore, this marker gene was also detected in all untreated and treated wastewater samples, whose concentrations ranged from 5.54 to 6.83 log
    MeSH term(s) Animals ; Bacteriophages/genetics ; Bifidobacterium/genetics ; Deer ; Dogs ; Environmental Monitoring/methods ; Feces/microbiology ; Horses/genetics ; Mice ; Rabbits ; Real-Time Polymerase Chain Reaction/methods ; Sewage/microbiology ; Sheep ; Swine ; Waste Water/analysis ; Water Microbiology ; Water Pollution/analysis
    Chemical Substances Sewage ; Waste Water
    Language English
    Publishing date 2022-05-10
    Publishing country Netherlands
    Document type Journal Article
    ZDB-ID 121506-1
    ISSN 1879-1026 ; 0048-9697
    ISSN (online) 1879-1026
    ISSN 0048-9697
    DOI 10.1016/j.scitotenv.2022.155815
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  9. Article ; Online: Harnessing wastewater surveillance to detect viral diseases in livestock settings.

    Ahmed, Warish / Liu, Yawen / Smith, Wendy / Ingall, Wayne / Belby, Michael / Bivins, Aaron / Bertsch, Paul / Williams, David / Richards, Kirsty / Simpson, Stuart

    The Science of the total environment

    2024  , Page(s) 172593

    Abstract: Wastewater surveillance has evolved into a powerful tool for monitoring public health-relevant analytes. Recent applications in tracking severe acute respiratory syndrome coronavirus-2 (SARS-CoV-2) infection highlight its potential. Beyond humans, it can ...

    Abstract Wastewater surveillance has evolved into a powerful tool for monitoring public health-relevant analytes. Recent applications in tracking severe acute respiratory syndrome coronavirus-2 (SARS-CoV-2) infection highlight its potential. Beyond humans, it can be extended to livestock settings due to the increasing demand for livestock products. Livestock intensification poses risks of disease emergence. Wastewater surveillance offers non-invasive, cost-effective means to detect potential outbreaks. This approach aligns with the "One Health" paradigm, emphasizing the interconnectedness of human, animal, and ecosystem health. By monitoring viruses in livestock wastewater, early detection, prevention, and control strategies can be employed, safeguarding both animal and human health, economic stability, and international trade. This integrated "One Health" approach enhances collaboration and a comprehensive understanding of disease dynamics, supporting proactive measures in the Anthropocene era where animal and human diseases are on the rise.
    Language English
    Publishing date 2024-04-18
    Publishing country Netherlands
    Document type Journal Article
    ZDB-ID 121506-1
    ISSN 1879-1026 ; 0048-9697
    ISSN (online) 1879-1026
    ISSN 0048-9697
    DOI 10.1016/j.scitotenv.2024.172593
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  10. Article ; Online: The environment, epidemics, and human health.

    Núñez-Delgado, Avelino / Ahmed, Warish / Bontempi, Elza / Domingo, José L

    Environmental research

    2022  Volume 214, Issue Pt 2, Page(s) 113931

    Abstract: In this editorial piece, the Editors of the Virtual Special Issue (VSI) "The environment, epidemics, and human health" comment on the papers accepted for publication, which were selected after peer-reviewing among all those manuscripts submitted to the ... ...

    Abstract In this editorial piece, the Editors of the Virtual Special Issue (VSI) "The environment, epidemics, and human health" comment on the papers accepted for publication, which were selected after peer-reviewing among all those manuscripts submitted to the Special Issue. In view of the title of the VSI, it is clear that its aim goes beyond the COVID-19 pandemic, trying to explore relations among environmental aspects, any kind of epidemics, and human health. However, COVID-19 is still hitting as a global and current main issue, causing that manuscripts dealing with this disease and the SARS-CoV-2 virus are of high relevance in the whole set of research papers published.
    MeSH term(s) COVID-19/epidemiology ; Humans ; Pandemics ; SARS-CoV-2
    Language English
    Publishing date 2022-07-31
    Publishing country Netherlands
    Document type Editorial
    ZDB-ID 205699-9
    ISSN 1096-0953 ; 0013-9351
    ISSN (online) 1096-0953
    ISSN 0013-9351
    DOI 10.1016/j.envres.2022.113931
    Database MEDical Literature Analysis and Retrieval System OnLINE

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