Virologia ambiental e saneamento no Brasil: uma revisão narrativa

Prado, Tatiana; Miagostovich, Marize Pereira

doi:10.1590/0102-311x00109213

Cited by 25 publications

(13 citation statements)

References 66 publications

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“…In addition, they are excreted for a long time after infection, even if diarrhea is no longer present [8,9]. Viral particles can therefore reach the aquatic environment via sewage discharge and their presence in water resources is considered a public health concern, especially in places where basic sanitation coverage is insufficient, such as Brazil [10][11][12].…”

Section: Introductionmentioning

confidence: 99%

Detection and molecular characterization of enteric adenovirus in treated wastewater in the Brazilian Federal District

et al. 2021

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Human enteric viruses, such as enteric adenoviruses (HAdV), are known to be involved with gastrointestinal disorders, especially acute gastroenteritis. Several studies have used HAdV as an indicator of water quality, since they are considered highly stable and widely distributed viruses in water matrices. The aim of this study was to detect and genotype HAdVs in water matrices impacted by discharges of treated effluents from wastewater treatment plants (WWTPs). Wastewater treatment plants from the sanitary system of the Brazilian Federal District were assessed in 2018 and 2019. Samples were collected upstream and downstream from discharge points for each WWTP. Viral concentration based on adsorption-elution and conventional PCR was used for molecular detection, and positive samples were sequenced for phylogenetic analysis. Pluviosity data for the period in which the samples were collected were obtained. Our results demonstrated the presence of HAdVs in 27.2% (61/224) of the samples. The positivity was significantly higher in downstream samples compared to upstream. Moreover, the HAdV positivity was higher in downstream samples collected from receiving water bodies impacted by secondary-level WWTPs in comparison with those impacted by tertiary-level WWTPs. Phylogenetic analysis demonstrated the presence of genotypes 40 and 41, with prevalence of HAdV genotype 41. Despite the predominance of HAdV-41, an increasing frequency of the HAdV-40 was associated with higher pluviosity. In conclusion, this study is the first documentation in the Brazilian Federal District dealing with the prevalence and diversity of HAdVs in several WWTP, along with their correlation with rainfall index.

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Section: Introductionmentioning

confidence: 99%

Detection and molecular characterization of enteric adenovirus in treated wastewater in the Brazilian Federal District

et al. 2021

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“…They can be eliminated in large quantities by infected hosts secretions and excretionshuman and animal origin. Nevertheless, viruses' markers are not yet a requirement in water quality standards in Brazil [31].…”

Section: Introductionmentioning

confidence: 99%

First description of Protoparvovirus in surface water and human Adenovirus in green leafy vegetable, Environmental Education Center - Southern Brazil

Gartner

Demoliner

Girardi

et al. 2021

Preprint

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This study analyses the presence of coliforms, Mastadenovirus (AdV) and Canine protoparvovirus (CPV) in an Environmental Education Center (EEC), which includes a city kennel in Southern Brazil, in October 2017 and February 2018. In both collections were analyzed surface water at AdV (human and canine species), CPV, total (TC) and fecal coliforms (FC) presence; lettuce at AdV; and dogs stool at canine AdV (CAV) and CPV. In total, 67 samples were analyzed: 33 dog stool samples; 10 points of surface water and 24 fractions (root, stem and leaves) originated of eight lettuce. Coliforms and viral analyses were performed by Colilert and PCR assays, respectively. Amplicon was sequenced, and species/types of virus were characterized. TC and FC were detected in all surface water in at least one of the collections. Occurrence of viruses was of the 34.3% (23/67) in all samples. HAdV-C was observed in 13% [2/23] (water sample); HAdV-E in 8,7% (2/23) – water and lettuce; CAV-1 in 13% (3/23) – two stool samples and one water sample; and CPV-2a in 56.5% (13/23) – dog stools. Raccoon CPV-like and AdV (not characterized) were detected in one surface water sample and one dog stool sample, respectively. As far as we know, this is the first molecular characterization of the presence of one wildlife animal Protoparvovirus in water and AdV in lettuce reported in Brazil. Detection of HAdV-E in lettuce confirmed the role of vegetables as a potential vehicle of human food-borne viral diseases. Nonetheless, more studies are needed about Raccoon CPV-like to elucidate the potential transmission and threat of this virus in wildlife and interspecies (wild and domestic).

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“…The release of untreated domestic sewage is one of the main modes of contamination of recreational water environments, causing damage to the environment and to public health [1], [2]. According to large data sets available about sanitation conditions in Brazil [3], only 44.92% of Brazil’s sewage is treated before being discharged into water bodies, and more than 100 million inhabitants do not have access to sewage collection [4]. The release of sewage without adequate treatment transmits several pathogens associated with diseases such as gastroenteritis [5], [6], [7].…”

Section: Introductionmentioning

confidence: 99%

‘Don’t put your head under water’: enteric viruses in Brazilian recreational waters

Girardi

Demoliner

Gularte

et al. 2019

New Microbes and New Infections

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Like in many other countries, virologic analyses are not routinely performed in Brazil in monitoring water quality for recreational purposes. We surveyed current research regarding viral contamination of recreational water environments in Brazil. Among the enteric viruses studied in Brazilian recreational waters, we highlight adenoviruses, rotaviruses, enteroviruses and noroviruses. Although there has been relatively little research on outbreaks related to bathing in recreational water environments in Brazil, noroviruses and adenoviruses are the viruses that are most often related to outbreaks. Better surveillance of the occurrence of enteric viruses in water could improve the assessment of risk to human health as well as indicate the sources of contamination and thus demonstrate the importance of adequate environmental sanitation.

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Virologia ambiental e saneamento no Brasil: uma revisão narrativa

Cited by 25 publications

References 66 publications

Detection and molecular characterization of enteric adenovirus in treated wastewater in the Brazilian Federal District

Detection and molecular characterization of enteric adenovirus in treated wastewater in the Brazilian Federal District

First description of Protoparvovirus in surface water and human Adenovirus in green leafy vegetable, Environmental Education Center - Southern Brazil

‘Don’t put your head under water’: enteric viruses in Brazilian recreational waters

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