51
|
Transmission pathways for sporadic Shiga-toxin producing E. coli infections: A systematic review and meta-analysis. Int J Hyg Environ Health 2017; 220:57-67. [DOI: 10.1016/j.ijheh.2016.10.011] [Citation(s) in RCA: 52] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2016] [Revised: 10/26/2016] [Accepted: 10/27/2016] [Indexed: 12/29/2022]
|
52
|
Investigation of a national outbreak of STEC Escherichia coli O157 using online consumer panel control methods: Great Britain, October 2014. Epidemiol Infect 2016; 145:864-871. [DOI: 10.1017/s0950268816003009] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
Abstract
SUMMARYIn October 2014, Public Health England (PHE) identified cases of Shiga toxin-producing Escherichia coli (STEC) serogroup O157 sharing a multiple locus variable-number tandem repeat analysis (MLVA) profile. We conducted a case-control study using multivariable logistic regression to calculate adjusted odds ratios (aOR) and 95% confidence intervals (CI) testing a range of exposures. Cases were defined as laboratory-confirmed STEC O157 with the implicated MLVA profile, were UK residents aged ⩾18 years with symptom onset between 25 September and 30 October 2014, and had no history of travel abroad within 5 days of symptom onset. One hundred and two cases were identified. Cases were mostly female (65%; median age 49, range 2–92 years). It was the second largest outbreak seen in England, to date, and a case-control study was conducted using market research panel controls and online survey methods. These methods were instrumental in the rapid data collection and analysis necessary to allow traceback investigations for short shelf-life products. This is a new method of control recruitment and this is the first in which it was a standalone recruitment method. The case-control study suggested a strong association between consumption of a ready-to-eat food and disease (aOR 28, 95% CI 5·0–157) from one retailer. No reactive microbiological testing of food items during the outbreak was possible due to the short shelf-life of the product. Collaboration with industrial bodies is needed to ensure timely traceback exercises to identify contamination events and initiate appropriate and focused microbiological testing and implement control measures.
Collapse
|
53
|
de Graaf M, Beck R, Caccio SM, Duim B, Fraaij PLA, Le Guyader FS, Lecuit M, Le Pendu J, de Wit E, Schultsz C. Sustained fecal-oral human-to-human transmission following a zoonotic event. Curr Opin Virol 2016; 22:1-6. [PMID: 27888698 PMCID: PMC7102779 DOI: 10.1016/j.coviro.2016.11.001] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2016] [Revised: 11/01/2016] [Accepted: 11/03/2016] [Indexed: 12/28/2022]
Abstract
Bacterial, viral and parasitic zoonotic pathogens that transmit via the fecal-oral route have a major impact on global health. However, the mechanisms underlying the emergence of such pathogens from the animal reservoir and their persistence in the human population are poorly understood. Here, we present a framework of human-to-human transmission of zoonotic pathogens that considers the factors relevant for fecal-oral human-to-human transmission route at the levels of host, pathogen, and environment. We discuss current data gaps and propose future research directions.
Collapse
Affiliation(s)
- Miranda de Graaf
- Department of Viroscience, Erasmus Medical Center, Rotterdam, The Netherlands
| | - Relja Beck
- Department for Bacteriology and Parasitology, Croatian Veterinary Institute, Zagreb, Croatia
| | - Simone M Caccio
- Department of Infectious Diseases, Istituto Superiore di Sanità, Rome, Italy
| | - Birgitta Duim
- Department of Infectious Diseases and Immunology, Faculty of Veterinary Medicine, Utrecht University, Utrecht, The Netherlands; WHO Collaborating Center for Campylobacter/OIE Reference Laboratory for Campylobacteriosis, Utrecht, The Netherlands
| | - Pieter LA Fraaij
- Department of Viroscience, Erasmus Medical Center, Rotterdam, The Netherlands; Department of Pediatrics, Erasmus Medical Center-Sophia, Rotterdam, The Netherlands
| | | | - Marc Lecuit
- Institut Pasteur, Inserm U1117, Biology of Infection Unit, Paris, France; Paris Descartes University, Sorbonne Paris Cité, Necker-Pasteur Centre for Infectiology, Necker-Enfants Malades University Hospital, Institut Imagine, Assistance Publique-Hôpitaux de Paris, Paris, France
| | | | - Emmie de Wit
- Laboratory of Virology, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Hamilton, MT, United States
| | - Constance Schultsz
- Department of Global Health and Department of Medical Microbiology, Academic Medical Center, Amsterdam, The Netherlands.
| |
Collapse
|