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dc.creatorChacón Jiménez, Luz María
dc.creatorBarrantes Jiménez, Kenia
dc.creatorSantamaría Ulloa, Carolina
dc.creatorSolano Barquero, Melissa
dc.creatorReyes Lizano, Liliana
dc.creatorTaylor Castillo, Lizeth
dc.creatorValiente Álvarez, Carmen Isabel
dc.creatorSymonds, ‪Erin Michelle
dc.creatorAchí Araya, María Rosario
dc.date.accessioned2020-12-08T14:49:11Z
dc.date.available2020-12-08T14:49:11Z
dc.date.issued2020-06
dc.identifier.citationhttps://aem.asm.org/content/86/17/e00616-20es_ES
dc.identifier.citationhttps://pubmed.ncbi.nlm.nih.gov/32591380/es_ES
dc.identifier.issn0099-2240
dc.identifier.issn1098-5336
dc.identifier.urihttps://hdl.handle.net/10669/82145
dc.descriptionVersión aceptada para publicaciónes_ES
dc.description.abstractEffective wastewater management is crucial to ensure the safety of water reuse projects and 29 effluent discharge into surface waters. Multiple studies have demonstrated that municipal 30 wastewater treatment with conventional activated sludge processes is inefficient for the removal 31 of the wide spectrum of viruses in sewage. In this study, a well-accepted statistical approach was 32 used to investigate the relationship between viral indicators and human enteric viruses during 33 wastewater treatment in a resource-limited region. Influent and effluent samples from five urban 34 wastewater treatment plants (WWTP) in Costa Rica were analyzed for somatic coliphage and 35 human enterovirus, hepatitis A virus, norovirus genotype I and II, and rotavirus. All WWTP 36 provide primary treatment followed by conventional activated sludge treatment prior to 37 discharge into surface waters that are indirectly used for agricultural irrigation. The results 38 revealed a statistically significant relationship between the detection of at least one of the five 39 human enteric viruses and somatic coliphage. Multiple logistic regression and Receiver Operating Characteristic curve analysis identified a threshold of 3.0 ×103 40 (3.5-log10) somatic 41 coliphage plaque forming unit per 100 mL, which corresponded to an increased likelihood of encountering enteric viruses above the limit of detection (>1.83×102 42 virus target/100 mL). 43 Additionally, quantitative microbial risk assessment was executed for famers indirectly reusing 44 WWTP effluent that met the proposed threshold. The resulting estimated median cumulative 45 annual disease burden complied with World Health Organization recommendations. Future 46 studies are needed to validate the proposed threshold for use in Costa Rica and other regions.es_ES
dc.description.sponsorshipUniversidad de Costa Rica/[]/UCR/Costa Ricaes_ES
dc.description.sponsorshipNational Science Foundation/[OCE-1566562]/NSF/Estados Unidoses_ES
dc.language.isoen_USes_ES
dc.sourceApplied and Environmental Microbiology, vol.86(17), pp.1-52es_ES
dc.subjectWastewater treatmentes_ES
dc.subjectEnteric viruseses_ES
dc.subjectSomatic coliphagees_ES
dc.subjectFecal indicator bacteriaes_ES
dc.subjectActivated sludgees_ES
dc.subjectThreshold valueses_ES
dc.titleA somatic coliphage threshold approach to improve the management of activated sludge wastewater treatment plant effluents in resource-limited regionses_ES
dc.typeartículo científicoes_ES
dc.identifier.doi10.1128/AEM.00616-20
dc.description.procedenceUCR::Vicerrectoría de Investigación::Unidades de Investigación::Ciencias de la Salud::Instituto de Investigaciones en Salud (INISA)es_ES
dc.description.procedenceUCR::Vicerrectoría de Docencia::Salud::Facultad de Microbiologíaes_ES
dc.identifier.pmid32591380
dc.identifier.pmidPMC7440787


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