FN Archimer Export Format PT J TI An oyster-associated hepatitis A outbreak in France in 2007 BT AF GUILLOIS-BECEL, Y. COUTURIER, E. LE SAUX, Jean-Claude ROQUE-AFONSO, A. M. LE GUYADER, Soizick LE GOAS, A. PERNES, J. LE BECHEC, S. BRIAND, A. ROBERT, C. DUSSAIX, E. POMMEPUY, Monique VAILLANT, V. AS 1:1;2:2;3:3;4:4;5:3;6:5;7:5;8:5;9:1;10:5;11:4;12:3;13:2; FF 1:;2:;3:PDG-DOP-DCN-EMP-MIC;4:;5:PDG-DOP-DCN-EMP-MIC;6:;7:;8:;9:;10:;11:;12:PDG-DOP-DCN-EMP-MIC;13:; C1 CIRE, W Interreg Epidemiol Unit, Rennes, France. French Inst Publ Hlth Surveillance, InVS, Dept Infect Dis, St Maurice, France. Lab Microbiol Brest & Nantes, French Res Inst Exploitat Sea, IFREMER, Brest, France. Hop Paul Brousse, Natl Reference Ctr Hepatitis A Virus, CNR, Villejuif, France. Local Hlth & Social Serv Off Cotes Armor Dist, St Brieuc, France. C2 CIRE, FRANCE INVS, FRANCE IFREMER, FRANCE HOP PAUL BROUSSE, FRANCE DDASS 22, FRANCE SI BREST NANTES SE PDG-DOP-DCN-EMP-MIC IN WOS Ifremer jusqu'en 2018 copubli-france IF 6.153 TC 33 UR https://archimer.ifremer.fr/doc/2009/publication-6685.pdf LA English DT Article AB 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. PY 2009 PD MAR SO Eurosurveillance SN 1560-7917 PU European Centre for Disease Prevention and Control VL 14 IS 10 UT 000268015300004 BP 1 EP 6 ID 6685 ER EF