Major human Hepatitis A virus genotype in Hong Kong marine waters and detection by real-time PCR

Yang, Ning; Chu, Daniel Ling Ho; Wong, Minnie Man Lai; Qi, Huizhou; Wu, Rudolf S.S.; Kong, Richard Yuen Chong

doi:10.1016/j.marpolbul.2011.09.027

Cited by 8 publications

(2 citation statements)

References 35 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Indeed, both viruses have also been detected in surface waters (Brooks et al 2005;Hernandez-Morga et al 2009;Kitajima et al 2009;Lee et al 2014;Pusch et al 2005;Rose et al 2006;Rutjes et al 2009;Venter et al 2007;Yang et al 2011).…”

Section: Discussionmentioning

confidence: 99%

Hepatitis A and E Viruses in Wastewaters, in River Waters, and in Bivalve Molluscs in Italy

et al. 2015

View full text Add to dashboard Cite

Several studies have reported the detection of hepatitis A (HAV) and E (HEV) virus in sewage waters, indicating a possibility of contamination of aquatic environments. The objective of the present study was to assess the occurrence of HAV and HEV in different water environments, following the route of contamination from raw sewage through treated effluent to the surface waters receiving wastewater discharges . Bivalve molluscan shellfish samples were also analyzed, as sentinel of marine pollution. Samples were tested by RT-PCR nested type in the VP1/2A junction for HAV, and in the ORF1 and ORF2 regions for HEV. Hepatitis A RNA was detected in 12 water samples: 7/21 (33.3%) raw sewage samples, 3/21 (14.3%) treated sewage samples, and 2/27 (7.4%) river water samples. Five sequences were classified as genotype IA, while the remaining 7 sequences belonged to genotype IB. In bivalves, HAV was detected in 13/56 samples (23.2%), 12 genotype IB and one genotype IA. Whether the presence of HAV in the matrices tested indicates the potential for waterborne and foodborne transmission is unknown, since infectivity of the virus was not demonstrated. HEV was detected in one raw sewage sample and in one river sample, both belonging to genotype 3. Sequences were similar to sequences detected previously in Italy in patients with autochthonous HEV (no travel history) and in animals (swine). To our knowledge, this is the first detection of HEV in river waters in Italy, suggesting that surface water can be a potential source for exposure .

show abstract

Section: Discussionmentioning

confidence: 99%

Hepatitis A and E Viruses in Wastewaters, in River Waters, and in Bivalve Molluscs in Italy

et al. 2015

View full text Add to dashboard Cite

show abstract

“…The virus can survive for up to 60 days in tap water, over 6 weeks in river water, over 8 weeks in groundwater and even up to 30 weeks in sea water [68]. HAVs have been detected in different water environments: wastewaters [69][70][71][72][73][74], treated effluents [75], surface waters [51,[76][77][78][79][80], and drinking waters [81][82][83]. Outbreaks of hepatitis A among persons who use small private or community wells have been reported [84][85][86][87].…”

Section: Hepatitis a Virusmentioning

confidence: 99%

Emerging and potentially emerging viruses in water environments

Rosa

Fratini

Libera

et al. 2012

Annali Dell'Istituto Superiore Di Sanità

113

View full text Add to dashboard Cite

Abstract. Among microorganisms, viruses are best fit to become emerging pathogens since they are able to adapt not only by mutation but also through recombination and reassortment and can thus become able to infect new hosts and to adjust to new environments. Enteric viruses are among the commonest and most hazardous waterborne pathogens, causing both sporadic and outbreak-related illness. The main health effect associated with enteric viruses is gastrointestinal illness, but they can also cause respiratory symptoms, conjunctivitis, hepatitis, central nervous system infections, and chronic diseases. Non-enteric viruses, such as respiratory and epitheliotrophic viruses are not considered waterborne, as they are not readily transmitted to water sources from infected individuals. The present review will focus on viral pathogens shown to be transmitted through water. It will also provide an overview of viruses that had not been a concern for waterborne transmission in the past, but that may represent potentially emerging waterborne pathogens due to their occurrence and persistence in water environments.Key words: viruses, waterborne, emerging, drinking water, recreational water. Riassunto (Infezioni emergenti e potenzialmente emergenti in ambienti acquatici).I virus sono tra i principali agenti di infezioni emergenti, in quanto sono in grado di acquisire nuove caratteristiche biologiche attraverso fenomeni di mutazione, ricombinazione e riassortimento genico, adattandosi così a nuovi ospiti e nuove nicchie ecologiche. I virus enterici sono tra le principali cause di malattie infettive di origine idrica, che possono manifestarsi come casi sporadici o cluster epidemici. Le manifestazioni cliniche più comuni sono le gastroenteriti; tuttavia i virus enterici sono in grado di causare anche sintomi respiratori, congiuntiviti, epatiti, infezioni del sistema nervoso centrale e malattie croniche. La presente rassegna fornisce una panoramica dei virus enterici tradizionalmente associati alle malattie idrotrasmesse; mostra inoltre dati epidemiologici su alcuni gruppi di virus che non sono stati associati a malattie idrodiffuse in passato (inclusi virus respiratori ed epiteliotropici), ma che possono rappresentare nuovi patogeni emergenti a causa della loro presenza e persistenza in ambienti acquatici.Parole chiave: virus, malattie idrotrasmesse, patogeni emergenti, acque potabili, acque ricreative.

show abstract

Conventional and New Processes for Urban Wastewater Disinfection: Effect on Emerging and Resistant Microorganisms

Ferro

Polo-López

Fernández‐Ibáñez

2015

The Handbook of Environmental Chemistry

View full text Add to dashboard Cite

The continuous release of chemical and microbiological pollutants into the environment and the increasing demand for safe water call for effective water and wastewater treatment processes. In particular, the detection of resistant microorganisms (e.g. antibiotic-resistant bacteria) in the effluents of urban wastewater treatment plants disposed into surface water or reused (e.g. in crop irrigation) shows that conventional treatments and disinfection processes do not effectively control the spread of pathogens into the environment. There is a need for new and more effective disinfection processes and technologies. The aim of this chapter is to briefly describe some of the emerging and antimicrobial-resistant microorganisms detected in wastewater, as well as the conventional and new advanced available technologies for wastewater disinfection, and to evaluate and discuss their effect on these microorganisms. Moreover, regulations and policies on wastewater reuse are also critically discussed and compared.

show abstract

Major human Hepatitis A virus genotype in Hong Kong marine waters and detection by real-time PCR

Cited by 8 publications

References 35 publications

Hepatitis A and E Viruses in Wastewaters, in River Waters, and in Bivalve Molluscs in Italy

Hepatitis A and E Viruses in Wastewaters, in River Waters, and in Bivalve Molluscs in Italy

Emerging and potentially emerging viruses in water environments

Conventional and New Processes for Urban Wastewater Disinfection: Effect on Emerging and Resistant Microorganisms

Contact Info

Product

Resources

About