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Auteur Le Guyader FS
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Aichi virus, norovirus, astrovirus, enterovirus, and rotavirus involved in clinical cases from a French oyster-related gastroenteritis outbreak / Le Guyader FS in Journal of Clinical Microbiology [J Clin Microbiol], Vol. 46, N° 12 (12/2008)
Titre : Aichi virus, norovirus, astrovirus, enterovirus, and rotavirus involved in clinical cases from a French oyster-related gastroenteritis outbreak Type de document : Article scientifique Auteur(s) : Le Guyader FS ; Le Saux JC ; Ambert Balay K ; Krol J ; Serais O ; Parnaudeau S ; Giraudon H ; Delmas G ; Pommepuy M ; Pothier P ; Atmar RL Appartenance auteur(s) InVS DMI Année de publication : 2008 Article en page(s) : 4011-7 Langues : Anglais (eng)
in Journal of Clinical Microbiology [J Clin Microbiol] > Vol. 46, N° 12 (12/2008) . - 4011-7
Mots-clés : Gastroentérite ; Coquillage ; Epidémie ; Rotavirus ; Entérovirus ; Norovirus ; France Résumé : Following a flooding event close to a shellfish production lagoon, 205 cases of gastroenteritis were linked to oyster consumption. Twelve stool samples from different individuals were collected. Analysis showed that eight samples were positive for multiple enteric viruses, and one stool sample had seven different enteric viruses. Analysis of shellfish implicated in the outbreak allowed detection of the same diversity of enteric viruses, with some viral genomic sequences being identical to those obtained from stool sample analysis. Shellfish were contaminated by as many as five different enteric viruses. For the first time in Europe, Aichi virus was identified in oyster samples. Shellfish samples collected over 3 weeks following the outbreak showed a progressive decline in the level of virus contamination as measured by the virus diversity detected and by quantitative reverse transcription-PCR.(R.A.) PMID Pubmed : Pubmed : 18842942 Corpus : Production scientifique InVS Permalink : http://opac.invs.sante.fr/index.php?lvl=notice_display&id=1636[article]An oyster-associated hepatitis A outbreak in France in 2007 / Guillois Becel Y in Eurosurveillance [Euro Surveill], Vol. 14, N° 10 (2009)
Titre : An oyster-associated hepatitis A outbreak in France in 2007 Type de document : Article scientifique Auteur(s) : Guillois Becel Y ; Couturier E ; Le Saux JC ; Roque Afonso AM ; Le Guyader FS ; Le Goas A ; Pernes J ; Le Bechec S ; Briand A ; Robert C ; Dussaix E ; Pommepuy M ; Vaillant V Appartenance auteur(s) InVS Cire Ouest ; DMI Année de publication : 2009 Article en page(s) : 6 p. Langues : Anglais (eng)
in Eurosurveillance [Euro Surveill] > Vol. 14, N° 10 (2009) . - 6 p.
Mots-clés : Hépatite A ; Epidémie ; Coquillage ; Côtes d'Armor ; Contamination aliment Résumé : Following the notification of nine hepatitis A cases clustered in the Cotes d Armor district in northwestern France, epidemiological, environmental and microbiological investigations were set up in order to identify the source and vehicle of contamination and implement control measures. In total, 111 cases were identified in the outbreak, all of whom lived or had stayed as tourists in the Cotes d Armor district. Of the cases, 87% had eaten raw shellfish, and 81% specifically oysters. Traceback investigations carried out on raw shellfish consumed by the cases showed that the raw shellfish originated from a single shellfish farm. The shellfish were probably contaminated either in the submersible tanks or in a depuration land-based tank where they were stored. The source of contamination was not identified but shellfish could have been tainted by sewage overflows or by wastewater releases from a polluted storm sewer close to the shellfish farm or from on-site sanitation facilities. To prevent future hepatitis A outbreaks due to shellfish consumption from this area, hazards specific to each farm should be analysed. Timely information on sewage overflows should also be part of communities efforts regarding sewage collection and treatment.(R.A.) PMID Pubmed : Pubmed : 19317985 Corpus : CIRE/Production scientifique InVS Lien(s) externe(s) : http://www.eurosurveillance.org/ViewArticle.aspx?ArticleId=19144 Permalink : http://opac.invs.sante.fr/index.php?lvl=notice_display&id=1520[article]
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Detection of hepatitis E virus in sewage after an outbreak on a French island / Miura T in Food and Environmental Virology [Food Environ Virol], In Press ([10/05/2016])
Titre : Detection of hepatitis E virus in sewage after an outbreak on a French island Type de document : Article scientifique Auteur(s) : Miura T ; Lhomme S ; Le Saux JC ; Le Mehaute P ; Guillois Y ; Couturier E ; Izopet J ; Abravanel F ; Le Guyader FS Appartenance auteur(s) InVS Cire Ouest ; DMI Année de publication : 2016 Article en page(s) : 6 p. Langues : Anglais (eng)
in Food and Environmental Virology [Food Environ Virol] > In Press [10/05/2016] . - 6 p.
Résumé : A hepatitis E outbreak, which occurred on a small isolated island, provided an opportunity to evaluate the association between the number of hepatitis E cases in the community and the concentration of virus detected in sewage. Samples were collected from the different sewage treatment plants from the island and analyzed for the presence of hepatitis E (HEV) virus using real-time RT-PCR. We demonstrated that if 1-4 % of inhabitants connected to a WWTP were infected with HEV, raw sewage contained HEV at detectable levels. The finding that such a small number of infected people can contaminate municipal sewage works raises the potential of the further distribution of the virus. Indeed, investigating the routes of transmission of HEV, including the potential for sewage effluent to contain infectious HEV, may help us to better understand the epidemiology of this pathogen, which is considered to be an emerging concern in Europe. PMID Pubmed : Pubmed : 27165600 Lien externe DOI : DOI : 10.1007/s12560-016-9241-9 Corpus : CIRE/Production scientifique InVS Permalink : http://opac.invs.sante.fr/index.php?lvl=notice_display&id=12944[article]High proportion of asymptomatic infections in an outbreak of hepatitis E associated with a spit-roasted piglet, France, 2013 / Guillois Y in Clinical Infectious Diseases [Clin Infect Dis], In Press ([01/10/2015])
Titre : High proportion of asymptomatic infections in an outbreak of hepatitis E associated with a spit-roasted piglet, France, 2013 Type de document : Article scientifique Auteur(s) : Guillois Y ; Abravanel F ; Miura T ; Pavio N ; Vaillant V ; Lhomme S ; Le Guyader FS ; Rose N ; Le Saux JC ; King LA ; Izopet J ; Couturier E Appartenance auteur(s) InVS Cire Ouest ; DMI Année de publication : 2015 Article en page(s) : 18 p. Langues : Anglais (eng)
in Clinical Infectious Diseases [Clin Infect Dis] > In Press [01/10/2015] . - 18 p.
Résumé : Background: on 11 December 2013, 3 clustered cases of hepatitis E were reported on a French coastal island. They had taken part in a wedding meal where one of the courses was a spit-roasted piglet. The piglet had been stuffed with a raw stuffing partly made from the liver. Investigations were carried out to identify the vehicle of contamination and evaluate the dispersion of the Hepatitis E virus (HEV) in the environment.
Methods: a questionnaire was administered to 98 wedding participants who were asked to give a blood sample. Cases were identified by reverse transcription polymerase chain reaction and serological tests. A retrospective cohort study was conducted among 38 blood sampled participants after the exclusion of 14 participants with evidence of past HEV infection. Relative risks and 95% confidence intervals were calculated by food item consumed during the wedding through univariate and multivariable Poisson regressions. Phylogenetic analyses were performed to compare the clinical HEV strains, with strains detected in the liquid manure sampled at the farm where the piglet was born and in the untreated island wastewater.
Results: seventeen cases were identified, 70.6% were asymptomatic. Acute HEV infection was independently associated with piglet stuffing consumption (RR=1.69 [1.04-2.73], p=0.03). Clinical strains from the index cases, veterinary and environmental HEV strains were identical.
Conclusions: our investigation attributed this large HEV outbreak to the consumption of an undercooked pig liver-based stuffing. After infection, the cases became a temporary reservoir for HEV, which was detected in untreated wastewater of the island.
PMID Pubmed : Pubmed : 26429341 Lien externe DOI : DOI : 10.1093/cid/civ862 Corpus : CIRE/Production scientifique InVS Permalink : http://opac.invs.sante.fr/index.php?lvl=notice_display&id=12701[article]A norovirus oyster-related outbreak in a nursing home in France, January 2012 / Loury P in Epidemiology and Infection [Epidemiol Infect], In Press ([01/01/2015])
Titre : A norovirus oyster-related outbreak in a nursing home in France, January 2012 Type de document : Article scientifique Auteur(s) : Loury P ; Le Guyader FS ; Le Saux JC ; Ambert Balay K ; Parrot P ; Hubert B Appartenance auteur(s) InVS Cire Pays-de-la-Loire Année de publication : 2015 Langues : Anglais (eng)
in Epidemiology and Infection [Epidemiol Infect] > In Press [01/01/2015]
Mots-clés : Norovirus ; Coquillage ; Enquête épidémiologique ; Gastroentérite ; France Résumé : The presence of norovirus in shellfish is a public health concern in Europe. Here, we report the results of an investigation into a norovirus gastroenteritis outbreak following a festive lunch which affected 84 (57%) residents and staff members of a nursing home in January 2012 in France. Individuals who had eaten oysters had a significantly higher risk of developing symptoms in the following 2\b75 days than those who had not, the risk increasing with the amount eaten [relative risk 2\b72 (1\b70-4\b76) and 3\b73 (1\b76-6\b76) for 3-4 and 5-12 oysters, respectively]. In healthy individuals during those days, 29 (32%) subsequently became ill, most of whom were staff members performing activities in close contact with residents. Genogroup II noroviruses were detected in faecal samples, in a sample of uneaten oysters and in oysters from the production area. Identifying a norovirus's infectious dose may facilitate the health-related management of contaminated shellfish. PMID Pubmed : Pubmed : 25567093 Lien externe DOI : DOI : 10.1017/S0950268814003628 Corpus : CIRE/Production scientifique InVS Permalink : http://opac.invs.sante.fr/index.php?lvl=notice_display&id=12398[article]