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Cantelli CP, Silva MR, Pimenta LM, Tavares GCL, Baduy GA, Duch AAS, Menezes LDM, Fialho AM, Maranhão AG, Fumian TM, Miagostovich MP, Leite JPG. Evaluation of Extraction Methods to Detect Noroviruses in Ready-to-Eat Raw Milk Minas Artisanal Cheese. FOOD AND ENVIRONMENTAL VIROLOGY 2024; 16:188-199. [PMID: 38441780 DOI: 10.1007/s12560-024-09588-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/09/2023] [Accepted: 01/26/2024] [Indexed: 06/20/2024]
Abstract
This study aimed to assess two homogenization methods to recover norovirus from Minas artisanal cheese (MAC) made with raw bovine milk obtained from four microregions of the Minas Gerais state, Brazil, with different ripening times and geographical and abiotic characteristics. For this purpose, 33 fiscal samples were artificially contaminated with norovirus GI and GII, and Mengovirus (MgV), used as an internal process control (IPC). TRIzol® reagent and Proteinase K homogenization methods were evaluated for all samples were then subjected to RNA extraction using viral magnetic beads and RT-qPCR Taqman® for viral detection/quantification. Proteinase K method showed better efficiency results for both norovirus GI and GII, with means recovery efficiency of 45.7% (95% CI 34.3-57.2%) and 41.4% (95% CI 29.1-53.6%), respectively, when compared to TRIzol method (16.6% GI, 95% CI 8.4-24.9%, and 12.3% GII, 95% CI 7.0-17.6%). The limits of detection for norovirus GI and GII for this method were 101GC/g and 103GC/g, respectively, independent of cheese origin. MgV was detected and revealed in 100% success rate in all types of cheese, with mean recovery efficiency of 25.6% for Proteinase K, and 3.8% for the TRIzol method. According to cheese origin, Triangulo Mineiro MAC had the highest mean recovery rates for the three viral targets surveyed (89% GI, 87% GII, and 51% MgV), while Serro MAC showed the lowest rates (p < 0.001). Those results indicate that the proteinase K adapted method is suitable for norovirus GI and GII detection in MAC and corroborated MgV as an applicable IPC to be used during the process.
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Affiliation(s)
- Carina Pacheco Cantelli
- Laboratory of Comparative and Environmental Virology, Oswaldo Cruz Institute - Fiocruz, Av. Brasil, 4365, Pav. Hélio & Peggy Pereira, Rio de Janeiro, RJ, 21040-360, Brazil.
| | | | - Laís Marques Pimenta
- Laboratory of Comparative and Environmental Virology, Oswaldo Cruz Institute - Fiocruz, Av. Brasil, 4365, Pav. Hélio & Peggy Pereira, Rio de Janeiro, RJ, 21040-360, Brazil
| | - Guilherme Caetano Lanzieri Tavares
- Laboratory of Comparative and Environmental Virology, Oswaldo Cruz Institute - Fiocruz, Av. Brasil, 4365, Pav. Hélio & Peggy Pereira, Rio de Janeiro, RJ, 21040-360, Brazil
| | - Gabriel Assad Baduy
- Laboratory of Comparative and Environmental Virology, Oswaldo Cruz Institute - Fiocruz, Av. Brasil, 4365, Pav. Hélio & Peggy Pereira, Rio de Janeiro, RJ, 21040-360, Brazil
| | | | | | - Alexandre Madi Fialho
- Laboratory of Comparative and Environmental Virology, Oswaldo Cruz Institute - Fiocruz, Av. Brasil, 4365, Pav. Hélio & Peggy Pereira, Rio de Janeiro, RJ, 21040-360, Brazil
| | - Adriana Gonçalves Maranhão
- Laboratory of Comparative and Environmental Virology, Oswaldo Cruz Institute - Fiocruz, Av. Brasil, 4365, Pav. Hélio & Peggy Pereira, Rio de Janeiro, RJ, 21040-360, Brazil
| | - Tulio Machado Fumian
- Laboratory of Comparative and Environmental Virology, Oswaldo Cruz Institute - Fiocruz, Av. Brasil, 4365, Pav. Hélio & Peggy Pereira, Rio de Janeiro, RJ, 21040-360, Brazil
| | - Marize Pereira Miagostovich
- Laboratory of Comparative and Environmental Virology, Oswaldo Cruz Institute - Fiocruz, Av. Brasil, 4365, Pav. Hélio & Peggy Pereira, Rio de Janeiro, RJ, 21040-360, Brazil
| | - José Paulo Gagliardi Leite
- Laboratory of Comparative and Environmental Virology, Oswaldo Cruz Institute - Fiocruz, Av. Brasil, 4365, Pav. Hélio & Peggy Pereira, Rio de Janeiro, RJ, 21040-360, Brazil
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Ossio A, Flores-Rodríguez F, Heredia N, García S, Merino-Mascorro JA. Foodborne Viruses and Somatic Coliphages Occurrence in Fresh Produce at Retail from Northern Mexico. FOOD AND ENVIRONMENTAL VIROLOGY 2024; 16:109-119. [PMID: 38198031 DOI: 10.1007/s12560-023-09578-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/08/2023] [Accepted: 11/28/2023] [Indexed: 01/11/2024]
Abstract
Foodborne disease outbreaks linked to consumption of vegetables have been often attributed to human enteric viruses, such as Norovirus (NoV), Hepatitis A virus (HAV), and Rotavirus (RoV). Information about the occurrence of these viruses is scarce in many fresh-producing countries. Viral contamination detection of indicators, such as somatic coliphages, could indirectly reflect the presence of viral pathogens, being a valuable tool for better viral risk assessment in food industry. This study aimed to establish the occurrence and correlation of foodborne viruses and somatic coliphages in leafy greens in northern Mexico. A total of 320 vegetable samples were collected, resulting in 80 composite rinses, 40 of lettuce and 40 of parsley. Somatic coliphages were determined using the EPA 1602 method, while foodborne viruses (HAV, RoV, NoV GI, and GII) were determined by qPCR. The occurrence of RoV was 22.5% (9/40, mean 2.11 log gc/g) in lettuce and 20% (8/40, mean 1.91 log gc/g) in parsley. NoV and HAV were not detected in any samples. Somatic coliphages were present in all lettuce and parsley samples, with mean levels of 1.85 log PFU/100 ml and 2.28 log PFU/100 ml, respectively. Spearman analysis established the correlation of somatic coliphages and genomic copies of RoV, resulting in an r2 value of - 0.026 in lettuce and 0.349 in parsley. Although NoV or HAV were undetected in the samples, the presence of RoV is a matter of concern as leafy greens are usually eaten raw, which poses a potential risk of infection.
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Affiliation(s)
- Axel Ossio
- Laboratorio de Bioquímica y Genética de Microorganismos, Facultad de Ciencias Biológicas, Universidad Autónoma de Nuevo León, 66455, San Nicolas de los Garza, N.L., Mexico
| | - Fernanda Flores-Rodríguez
- Laboratorio de Bioquímica y Genética de Microorganismos, Facultad de Ciencias Biológicas, Universidad Autónoma de Nuevo León, 66455, San Nicolas de los Garza, N.L., Mexico
| | - Norma Heredia
- Laboratorio de Bioquímica y Genética de Microorganismos, Facultad de Ciencias Biológicas, Universidad Autónoma de Nuevo León, 66455, San Nicolas de los Garza, N.L., Mexico
| | - Santos García
- Laboratorio de Bioquímica y Genética de Microorganismos, Facultad de Ciencias Biológicas, Universidad Autónoma de Nuevo León, 66455, San Nicolas de los Garza, N.L., Mexico
| | - Jose Angel Merino-Mascorro
- Laboratorio de Bioquímica y Genética de Microorganismos, Facultad de Ciencias Biológicas, Universidad Autónoma de Nuevo León, 66455, San Nicolas de los Garza, N.L., Mexico.
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Janicka P, Baluta S, Winiarski J, Halicka-Stępień K, Pogorzelska A, Cabaj J, Pala K, Bażanów B. Sensitive electrochemical gold nanoparticle-based immunosensor for norovirus detection in food samples. RSC Adv 2024; 14:6028-6040. [PMID: 38370455 PMCID: PMC10870109 DOI: 10.1039/d3ra08586d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2023] [Accepted: 02/12/2024] [Indexed: 02/20/2024] Open
Abstract
Norovirus (NoV) infection is one of the most common non-bacterial causes of gastroenteritis among the population worldwide. From the point of view of medical diagnostics, it is important to develop a system that would sensitively and selectively detect norovirus from a patient's sample in order to control and limit its spread. In this paper, we present a stable and sensitive NoV (mouse model) detection matrix in infected food samples. The bio-platform was made of a modified gold electrode with a self-assembled l-cysteine monolayer, covered with gold nanoparticles, a linker and an antibody specific to the VP1 surface protein of the virus. Binding of the VP1 protein to the antibody caused a decrease in the current strength confirmed by electrochemical techniques - cyclic voltammetry (CV) and differential pulse voltammetry. The reduction of the current was proportional to the concentration of NoV sample. The biosensors showed high sensitivity and linearity in a range from 1 × 10-9 to 1 × 10-18 TCID50, with the detection limit of 1 × 10-18 TCID50. CV showed a diffusion-controlled process. In addition, each modification step was confirmed by scanning electron microscopy, electrochemical impedance spectroscopy, and CV. The described immunosensor showed excellent recovery values, good linearity and long-term stability, crucial parameters for biosensor construction.
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Affiliation(s)
- Paulina Janicka
- Department of Pathology, University of Environmental and Life Sciences in Wrocław Norwida 31 50-375 Wrocław Poland
- Food4Future Technologies Sp. z o. o. ul. Tarasa Szewczenki 24 51-351 Wrocław Poland
| | - Sylwia Baluta
- Institute of Advanced Materials, Wrocław University of Science and Technology Wybrzeże Wyspiańskiego 27 50-370 Wrocław Poland
| | - Juliusz Winiarski
- Group of Surface Technology, Department of Advanced Material Technologies, Wroclaw University of Science and Technology Wybrzeże Wyspiańskiego 27 Wroclaw 50-370 Poland
| | - Kinga Halicka-Stępień
- Institute of Advanced Materials, Wrocław University of Science and Technology Wybrzeże Wyspiańskiego 27 50-370 Wrocław Poland
| | - Aleksandra Pogorzelska
- Department of Pathology, University of Environmental and Life Sciences in Wrocław Norwida 31 50-375 Wrocław Poland
| | - Joanna Cabaj
- Institute of Advanced Materials, Wrocław University of Science and Technology Wybrzeże Wyspiańskiego 27 50-370 Wrocław Poland
| | - Katarzyna Pala
- Water Science and Technology Institute- H2O SciTech ul. Tarasa Szewczenki 24 51-351 Wrocław Poland
| | - Barbara Bażanów
- Department of Pathology, University of Environmental and Life Sciences in Wrocław Norwida 31 50-375 Wrocław Poland
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Dubbert T, Meester M, Smith RP, Tobias TJ, Di Bartolo I, Johne R, Pavoni E, Krumova-Valcheva G, Sassu EL, Prigge C, Aprea G, May H, Althof N, Ianiro G, Żmudzki J, Dimitrova A, Alborali GL, D'Angelantonio D, Scattolini S, Battistelli N, Burow E. Biosecurity measures to control hepatitis E virus on European pig farms. Front Vet Sci 2024; 11:1328284. [PMID: 38983773 PMCID: PMC11231669 DOI: 10.3389/fvets.2024.1328284] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2023] [Accepted: 01/29/2024] [Indexed: 07/11/2024] Open
Abstract
Hepatitis E virus (HEV) genotype 3 is a prevalent zoonotic pathogen in European pig farms, posing a significant public health risk primarily through the foodborne route. The study aimed to identify effective biosecurity measures for controlling HEV transmission on pig farms, addressing a critical gap in current knowledge. Utilizing a cross-sectional design, fecal samples from gilts, dry sows, and fatteners were collected on 231 pig farms of all farm types across nine European countries. Real-time RT-PCR was employed to test these samples for HEV. Simultaneously, a comprehensive biosecurity questionnaire captured data on various potential measures to control HEV. The dependent variable was HEV risk, categorized as lower or higher based on the percentage of positive pooled fecal samples on each farm (25% cut-off). The data were analyzed using generalized linear models (one for finisher samples and one for all samples) with a logit link function with country and farm type as a priori fixed factors. The results of the final multivariable models identified key biosecurity measures associated with lower HEV risk, which were the use of a hygienogram in the breeding (OR: 0.06, p = 0.001) and/or fattening area after cleaning (OR: 0.21, p = 0.019), the presence of a quarantine area (OR: 0.29, p = 0.025), testing and/or treating purchased feed against Salmonella (OR: 0.35, p = 0.021), the presence of other livestock species on the farm, and having five or fewer persons in charge of the pigs. Contrary to expectations, some biosecurity measures were associated with higher HEV risk, e.g., downtime of 3 days or longer after cleaning in the fattening area (OR: 3.49, p = 0.005) or mandatory handwashing for farm personnel when changing barn sections (OR: 3.4, p = 0.026). This novel study unveils critical insights into biosecurity measures effective in controlling HEV on European pig farms. The identification of both protective and risk-associated measures contributes to improving strategies for managing HEV and underscores the complexity of biosecurity in pig farming.
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Affiliation(s)
- Tamino Dubbert
- Department of Biological Safety, German Federal Institute for Risk Assessment (BfR), Berlin, Germany
| | - Marina Meester
- Department of Population Health Sciences, Faculty of Veterinary Medicine, Utrecht University (UU), Utrecht, Netherlands
| | - Richard Piers Smith
- Department of Epidemiological Sciences, Animal and Plant Health Agency (APHA) - Weybridge, Surrey, United Kingdom
| | - Tijs J Tobias
- Department of Population Health Sciences, Faculty of Veterinary Medicine, Utrecht University (UU), Utrecht, Netherlands
| | - Ilaria Di Bartolo
- Department of Food Safety, Nutrition and Veterinary Public Health, Istituto Superiore di Sanità (ISS), Rome, Italy
| | - Reimar Johne
- Department of Biological Safety, German Federal Institute for Risk Assessment (BfR), Berlin, Germany
| | - Enrico Pavoni
- Food Safety Department, Experimental Zooprophylactic Institute of Lombardy and Emilia Romagna (IZSLER), Brescia, Italy
| | - Gergana Krumova-Valcheva
- National Food Safety Center, National Diagnostic and Research Veterinary Medical Institute (NDRVMI), Sofia, Bulgaria
| | - Elena Lucia Sassu
- Institute for Veterinary Disease Control, Austrian Agency for Health and Food Safety (AGES), Mödling, Austria
| | - Christopher Prigge
- Institute for Veterinary Disease Control, Austrian Agency for Health and Food Safety (AGES), Mödling, Austria
| | - Giuseppe Aprea
- Department of Food Safety, Experimental Zooprophylactic Institute of Abruzzo and Molise 'G. Caporale' (IZS), Teramo, Italy
| | - Hannah May
- Department of Epidemiological Sciences, Animal and Plant Health Agency (APHA) - Weybridge, Surrey, United Kingdom
| | - Nadine Althof
- Department of Biological Safety, German Federal Institute for Risk Assessment (BfR), Berlin, Germany
| | - Giovanni Ianiro
- Department of Food Safety, Nutrition and Veterinary Public Health, Istituto Superiore di Sanità (ISS), Rome, Italy
| | - Jacek Żmudzki
- Department of Swine Diseases, National Veterinary Research Institute (PIWet), Puławy, Poland
| | - Albena Dimitrova
- National Food Safety Center, National Diagnostic and Research Veterinary Medical Institute (NDRVMI), Sofia, Bulgaria
| | - Giovanni Loris Alborali
- Food Safety Department, Experimental Zooprophylactic Institute of Lombardy and Emilia Romagna (IZSLER), Brescia, Italy
| | - Daniela D'Angelantonio
- Department of Food Safety, Experimental Zooprophylactic Institute of Abruzzo and Molise 'G. Caporale' (IZS), Teramo, Italy
| | - Silvia Scattolini
- Department of Food Safety, Experimental Zooprophylactic Institute of Abruzzo and Molise 'G. Caporale' (IZS), Teramo, Italy
| | - Noemi Battistelli
- Department of Food Safety, Experimental Zooprophylactic Institute of Abruzzo and Molise 'G. Caporale' (IZS), Teramo, Italy
| | - Elke Burow
- Department of Biological Safety, German Federal Institute for Risk Assessment (BfR), Berlin, Germany
- Department for Rural Development and Agriculture, Ministry of Agriculture, Environment and Climate Protection of the State of Brandenburg (MLUK), Potsdam, Germany
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Nemes K, Persson S, Simonsson M. Hepatitis A Virus and Hepatitis E Virus as Food- and Waterborne Pathogens-Transmission Routes and Methods for Detection in Food. Viruses 2023; 15:1725. [PMID: 37632066 PMCID: PMC10457876 DOI: 10.3390/v15081725] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2023] [Revised: 08/07/2023] [Accepted: 08/09/2023] [Indexed: 08/27/2023] Open
Abstract
Foodborne viruses are an important threat to food safety and public health. Globally, there are approximately 5 million cases of acute viral hepatitis due to hepatitis A virus (HAV) and hepatitis E virus (HEV) every year. HAV is responsible for numerous food-related viral outbreaks worldwide, while HEV is an emerging pathogen with a global health burden. The reported HEV cases in Europe have increased tenfold in the last 20 years due to its zoonotic transmission through the consumption of infected meat or meat products. HEV is considered the most common cause of acute viral hepatitis worldwide currently. This review focuses on the latest findings on the foodborne transmission routes of HAV and HEV and the methods for their detection in different food matrices.
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Affiliation(s)
- Katalin Nemes
- European Union Reference Laboratory for Foodborne Viruses, Swedish Food Agency, Dag Hammarskjölds väg 56 A, 75237 Uppsala, Sweden; (S.P.); (M.S.)
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Hennechart-Collette C, Dehan O, Fraisse A, Martin-Latil S, Perelle S. Development of an Extraction Method to Detect Hepatitis A Virus, Hepatitis E Virus, and Noroviruses in Fish Products. Microorganisms 2023; 11:microorganisms11030624. [PMID: 36985198 PMCID: PMC10051274 DOI: 10.3390/microorganisms11030624] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2022] [Revised: 02/16/2023] [Accepted: 02/24/2023] [Indexed: 03/05/2023] Open
Abstract
Viruses are a leading cause of foodborne disease worldwide. Hepatitis viruses (hepatitis A (HAV) and hepatitis E (HEV)) and human norovirus are recognized as the main viruses of public health concern in food hygiene. ISO 15216 approved procedures are not validated for detection of HAV and human norovirus in foodstuffs, such as fishes, leading to an inability to ensure the safety of these products. This study aimed to provide a rapid and sensitive method for detecting these targets in fish products. An existing method that includes proteinase K treatment was selected for further validation using artificially contaminated fish products, according to the recent international standard ISO 16140-4. Recovery efficiencies in pure RNA extracts of viruses ranged from 0.2% to 66.2% for HAV, 4.0% to 100.0% for HEV, 2.2% to 100.0% for norovirus GI, and 0.2% to 12.5% for norovirus GII. LOD50 values were between 144 and 8.4 × 104 genome copies/g for HAV and HEV, and 104 and 2.0 × 103 copies/g for norovirus GI and norovirus GII, respectively. LOD95 values were between 3.2 × 103 and 3.6 × 105 genome copies/g for HAV and HEV, and between 8.8 × 103 and 4.4 × 104 genome copies/g for norovirus GI and norovirus GII, respectively. The method developed here was successfully validated in various fish products and can be applied for routine diagnostic needs.
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Raymond P, Paul S, Guy RA. Impact of Capsid and Genomic Integrity Tests on Norovirus Extraction Recovery Rates. Foods 2023; 12:foods12040826. [PMID: 36832901 PMCID: PMC9957022 DOI: 10.3390/foods12040826] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2023] [Revised: 02/08/2023] [Accepted: 02/10/2023] [Indexed: 02/17/2023] Open
Abstract
Human norovirus (HuNoV) is the leading pathogen responsible for food-borne illnesses. However, both infectious and non-infectious HuNoV can be detected by RT-qPCR. This study evaluated the efficiency of different capsid integrity treatments coupled with RT-qPCR or a long-range viral RNA (long RT-qPCR) detection to reduce the recovery rates of heat inactivated noroviruses and fragmented RNA. The three capsid treatments evaluated (RNase, the intercalating agent PMAxx and PtCl4) reduced the recovery of heat inactivated HuNoV and murine norovirus (MNV) spiked on lettuce, when combined with the ISO 15216-1:2017 extraction protocols. However, PtCl4 also reduced non-heat-treated noroviruses recovery as estimated by RT-qPCR. The PMAxx and RNase treatments had a similar effect on MNV only. The most efficient approaches, the RNase and PMAxx treatments, reduced the heat-inactivated HuNoV recovery rates estimated using RT-qPCR by 2 and >3 log, respectively. The long RT-qPCR detection approach also reduced the recovery rates of heat inactivated HuNoV and MNV by 1.0 and 0.5 log, respectively. Since the long-range viral RNA amplification could be applied to verify or confirm RT-qPCR results, it also provides some advantages by reducing the risk of false positive HuNoV results.
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Affiliation(s)
- Philippe Raymond
- St-Hyacinthe Laboratory—Food Virology, Canadian Food Inspection Agency (CFIA), St-Hyacinthe, QC J2S 8E3, Canada
- Correspondence:
| | - Sylvianne Paul
- St-Hyacinthe Laboratory—Food Virology, Canadian Food Inspection Agency (CFIA), St-Hyacinthe, QC J2S 8E3, Canada
| | - Rebecca A. Guy
- National Microbiology Laboratory, Division of Enteric Diseases, Public Health Agency of Canada (PHAC), Guelph, ON N1G 3W4, Canada
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Luz IS, Miagostovich MP. Evaluation of heat treatment for inactivation of norovirus genogroup II in foods. Braz J Microbiol 2022; 53:1159-1165. [PMID: 35312990 PMCID: PMC9433490 DOI: 10.1007/s42770-022-00731-3] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2021] [Accepted: 03/09/2022] [Indexed: 11/02/2022] Open
Abstract
The effective food processing technology is a key step in eliminating human noroviruses in foods mainly due to their stability in diverse environmental conditions. The aim of this study was to evaluate the effect of rising temperatures for inactivation of norovirus genogroup (G) II and murine norovirus 1 in samples of tomato sauce (72-74 °C for 1 min) and ground meat (100 °C for 30 min). Spiking experiments were carried out in triplicate using TRIzol® reagent method associated with quantitative polymerase chain reaction (qPCR) TaqMan™ system combined with previous free RNA digestion. Success rate and efficiency recoveries of both viruses as well limit of detection of a method for each matrix were also conducted. The heat treatment applied here proved to be efficient to reduce the burden of norovirus GII in a range of 1-4 log10 genomic copies per gram (percentage ranging from 0.45 to 104.54%) in both matrices. The experiments in this study showed that the results of norovirus GII and murine norovirus 1 in tomato sauce and ground meat tested during thermal treatments cannot be generalized to other food matrices, since there may be food-specific protective effects, as the presence of different components, that can interfere in virus inactivation. Studies using different food matrices reinforce the importance to investigate viruses' inactivation thermal processes in foods due to the resistance of these viruses to adverse conditions, contributing to food security in food virology.
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Affiliation(s)
- Isabelle S Luz
- Laboratory of Comparative and Environmental Virology, Oswaldo Cruz Institute, Oswaldo Cruz Foundation/FIOCRUZ, Rio de Janeiro, 21040-360, Brazil.
| | - Marize P Miagostovich
- Laboratory of Comparative and Environmental Virology, Oswaldo Cruz Institute, Oswaldo Cruz Foundation/FIOCRUZ, Rio de Janeiro, 21040-360, Brazil
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Effect of mismatch between types of viral nucleic acid and intended targets of extraction kits on polymerase chain reaction-based testing. Biotechniques 2022; 73:75-79. [PMID: 35762215 DOI: 10.2144/btn-2022-0006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Lab personnel generally select an extraction kit based on the nucleic acid (NA) type of the target. This study investigated the effect of mismatch between the NA type of the target and the intended target NA of the extraction kit on the polymerase chain reaction outcome. DNA, RNA and total NA extraction kits manufactured by the same company were used to isolate NA from serial dilutions of four viruses representing different genome types. All extracts were tested for the viruses by either conventional or real-time polymerase chain reactions with and without reverse transcription. While the DNA kit specifically isolated DNA from samples, the RNA kit extracted both DNA and RNA as efficiently as the total NA kit, suggesting that RNA kits can be an economical alternative.
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10
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Hrdy J, Vasickova P. Virus detection methods for different kinds of food and water samples – The importance of molecular techniques. Food Control 2022. [DOI: 10.1016/j.foodcont.2021.108764] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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11
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Sun C, Chen J, Li H, Fang L, Wu S, Jayavanth P, Tang S, Sanchez G, Wu X. One-step duplex RT-droplet digital PCR assay for the detection of norovirus GI and GII in lettuce and strawberry. Food Microbiol 2021; 94:103653. [PMID: 33279078 DOI: 10.1016/j.fm.2020.103653] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2020] [Revised: 10/01/2020] [Accepted: 10/01/2020] [Indexed: 11/17/2022]
Abstract
The study was designed to develop a sensitive one-step duplex reverse transcription droplet digital polymerase chain reaction (RT-ddPCR) to detect norovirus genogroup I and II (NoV GI and GII) in lettuce and strawberry. The specificity, sensitivity, repeatability and robustness of the assay was compared with RT-qPCR. The lowest concentration detected by RT-ddPCR for NoV GI and NoV GII were 4.68 and 8.47 copies/μL respectively, much lower than that of RT-qPCR with a number of 46.8 and 84.7 copies/μL, respectively. Lettuce and strawberry samples were artificially contaminated with NoV GI and GII suspensions, with inoculum size of 3.00 × 106 to 1.70 × 108 copies and 4.80 × 105 to 2.50 × 107 copies, respectively. Strawberry spiked with low inoculum size revealed positive results by RT-ddPCR, while recorded negative by RT-qPCR. Meanwhile, RT-ddPCR also showed a higher average recovery rate for NoV in lettuce and strawberry than RT-qPCR.The limit of detection (LoDs) of RT-ddPCR for NoVs in lettuce was 2.32 × 104 copies/25g (NoV GI) and 2.36 × 104 ciopies/25g (NoV GII), and that in strawberry was 2.56 × 104 copies/25g (NoV GI) and 2.64 × 104 ciopies/25g (NoV GII), which were 10 folds lower than that of RT-qPCR. The developed duplex RT-ddPCR assay exhibited stability and increased capacity to resist inhibitors in food samples with low concentration of NoV, making it a reliable method to avoid false negative result as opposed to RT-qPCR. In conclusion, one-step RT-ddPCR method developed in this study is pertinent in detecting foodborne virus such as NoV.
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Affiliation(s)
- Chongzhen Sun
- Department of Food Science and Engineering, Jinan University, 601 Huangpu Avenue, Guangzhou, 510632, China
| | - Jiayin Chen
- Department of Food Science and Engineering, Jinan University, 601 Huangpu Avenue, Guangzhou, 510632, China
| | - Hui Li
- Institute of Pathogenic Microbiology, Guangdong Provincial Center for Disease Control and Prevention, 160 Qunxian Road, Guangzhou, 511430, China.
| | - Ling Fang
- Institute of Pathogenic Microbiology, Guangdong Provincial Center for Disease Control and Prevention, 160 Qunxian Road, Guangzhou, 511430, China
| | - Shiwei Wu
- Institute of Pathogenic Microbiology, Guangdong Provincial Center for Disease Control and Prevention, 160 Qunxian Road, Guangzhou, 511430, China
| | - Pallavi Jayavanth
- International School, Jinan University, 601 Huangpu Avenue, Guangzhou, 510632, China
| | - Shuze Tang
- Department of Food Science and Engineering, Jinan University, 601 Huangpu Avenue, Guangzhou, 510632, China
| | - Gloria Sanchez
- Department of Biotechnology, Institute of Agrochemistry and Food Technology (IATA-CSIC), Av. AgustÍn Escardino 7, 46980, Paterna, Valencia, Spain
| | - Xiyang Wu
- Department of Food Science and Engineering, Jinan University, 601 Huangpu Avenue, Guangzhou, 510632, China.
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12
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Detection of norovirus, hepatitis A and hepatitis E viruses in multicomponent foodstuffs. Int J Food Microbiol 2020; 337:108931. [PMID: 33188986 DOI: 10.1016/j.ijfoodmicro.2020.108931] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2020] [Revised: 10/16/2020] [Accepted: 10/20/2020] [Indexed: 11/21/2022]
Abstract
Among the enteric viruses implicated in foodborne outbreaks, the human norovirus and hepatitis viruses A and E (HAV and HEV) represent a serious public health concern. International standard ISO 15216 proposes methods for detecting HAV and norovirus (genogroups I and II) RNA from soft fruit, leaf, stem and bulb vegetables, bottled water or food surfaces. These methods had not previously been validated for detecting the targeted viruses in other foodstuffs such as multicomponent foods, nor for detecting other viruses in foodstuffs. The aim of this study was to characterise a method derived from the vegetable method described in ISO 15216 to detect HAV, HEV and norovirus in artificially-contaminated multicomponent foodstuffs according to the recent international standard ISO 16140-4. Results showed that the mean recovery rates for all settings did not differ according to the operator. The mean extraction yields ranged from 0.35% to 40.44% for HAV, 5.19% to 100% for HEV, 0.10% to 40.61% for norovirus GI and 0.88% to 69.16% for norovirus GII. The LOD95 was 102 genome copies/g for HAV, HEV and norovirus GII and 103 genome copies/g for norovirus GI. The LOQ was 2.90 × 104, 1.40 × 103, 1.60 × 104 and 1.30 × 104 genome copies/g for HAV, HEV, norovirus GI and norovirus GII respectively. The MNV-1 process control was detected in 120 out of 128 RNA extracts analysed and was recovered with an efficiency of between 3.83% and 50.22%. The mean inhibition rates of quantitative real-time RT-PCR reaction ranged from 3.25% to 28.70% and varied significantly with the type of food matrix. The described method could be used to detect viruses in composite food products for routine diagnosis needs.
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13
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Li Y, Cao W, Liang S, Yamasaki S, Chen X, Shi L, Ye L. Metagenomic characterization of bacterial community and antibiotic resistance genes in representative ready-to-eat food in southern China. Sci Rep 2020; 10:15175. [PMID: 33093543 PMCID: PMC7581714 DOI: 10.1038/s41598-020-72620-4] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2020] [Accepted: 08/27/2020] [Indexed: 12/31/2022] Open
Abstract
Ready-to-eat (RTE) foods have been considered to be reservoirs of antibiotic resistance bacteria, which constitute direct threat to human health, but the potential microbiological risks of RTE foods remain largely unexplored. In this study, the metagenomic approach was employed to characterize the comprehensive profiles of bacterial community and antibiotic resistance gene (ARG) in 18 RTE food samples (8 RTE meat, 7 RTE vegetables and 3 RTE fruit) in southern China. In total, the most abundant phyla in RTE foods were Proteobacteria, Firmicutes, Cyanobacteria, Bacteroidetes and Actinobacteria. 204 ARG subtypes belonging to 18 ARG types were detected with an abundance range between 2.81 × 10−5 and 7.7 × 10−1 copy of ARG per copy of 16S rRNA gene. Multidrug-resistant genes were the most predominant ARG type in the RTE foods. Chloramphenicol, macrolide-lincosamide-streptogramin, multidrug resistance, aminoglycoside, bacitracin, tetracycline and β-lactam resistance genes were dominant, which were also associated with antibiotics used extensively in human medicine or veterinary medicine/promoters. Variation partitioning analysis indicated that the join effect of bacterial community and mobile genetic elements (MGEs) played an important role in the resistome alteration. This study further deepens the comprehensive understanding of antibiotic resistome and the correlations among the antibiotic resistome, microbiota, and MGEs in the RTE foods.
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Affiliation(s)
- YiMing Li
- College of Light Industry and Food Sciences, South China University of Technology, Guangzhou, 510640, China
| | - WeiWei Cao
- Institute of Food Safety and Nutrition, Jinan University, Guangzhou, 510632, China
| | - ShuLi Liang
- School of Bioscience and Bioengineering, South China University of Technology, Guangzhou, 510006, China
| | - Shinji Yamasaki
- Graduate School of Life and Environmental Sciences, Osaka Prefecture University, Osaka, 140-0002, Japan
| | - Xun Chen
- Institute of Food Safety and Nutrition, Jinan University, Guangzhou, 510632, China
| | - Lei Shi
- Institute of Food Safety and Nutrition, Jinan University, Guangzhou, 510632, China.
| | - Lei Ye
- Institute of Food Safety and Nutrition, Jinan University, Guangzhou, 510632, China.
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14
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Rajiuddin SM, Jensen T, Hansen TB, Schultz AC. An Optimised Direct Lysis Method for Viral RNA Extraction and Detection of Foodborne Viruses on Fruits and Vegetables. FOOD AND ENVIRONMENTAL VIROLOGY 2020; 12:226-239. [PMID: 32651775 DOI: 10.1007/s12560-020-09437-x] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/30/2019] [Accepted: 07/03/2020] [Indexed: 06/11/2023]
Abstract
Detection of norovirus (NoV) and hepatitis A virus (HAV) on fruits and vegetables using current standard methodologies can be inefficient. Method optimisation focussing on ease, rapidity and increased viral RNA recovery is needed for efficient reverse transcription (RT)-qPCR detection of viruses. A simple and quick direct lysis method for RNA extraction was optimised (method A) to achieve increased viral RNA recovery and minimised RT-qPCR inhibition by increasing the volume of lysis buffer and inclusion of pectinase, Plant RNA Isolation Aid and OneStep PCR Inhibitor Removal Kit. Method A and an internal method structurally comparable to the ISO 15216 standard (method B) were compared for their efficiencies to recover viral RNA from the process controls, mengovirus (MC0) and murine norovirus (MNV), spiked in 13 types of fruits, vegetables, compound foods or seeds/nuts. All extracts (> 61) were also analysed for RT-qPCR inhibition and for natural contamination of NoV and HAV. The overall mean extraction efficiencies of MC0 and MNV were 36 ± 31 and 44 ± 38%, respectively, for method A and 9 ± 16 and 5 ± 11%, respectively, for method B. Inhibition of RT-qPCR amplification of RNA from NoV genogroup (G)I, NoV GII, and HAV ranged from 5 ± 10 to 13 ± 14% for method A and 34 ± 36 to 48 ± 40% for method B. NoV GII was detected in samples of strawberries and seaweed processed by both methods. In conclusion, the new direct lysis method showed an overall better performance compared to the modified ISO 15216 standard and should be validated for implementation in analysis of viruses in foods of plant origin.
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Affiliation(s)
- Sheikh Md Rajiuddin
- Division for Microbiology and Production, National Food Institute, Technical University of Denmark, Kemitorvet, Building 204, 2800, Kgs. Lyngby, Denmark
| | - Tenna Jensen
- Division for Food and Feed Safety, Danish Veterinary and Food Administration, Stationsparken 31-33, 2600, Glostrup, Denmark
| | - Tina Beck Hansen
- Division for Microbiology and Production, National Food Institute, Technical University of Denmark, Kemitorvet, Building 204, 2800, Kgs. Lyngby, Denmark
| | - Anna Charlotte Schultz
- Division for Microbiology and Production, National Food Institute, Technical University of Denmark, Kemitorvet, Building 204, 2800, Kgs. Lyngby, Denmark.
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15
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Luz IDS, Vasconcellos L, Medeiros VDM, Miranda CAC, Rosas CDO, Pimenta MMA, Ferreira FC, Romão CMCPA, Brandão MLL, Miagostovich MP. Assessment of the microbiological quality of natural mineral waters according to the manufacturing time of 20 L returnable packs in Brazil. FEMS Microbiol Lett 2020; 367:5873008. [PMID: 32678435 DOI: 10.1093/femsle/fnaa120] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2020] [Accepted: 07/15/2020] [Indexed: 11/14/2022] Open
Abstract
This study aimed to assess the microbiological quality of natural mineral waters commercialized in 20 L returnable packs in Brazil by investigating the presence of bacteria and viruses in packs with different manufacturing times (Tm). With this purpose, 99 water samples from 33 lots (n = 3/batch) of 15 brands, obtained from packs with three intervals of Tm, were analyzed. Total coliforms (16.2%), Pseudomonas aeruginosa (9.9%), sulphite-reducing Clostridium (5.0%) and Escherichia coli (2.0%) were detected but enterococci and norovirus GII not. Regarding brands, 11 (73.3%) presented unsatisfactory results for at least one of the lots analyzed. Pseudomonas aeruginosa analysis revealed six sequence types and strains were susceptible to all antibiotics tested and were able to produce biofilms. Human adenovirus (4) and norovirus GI (9) were also identified in nine samples randomly selected. Natural mineral waters commercialized in 20 L packs with Tm ≥ 2 years presented more microbiological contamination (P ≤ 0.012) than ones with a Tm of 0-1 year or a Tm of 1-2 years. These results suggest that the validity period of reusable 20 L packs should be reduced or that they can no longer be reused.
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16
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Battistini R, Rossini I, Listorti V, Ercolini C, Maurella C, Serracca L. HAV detection from milk-based products containing soft fruits: Comparison between four different extraction methods. Int J Food Microbiol 2020; 328:108661. [PMID: 32454367 DOI: 10.1016/j.ijfoodmicro.2020.108661] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2020] [Revised: 04/17/2020] [Accepted: 05/12/2020] [Indexed: 12/16/2022]
Abstract
Virus detection in food requires appropriate elution and concentration techniques which need to be adapted for different food matrices. ISO/TS-15216-1:2017 and ISO/TS-15216-2:2019 describe standard methods for hepatitis A virus (HAV) research in some food only. Milk-based products containing one or more types of fruit are not covered by ISO procedures, even though they can be contaminated by fruit added to these products or by the food handlers. The aim of this work was to identify an efficient method for the detection of HAV in milk-based products. Four methods were tested to recover HAV from artificially contaminated milk, yoghurt and ice cream containing soft fruits. Results showed that the efficiency of the tested methods depends on the analyzed matrix. In milk we obtained a mean recovery from 13.4% to 1.9%; method based on high speed centrifuge gave the best values. The average recovery in yoghurt was between 3.3% and 114.4%, the latter value achieved by method with beef extract at 3% as eluent. Finally, two methods gave the best results in ice cream with similar recoveries: 29.1% and 27.7% respectively. The first method used glycine as eluent while the other one was based on high speed centrifugation. The ISO method has never proved to be the most efficient in the matrices studied. Therefore, based on the results obtained, a complete rethinking of the ISO method may be necessary to improve its recovery for some products such as milk, while only small changes would be sufficient for other products, such as yoghurt and ice cream.
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Affiliation(s)
- Roberta Battistini
- Istituto Zooprofilattico Sperimentale del Piemonte, Liguria e Valle d'Aosta, Torino, Italy.
| | - Irene Rossini
- Istituto Zooprofilattico Sperimentale del Piemonte, Liguria e Valle d'Aosta, Torino, Italy
| | - Valeria Listorti
- Istituto Zooprofilattico Sperimentale del Piemonte, Liguria e Valle d'Aosta, Torino, Italy
| | - Carlo Ercolini
- Istituto Zooprofilattico Sperimentale del Piemonte, Liguria e Valle d'Aosta, Torino, Italy
| | - Cristiana Maurella
- Istituto Zooprofilattico Sperimentale del Piemonte, Liguria e Valle d'Aosta, Torino, Italy
| | - Laura Serracca
- Istituto Zooprofilattico Sperimentale del Piemonte, Liguria e Valle d'Aosta, Torino, Italy
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17
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Hennechart-Collette C, Martin-Latil S, Fraisse A, Niveau F, Perelle S. Virological analyses in collective catering outbreaks in France between 2012 and 2017. Food Microbiol 2020; 91:103546. [PMID: 32539952 DOI: 10.1016/j.fm.2020.103546] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2019] [Revised: 03/17/2020] [Accepted: 05/03/2020] [Indexed: 10/24/2022]
Abstract
Enteric viruses cause the majority of foodborne illnesses and common symptoms of many foodborne illnesses include vomiting, diarrhea, abdominal pain, and fever. Among the enteric viruses, human Norovirus (NoV) and hepatitis virus (HAV and HEV) are the main viruses suspected to cause foodborne outbreaks and represent a serious public health. The study presents survey tools of viruses in a wide variety of foodstuffs and results obtained during 56 foodborne outbreaks investigation in France between 2012 and 2017. 246 suspected foods were examined for the presence of four human enteric viruses (NoV GI and NoV GII, HAV or HEV) either using methods described in the EN ISO 15216-1 or in house methods. All viral analysis of food samples were performed with the implementation of process control and an external amplification controls. Eighteen of 56 foodborne outbreaks investigated included at least one positive food sample (16/18 NoV, 1/18 HAV and 1/18 HEV). The genomic levels of four viruses detected ranged from < 102 to 107 genome copies per g or per L. This study showed the interest to develop methods for the extraction of viruses in different foodstuffs to increase the possibility to identify the association between viral illness and food consumption.
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Affiliation(s)
| | - Sandra Martin-Latil
- Université Paris-Est, ANSES, Laboratory for food Safety, F-94700, Maisons-Alfort, France
| | - Audrey Fraisse
- Université Paris-Est, ANSES, Laboratory for food Safety, F-94700, Maisons-Alfort, France
| | - Florian Niveau
- Université Paris-Est, ANSES, Laboratory for food Safety, F-94700, Maisons-Alfort, France
| | - Sylvie Perelle
- Université Paris-Est, ANSES, Laboratory for food Safety, F-94700, Maisons-Alfort, France.
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18
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Hennechart-Collette C, Niveau F, Martin-Latil S, Fraisse A, Perelle S. Development of an extraction method to detect enteric viruses in dressed vegetables. Int J Food Microbiol 2019; 311:108349. [DOI: 10.1016/j.ijfoodmicro.2019.108349] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2019] [Revised: 08/08/2019] [Accepted: 09/05/2019] [Indexed: 01/10/2023]
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19
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Extended direct lysis method for virus detection on berries including droplet digital RT-PCR or real time RT-PCR with reduced influence from inhibitors. J Virol Methods 2019; 271:113638. [DOI: 10.1016/j.jviromet.2019.04.004] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2018] [Revised: 03/11/2019] [Accepted: 04/02/2019] [Indexed: 11/24/2022]
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20
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da Silva Luz I, Miagostovich MP. Comparison of viral elution-concentration methods for recovering noroviruses from deli meats. J Virol Methods 2018; 260:49-55. [DOI: 10.1016/j.jviromet.2018.07.001] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2018] [Revised: 07/02/2018] [Accepted: 07/02/2018] [Indexed: 12/31/2022]
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21
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Melgaço FG, Luz IS, Assis MRS, Caldas MS, Maranhão AG, Silva DAF, Brandão MLL, Medeiros VM, Rosas CO, Reis SML, Miagostovich MP. Assessment of viral and bacterial contamination of fresh and ripened semi-hard cheeses. FEMS Microbiol Lett 2018; 365:5101430. [DOI: 10.1093/femsle/fny225] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2018] [Accepted: 09/16/2018] [Indexed: 12/23/2022] Open
Affiliation(s)
- F G Melgaço
- Laboratory of Comparative and Environmental Virology, Oswaldo Cruz Institute, Av. Brasil, 4365, Pavilhão Helio e Peggy Pereira, Rio de Janeiro, RJ 21040-360, Brazil
| | - I S Luz
- Laboratory of Comparative and Environmental Virology, Oswaldo Cruz Institute, Av. Brasil, 4365, Pavilhão Helio e Peggy Pereira, Rio de Janeiro, RJ 21040-360, Brazil
| | - M R S Assis
- Laboratory of Comparative and Environmental Virology, Oswaldo Cruz Institute, Av. Brasil, 4365, Pavilhão Helio e Peggy Pereira, Rio de Janeiro, RJ 21040-360, Brazil
| | - M S Caldas
- Laboratory of Comparative and Environmental Virology, Oswaldo Cruz Institute, Av. Brasil, 4365, Pavilhão Helio e Peggy Pereira, Rio de Janeiro, RJ 21040-360, Brazil
| | - A G Maranhão
- Laboratory of Comparative and Environmental Virology, Oswaldo Cruz Institute, Av. Brasil, 4365, Pavilhão Helio e Peggy Pereira, Rio de Janeiro, RJ 21040-360, Brazil
| | - D A F Silva
- National Institute of Quality Control in Health, Fiocruz, Rio de Janeiro,RJ, 21040-360, Brazil
| | - M L L Brandão
- Laboratory of Viral Vaccines, Biopharmaceuticals and Cell Culture, Department of Immunology, National Institute of Quality Control in Health, Fiocruz, Rio de Janeiro, RJ 21040-360, Brazil
| | - V M Medeiros
- National Institute of Quality Control in Health, Fiocruz, Rio de Janeiro,RJ, 21040-360, Brazil
| | - C O Rosas
- National Institute of Quality Control in Health, Fiocruz, Rio de Janeiro,RJ, 21040-360, Brazil
| | - S M L Reis
- National Institute of Quality Control in Health, Fiocruz, Rio de Janeiro,RJ, 21040-360, Brazil
| | - M P Miagostovich
- Laboratory of Comparative and Environmental Virology, Oswaldo Cruz Institute, Av. Brasil, 4365, Pavilhão Helio e Peggy Pereira, Rio de Janeiro, RJ 21040-360, Brazil
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22
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Moor D, Liniger M, Baumgartner A, Felleisen R. Screening of Ready-to-Eat Meat Products for Hepatitis E Virus in Switzerland. FOOD AND ENVIRONMENTAL VIROLOGY 2018; 10:263-271. [PMID: 29492902 PMCID: PMC6096950 DOI: 10.1007/s12560-018-9340-x] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/25/2017] [Accepted: 02/21/2018] [Indexed: 05/21/2023]
Abstract
Seroprevalence data for pig herds suggested that there must be a relevant reservoir for hepatitis E virus (HEV) in Switzerland. To know more about the viral presence in ready-to-eat meat products, we screened pork liver sausages and raw meat sausages from the Swiss retail market for the presence of HEV. Testing was performed with a detection method where the virus extraction step was optimized. As for the performance of the improved method, the mean recovery rate for the mengovirus process control was 24.4%, whereas for HEV-inoculated sample matrices between 10.4 and 100% were achieved. The limit of detection was about 1.56 × 103 and 1.56 × 102 genome copies per gram for liver sausages and raw meat sausages, respectively. In the screening programme, HEV-RNA was detected in 10 of total 90 (11.1%) meat products, 7 of 37 (18.9%) liver sausages, and 3 of 53 (5.7%) raw meat sausages. Virus loads of up to 5.54 log10 HEV genome copies per gram were measured. All sequences retrieved from positive samples belonged to HEV genotype 3. The significance of the presented work was a current overview of the HEV prevalence in ready-to-eat meat products on the Swiss retail marked and an improvement of the extraction efficiency of the HEV detection method.
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Affiliation(s)
- Dominik Moor
- Risk Assessment Division, Federal Food Safety and Veterinary Office FSVO, Schwarzenburgstrasse 155, Bern, 3003, Switzerland.
| | - Marianne Liniger
- Risk Assessment Division, Federal Food Safety and Veterinary Office FSVO, Schwarzenburgstrasse 155, Bern, 3003, Switzerland
| | - Andreas Baumgartner
- Risk Assessment Division, Federal Food Safety and Veterinary Office FSVO, Schwarzenburgstrasse 155, Bern, 3003, Switzerland
| | - Richard Felleisen
- Risk Assessment Division, Federal Food Safety and Veterinary Office FSVO, Schwarzenburgstrasse 155, Bern, 3003, Switzerland
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23
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Summa M, Maunula L. Rapid Detection of Human Norovirus in Frozen Raspberries. FOOD AND ENVIRONMENTAL VIROLOGY 2018; 10:51-60. [PMID: 29019092 DOI: 10.1007/s12560-017-9321-5] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/12/2017] [Accepted: 10/03/2017] [Indexed: 06/07/2023]
Abstract
Raspberries have lately caused several human norovirus (HuNoV) outbreaks in Europe. In this study, we developed and evaluated for HuNoV reverse transcription (RT)-PCR detection in frozen raspberries extraction methods that have equal sensitivity but are less time-consuming than widely used methods based on polyethylene glycol (PEG) precipitation and chloroform-butanol purification. One method was applied to stored frozen raspberries linked to previous HuNoV outbreaks and berries on sale. In the virus elution-based Method 1, sparkling water eluted viruses most efficiently from the berries. Method 2, based on direct nucleic acid extraction with minor PEG supplement, yielded the highest number of positive findings (4 out of 9) at low virus concentration level of 100 genome copies HuNoV genogroup II per 25 g raspberries. Both methods showed approximately equal sensitivity to a method including PEG precipitation and chloroform-butanol purification. Two naturally contaminated berry samples linked to HuNoV outbreaks in 2006 and 2009 were still positive for HuNoV genogroup I, but all berry products purchased from a local store remained negative for HuNoV. In conclusion, this study presents two efficient and rapid methods which can be used in urgent HuNoV outbreak investigations, since the results of the virus analysis are available in a few hours.
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Affiliation(s)
- Maija Summa
- Department of Food Hygiene and Environmental Health, Faculty of Veterinary Medicine, University of Helsinki, PO Box 66, 00014, Helsinki, Finland.
| | - Leena Maunula
- Department of Food Hygiene and Environmental Health, Faculty of Veterinary Medicine, University of Helsinki, PO Box 66, 00014, Helsinki, Finland
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24
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Hida K, Papafragkou E, Kulka M. Testing for Human Norovirus and Recovery of Process Control in Outbreak-Associated Produce Items. J Food Prot 2018; 81:105-114. [PMID: 29280676 DOI: 10.4315/0362-028x.jfp-17-134] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
The development of rapid and sensitive detection methods for human noroviruses (HuNoV) in produce items is critical, especially with the recent rise in outbreaks associated with this food commodity. In this study, 50-g portions of various produce items linked to a norovirus outbreak (celery, cucumber, lettuce, grapes, and radish) were artificially inoculated with murine norovirus (MNV-1) and concentrated either by ultracentrifugation or polyethylene glycol (PEG) precipitation after elution with an alkaline Tris-glycine-beef extract buffer supplemented with pectinase. As a viral concentration step following virus elution and clarification, ultracentrifugation yielded a faster method (<8 h, including reverse transcription quantitative PCR), with MNV-1 recoveries similar to or better, than those obtained with PEG precipitation. The addition of polyvinylpyrrolidone to the elution buffer, to remove polyphenolic inhibitors, improved MNV-1 recoveries by over two- and fivefold for cucumber and grapes, respectively. However, despite MNV-1 recoveries ranging from 10 to 38% as calculated with 10-fold diluted RNA, contaminating HuNoV was not detected in any of the outbreak-associated samples tested. For store-bought produce samples, the limit of detection for artificially seeded HuNoV GII.4 was determined to be 103 copies per 50 g, with reproducible detection achieved in grapes, radish, and celery. The results support the use of ultracentrifugation as an alternative approach to PEG precipitation to concentrate norovirus from a variety of produce items.
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Affiliation(s)
- Kaoru Hida
- Division of Molecular Biology, Office of Applied Research and Safety Assessment, Center for Food Safety and Applied Nutrition, U.S. Food and Drug Administration, 8301 Muirkirk Road, Laurel, Maryland 20708, USA
| | - Efstathia Papafragkou
- Division of Molecular Biology, Office of Applied Research and Safety Assessment, Center for Food Safety and Applied Nutrition, U.S. Food and Drug Administration, 8301 Muirkirk Road, Laurel, Maryland 20708, USA
| | - Michael Kulka
- Division of Molecular Biology, Office of Applied Research and Safety Assessment, Center for Food Safety and Applied Nutrition, U.S. Food and Drug Administration, 8301 Muirkirk Road, Laurel, Maryland 20708, USA
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25
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Cheng D, Zou S, Liao N, Shi X, Chen J, Zhang Y, Sun L, Zhang R. Evaluation of an Extraction Method for the Detection of GI and GII Noroviruses in Fruit and Vegetable Salads. J Food Sci 2017; 83:393-400. [DOI: 10.1111/1750-3841.14022] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2017] [Revised: 11/24/2017] [Accepted: 11/30/2017] [Indexed: 11/27/2022]
Affiliation(s)
- Dongqing Cheng
- Coll. of Medical Technology; Zhejiang Chinese Medical Univ.; Hangzhou 310053 China
| | - Songyan Zou
- Dept. of Nutrition and Food Safety; Zhejiang Provincial Center for Disease Control and Prevention; Hangzhou 310006 China
- Coll. of Medical Technology; Zhejiang Chinese Medical Univ.; Hangzhou 310053 China
| | - Ningbo Liao
- Dept. of Nutrition and Food Safety; Zhejiang Provincial Center for Disease Control and Prevention; Hangzhou 310006 China
| | - Xiaofeng Shi
- Coll. of Medical Technology; Zhejiang Chinese Medical Univ.; Hangzhou 310053 China
| | - Jiang Chen
- Dept. of Nutrition and Food Safety; Zhejiang Provincial Center for Disease Control and Prevention; Hangzhou 310006 China
| | - Yanjun Zhang
- Dept. of Nutrition and Food Safety; Zhejiang Provincial Center for Disease Control and Prevention; Hangzhou 310006 China
| | - Liang Sun
- Dept. of Nutrition and Food Safety; Zhejiang Provincial Center for Disease Control and Prevention; Hangzhou 310006 China
| | - Ronghua Zhang
- Dept. of Nutrition and Food Safety; Zhejiang Provincial Center for Disease Control and Prevention; Hangzhou 310006 China
- Coll. of Medical Technology; Zhejiang Chinese Medical Univ.; Hangzhou 310053 China
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26
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Zheng Y, Hu Y. Development of a fast and efficient method for hepatitis A virus concentration from green onion. J Virol Methods 2017; 249:161-164. [DOI: 10.1016/j.jviromet.2017.09.013] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2017] [Revised: 07/18/2017] [Accepted: 09/13/2017] [Indexed: 02/07/2023]
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27
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Morillo SG, Luchs A, Cilli A, Ribeiro CD, de Cássia Compagnoli Carmona R, do Carmo Sampaio Tavares Timenetsky M. Norovirus GII.Pe Genotype: Tracking a Foodborne Outbreak on a Cruise Ship Through Molecular Epidemiology, Brazil, 2014. FOOD AND ENVIRONMENTAL VIROLOGY 2017; 9:142-148. [PMID: 27933493 DOI: 10.1007/s12560-016-9272-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/28/2016] [Accepted: 11/24/2016] [Indexed: 06/06/2023]
Abstract
Norovirus (NoV) is recognized as the most common cause of foodborne outbreaks. In 2014, an outbreak of acute gastroenteritis occurred on a cruise ship in Brazil, and NoV became the suspected etiology. Here we present the molecular identification of the NoV strains and the use of sequence analysis to determine modes of virus transmission. Food (cream cheese, tuna salad, grilled fish, orange mousse, and vegetables soup) and clinical samples were analyzed by ELISA, conventional RT-PCR, qRT-PCR, and sequencing. Genogroup GII NoV was identified by ELISA and conventional RT-PCR in fecal samples from 5 of 12 patients tested (41.7%), and in the orange mousse food sample by conventional RT-PCR and qRT-PCR. Two fecal GII NoV samples and the orange mousse GII NoV sample were successfully genotyped as GII.Pe (ORF 1), revealed 98.0-98.8% identities among them, and shared phylogenetically distinct cluster. Establishing the source of a NoV outbreak can be a challenging task. In this report, the molecular analysis of the partial RdRp NoV gene provided a powerful tool for genotyping (GII.Pe) and tracking of outbreak-related samples. In addition, the same fast and simple extraction methods applied to clinical samples could be successfully used for complex food matrices, and have the potential to be introduced in routine laboratories for screening foods for presence of NoV.
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Affiliation(s)
- Simone Guadagnucci Morillo
- Enteric Diseases Laboratory, Virology Center, Adolfo Lutz Institute, Avenida Dr Arnaldo, No 355, São Paulo, SP, CEP 01246-902, Brazil.
| | - Adriana Luchs
- Enteric Diseases Laboratory, Virology Center, Adolfo Lutz Institute, Avenida Dr Arnaldo, No 355, São Paulo, SP, CEP 01246-902, Brazil.
| | - Audrey Cilli
- Enteric Diseases Laboratory, Virology Center, Adolfo Lutz Institute, Avenida Dr Arnaldo, No 355, São Paulo, SP, CEP 01246-902, Brazil
| | - Cibele Daniel Ribeiro
- Enteric Diseases Laboratory, Virology Center, Adolfo Lutz Institute, Avenida Dr Arnaldo, No 355, São Paulo, SP, CEP 01246-902, Brazil
| | - Rita de Cássia Compagnoli Carmona
- Enteric Diseases Laboratory, Virology Center, Adolfo Lutz Institute, Avenida Dr Arnaldo, No 355, São Paulo, SP, CEP 01246-902, Brazil
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Yazdi M, Yavarmanesh M, Bahreini M, Mohebbi M. Preliminary Source Tracking of Male-Specific (F +) RNA Coliphage on Lettuce as a Surrogate of Enteric Viruses Using Reverse Transcription-PCR. FOOD AND ENVIRONMENTAL VIROLOGY 2017; 9:103-113. [PMID: 27815782 DOI: 10.1007/s12560-016-9267-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/12/2016] [Accepted: 10/19/2016] [Indexed: 06/06/2023]
Abstract
The aim of this research was to preliminary track fecal source male-specific F+RNA coliphages including human and animals in lettuce. At first, two published virus extraction procedures of ultracentrifugation and PEG precipitation were compared using DAL assay for determining the recovery efficiency in lettuce spiked artificially with three concentrations (102, 104, 106 pfu/100 ml) of MS2 coliphage. The results showed that PEG precipitation had the highest recovery in which the recovery efficiency at the spiked level of 106 pfu/100 ml was 16.63 %. Aqueous phase obtained from the final step of PEG method was applied for enumeration of coliphage and viral RNA extraction in naturally contaminated lettuce samples (N = 30) collected from two sources (market and farm). The samples were then analyzed based on (I, II, III, and IV primer sets) using RT-PCR method. Coliphages were detected in 9 (60 %) and 12 (80 %) out of 15 market and farm samples, respectively, using DAL assay, whereas male-specific F+RNA coliphages were detected using the RT-PCR method in 9 (60 %) and 13 (86.6 %) out of 15 samples of market and farm, respectively. Based on the results, only genotype I of male-specific F+RNA coliphages was detected in lettuce samples and no sample tested was positive for other genotypes (II, III, and IV).
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Affiliation(s)
- Mojgan Yazdi
- Department of Food Science and Technology, Faculty of Agriculture, Ferdowsi University of Mashhad, Mashhad, Iran
| | - Masoud Yavarmanesh
- Department of Food Science and Technology, Faculty of Agriculture, Ferdowsi University of Mashhad, Mashhad, Iran.
| | - Masumeh Bahreini
- Department of Biology, Faculty of Science, Ferdowsi University of Mashhad, Mashhad, Iran
| | - Mohebbat Mohebbi
- Department of Food Science and Technology, Faculty of Agriculture, Ferdowsi University of Mashhad, Mashhad, Iran
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Abstract
Inhalation exposes the upper and lower respiratory tracts of humans to a variety of airborne particles and vapors. Airborne transmission of pathogenic microorganisms to humans from the environment, animals, or other humans can result in disease. Inhalation is an important route of exposure as the lung is more susceptible to infection than the gastrointestinal tract. Ingested microorganisms must pass through the acidic environment of the stomach before they can colonize tissue while inhaled microorganisms are deposited directly on the moist surfaces of the respiratory tract. Inhalation of microbial aerosols can elicit adverse human health effects including infection, allergic reaction, inflammation, and respiratory disease. Following inhalation, infectious viruses, bacteria, and fungi can establish in host cells of the respiratory tract. Some are translocated and infect the gastrointestinal tract and other tissues. This article discusses human viral, bacterial, and fungal diseases transmitted via aerosols. Viral diseases presented are influenza, severe acute respiratory syndrome (SARS), Middle East respiratory syndrome (MERS), enteric viruses related infections, hantavirus disease, measles, and varicella. Bacterial diseases are Legionnaires’ disease, tuberculosis, and nontubercule mycobacterial disease. Exposure to some Gram-negative and Gram-positive bacteria, endotoxin, and actinomycetes when dispersed through the air can result in disease following inhalation. Fungal diseases included are histoplasmosis, coccidiomycosis, blastomycosis, cryptococcosis, and aspergillosis. The threat of bioterrorism with airborne infectious agents is also briefly presented.
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Sánchez G, Sánchez G. Food and Viral Contamination: Analytical Methods. Food Saf (Tokyo) 2016. [DOI: 10.1002/9781119160588.ch10] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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Bartsch C, Szabo K, Dinh-Thanh M, Schrader C, Trojnar E, Johne R. Comparison and optimization of detection methods for noroviruses in frozen strawberries containing different amounts of RT-PCR inhibitors. Food Microbiol 2016; 60:124-30. [PMID: 27554153 DOI: 10.1016/j.fm.2016.07.005] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2016] [Revised: 07/18/2016] [Accepted: 07/18/2016] [Indexed: 01/01/2023]
Abstract
Frozen berries have been repeatedly identified as vehicles for norovirus (NoV) transmission causing large gastroenteritis outbreaks. However, virus detection in berries is often hampered by the presence of RT-PCR-inhibiting substances. Here, several virus extraction methods for subsequent real-time RT-PCR-based NoV-RNA detection in strawberries were compared and optimized. NoV recovery rates (RRs) between 0.21 ± 0.13% and 10.29 ± 6.03% were found when five different artificially contaminated strawberry batches were analyzed by the ISO/TS15216-2 method indicating the presence of different amounts of RT-PCR inhibitors. A comparison of five different virus extraction methods using artificially contaminated strawberries containing high amounts of RT-PCR inhibitors revealed the best NoV RRs for the ISO/TS15216 method. Further improvement of NoV RRs from 2.83 ± 2.92% to 15.28 ± 9.73% was achieved by the additional use of Sephacryl(®)-based columns for RNA purification. Testing of 22 frozen strawberry samples from a batch involved in a gastroenteritis outbreak resulted in 5 vs. 13 NoV GI-positive and in 9 vs. 20 NoV GII-positive samples using the original ISO/TS15216 method vs. the extended protocol, respectively. It can be concluded that the inclusion of an additional RNA purification step can increase NoV detection by the ISO/TS15216-2 method in frozen berries containing high amounts of RT-PCR inhibitors.
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Affiliation(s)
- Christina Bartsch
- Federal Institute for Risk Assessment, Max-Dohrn-Str. 8-10, 10589 Berlin, Germany
| | - Kathrin Szabo
- Federal Institute for Risk Assessment, Max-Dohrn-Str. 8-10, 10589 Berlin, Germany
| | - Mai Dinh-Thanh
- Federal Institute for Risk Assessment, Max-Dohrn-Str. 8-10, 10589 Berlin, Germany
| | - Christina Schrader
- Federal Institute for Risk Assessment, Max-Dohrn-Str. 8-10, 10589 Berlin, Germany
| | - Eva Trojnar
- Federal Institute for Risk Assessment, Max-Dohrn-Str. 8-10, 10589 Berlin, Germany
| | - Reimar Johne
- Federal Institute for Risk Assessment, Max-Dohrn-Str. 8-10, 10589 Berlin, Germany.
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Response to the Questions Posed by the Food Safety and Inspection Service, the Centers for Disease Control and Prevention, the National Marine Fisheries Service, and the Defense Health Agency, Veterinary Services Activity Regarding Control Strategies for Reducing Foodborne Norovirus Infections. J Food Prot 2016; 79:843-89. [PMID: 27296435 DOI: 10.4315/0362-028x.jfp-15-215] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
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33
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Szabo K, Trojnar E, Anheyer-Behmenburg H, Binder A, Schotte U, Ellerbroek L, Klein G, Johne R. Detection of hepatitis E virus RNA in raw sausages and liver sausages from retail in Germany using an optimized method. Int J Food Microbiol 2015; 215:149-56. [DOI: 10.1016/j.ijfoodmicro.2015.09.013] [Citation(s) in RCA: 75] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2015] [Revised: 09/18/2015] [Accepted: 09/19/2015] [Indexed: 01/22/2023]
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Comparison of process control viruses for use in extraction and detection of human norovirus from food matrices. Food Res Int 2015. [DOI: 10.1016/j.foodres.2015.05.027] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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Perrin A, Loutreul J, Boudaud N, Bertrand I, Gantzer C. Rapid, simple and efficient method for detection of viral genomes on raspberries. J Virol Methods 2015; 224:95-101. [DOI: 10.1016/j.jviromet.2015.08.005] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2015] [Revised: 07/21/2015] [Accepted: 08/14/2015] [Indexed: 12/31/2022]
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A Membrane-Based Electro-Separation Method (MBES) for Sample Clean-Up and Norovirus Concentration. PLoS One 2015; 10:e0141484. [PMID: 26513464 PMCID: PMC4625962 DOI: 10.1371/journal.pone.0141484] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2015] [Accepted: 10/08/2015] [Indexed: 12/01/2022] Open
Abstract
Noroviruses are the leading cause of acute gastroenteritis and foodborne illnesses in the United States. Enhanced methods for detecting noroviruses in food matrices are needed as current methods are complex, labor intensive and insensitive, often resulting in inhibition of downstream molecular detection and inefficient recovery. Membrane-based electro-separation (MBES) is a technique to exchange charged particles through a size-specific dialysis membrane from one solution to another using electric current as the driving force. Norovirus has a net negative surface charge in a neutrally buffered environment, so when placed in an electric field, it moves towards the anode. It can then be separated from the cathodic compartment where the sample is placed and then collected in the anodic compartment for downstream detection. In this study, a MBES-based system was designed, developed and evaluated for concentrating and recovering murine norovirus (MNV-1) from phosphate buffer. As high as 30.8% MNV-1 migrated from the 3.5 ml sample chamber to the 1.5 ml collection chamber across a 1 μm separation membrane when 20 V was applied for 30 min using 20 mM sodium phosphate with 0.01% SDS (pH 7.5) as the electrolyte. In optimization of the method, weak applied voltage (20 V), moderate duration (30 min), and low ionic strength electrolytes with SDS addition were needed to increase virus movement efficacy. The electric field strength of the system was the key factor to enhance virus movement, which could only be improved by shortening the electrodes distance, instead of increasing system applied voltage because of virus stability. This study successfully demonstrated the norovirus mobility in an electric field and migration across a size-specific membrane barrier in sodium phosphate electrolyte. With further modification and validation in food matrixes, a novel, quick, and cost-effective sample clean-up technique might be developed to separate norovirus particles from food matrices by electric force.
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Melgaço FG, Victoria M, Corrêa AA, Ganime AC, Malta FC, Brandão MLL, de Mello Medeiros V, de Oliveira Rosas C, Bricio SML, Miagostovich MP. Virus recovering from strawberries: Evaluation of a skimmed milk organic flocculation method for assessment of microbiological contamination. Int J Food Microbiol 2015; 217:14-9. [PMID: 26476572 DOI: 10.1016/j.ijfoodmicro.2015.10.005] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2015] [Revised: 09/18/2015] [Accepted: 10/04/2015] [Indexed: 11/26/2022]
Abstract
Skimmed milk organic flocculation method was adapted, optimized and compared with polyethylene glycol (PEG) precipitation and filtration methods for recovering viruses from a strawberry matrix. Spiking experiments with norovirus genogroup II genotype 4 (NoV GII.4) and murine norovirus 1 (MNV-1) demonstrated that the organic flocculation method associated with a glycine elution buffer, filter bag and cetyltrimethylammonium bromide (CTAB) showed a recovery percentage of 2.5 and 32 times higher than PEG precipitation and filtration methodologies for NoV recovering. Furthermore, this method was used for investigating NoV and human adenoviruses (HAdVs) in 90 samples of fresh strawberries commercialized in Rio de Janeiro markets. NoV GI and GII were not detected in those samples and MNV-1, used as internal process control (IPC), was recovered in 95.5% (86) of them. HAdVs were detected in 18 (20.0%) samples and characterized by nucleotide sequencing as Human Mastadenovirus specie F and as type specie HAdV-2. Bacterial analysis did not detect Salmonella spp. and Listeria monocytogenes, however, 3.3% of fecal coliforms were detected in those samples. These results indicate the organic flocculation method as an alternative for recovering enteric viruses from strawberries, emphasizing a need for virus surveillance in food matrices.
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Affiliation(s)
- Fabiana Gil Melgaço
- Laboratory of Comparative and Environmental Virology, Oswaldo Cruz Institute, Fiocruz, Rio de Janeiro-RJ, Brazil.
| | - Matias Victoria
- Laboratory of Molecular Virology, Regional Norte, CENUR Noroeste, Universidad de la República, Salto, Uruguay.
| | | | - Ana Carolina Ganime
- Laboratory of Comparative and Environmental Virology, Oswaldo Cruz Institute, Fiocruz, Rio de Janeiro-RJ, Brazil.
| | - Fábio Correia Malta
- Laboratory of Microbiology and Parasitology, Faculty of Pharmacy, Rio de Janeiro Federal University, Macaé, RJ, Brazil.
| | - Marcelo Luiz Lima Brandão
- Food Sector, Laboratory of Food and Sanitizing, Department of Microbiology, National Institute of Quality Control in Health, Fiocruz, Rio de Janeiro-RJ, Brazil.
| | - Valéria de Mello Medeiros
- Food Sector, Laboratory of Food and Sanitizing, Department of Microbiology, National Institute of Quality Control in Health, Fiocruz, Rio de Janeiro-RJ, Brazil.
| | - Carla de Oliveira Rosas
- Food Sector, Laboratory of Food and Sanitizing, Department of Microbiology, National Institute of Quality Control in Health, Fiocruz, Rio de Janeiro-RJ, Brazil.
| | - Silvia Maria Lopes Bricio
- Food Sector, Laboratory of Food and Sanitizing, Department of Microbiology, National Institute of Quality Control in Health, Fiocruz, Rio de Janeiro-RJ, Brazil.
| | - Marize Pereira Miagostovich
- Laboratory of Comparative and Environmental Virology, Oswaldo Cruz Institute, Fiocruz, Rio de Janeiro-RJ, Brazil.
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Saito H, Toho M, Tanaka T, Noda M. Development of a Practical Method to Detect Noroviruses Contamination in Composite Meals. FOOD AND ENVIRONMENTAL VIROLOGY 2015; 7:239-248. [PMID: 25796206 DOI: 10.1007/s12560-015-9191-7] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/13/2014] [Accepted: 03/16/2015] [Indexed: 06/04/2023]
Abstract
Various methods to detect foodborne viruses including norovirus (NoV) in contaminated food have been developed. However, a practical method suitable for routine examination that can be applied for the detection of NoVs in oily, fatty, or emulsive food has not been established. In this study, we developed a new extraction and concentration method for detecting NoVs in contaminated composite meals. We spiked NoV-GI.4 or -GII.4 stool suspension into potato salad and stir-fried noodles. The food samples were suspended in homogenizing buffer and centrifuged to obtain a food emulsion. Then, anti-NoV-GI.4 or anti-NoV-GII.4 rabbit serum raised against recombinant virus-like particles or commercially available human gamma globulin and Staphylococcus aureus fixed with formalin as a source of protein A were added to the food emulsion. NoV-IgG-protein A-containing bacterial complexes were collected by centrifugation, and viral RNA was extracted. The detection limits of NoV RNA were 10-35 copies/g food for spiked NoVs in potato salad and stir-fried noodles. Human gamma globulin could also concentrate other NoV genotypes as well as other foodborne viruses, including sapovirus, hepatitis A virus, and adenovirus. This newly developed method can be used as to identify NoV contamination in composite foods and is also possibly applicable to other foodborne viruses.
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Affiliation(s)
- Hiroyuki Saito
- Akita Prefectural Research Center for Public Health and Environment, 6-6 Senshu-Kubotamachi, Akita, 010-0874, Japan,
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40
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Ha JH, Choi C, Ha SD. Evaluation of Immunomagnetic Separation Method for the Recovery of Hepatitis A Virus and GI.1 and GII.4 Norovirus Strains Seeded on Oyster and Mussel. FOOD AND ENVIRONMENTAL VIROLOGY 2014; 6:290-296. [PMID: 24952877 DOI: 10.1007/s12560-014-9156-2] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/20/2013] [Accepted: 06/04/2014] [Indexed: 06/03/2023]
Abstract
Outbreaks of viral diseases are frequently associated with the consumption of minimally processed shellfish. Among the viruses in these outbreaks, hepatitis A virus (HAV) and human norovirus (NoV) have been increasingly reported as the most common food-borne pathogens. These viruses must be concentrated in tested samples in order to be detected. In this study, a method for the detection of NoV and HAV in shellfish using an immuno-magnetic separation (IMS) procedure combined with reverse transcriptase (RT)-PCR was developed. The IMS/RT-PCR method was applied to investigate the recovery rates of HAV, NoV GI.1, and GII.4 from oyster and mussel. Based on IMS/RT-PCR results, recovery rates for HAV from oyster and mussel test samples were 2.4 and 1.1%, respectively. The NoV GI.1 recovery rates from oyster and mussel samples were 4.9-9.2% (mean 6.9%) and 4.3-8.6% (mean 6.2%), respectively, and the NoV GII.4 recovery rates were 8.8 and 8.5%, respectively. These results verified that HAV, NoV GI.1, and GII.4 can be detected in all the test samples using the IMS/RT-PCR method, although the three inoculated viruses were recovered with low efficiency. In conclusion, the IMS/RT-PCR method can be used to efficiently and rapidly detect viruses such as HAV and NoV in shellfish such as oyster and mussel.
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Affiliation(s)
- Ji-Hyoung Ha
- School of Food Science and Technology, Chung-Ang University, 4726 Seodongdaero, Ansung, Gyunggi-do, 456-756, Republic of Korea
| | - Changsun Choi
- School of Food Science and Technology, Chung-Ang University, 4726 Seodongdaero, Ansung, Gyunggi-do, 456-756, Republic of Korea
| | - Sang-Do Ha
- School of Food Science and Technology, Chung-Ang University, 4726 Seodongdaero, Ansung, Gyunggi-do, 456-756, Republic of Korea.
- Department of Food Science and Technology, Chung-Ang University, 72-1 Nae-ri, Daeduk-myun, Ansung, Gyunggi-do, 456-756, Republic of Korea.
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Batch testing for noroviruses in frozen raspberries. Int J Food Microbiol 2014; 192:43-50. [PMID: 25306298 DOI: 10.1016/j.ijfoodmicro.2014.09.024] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2014] [Revised: 09/02/2014] [Accepted: 09/06/2014] [Indexed: 01/02/2023]
Abstract
Berries, in particular raspberries, have been associated with multiple recalls due to norovirus contamination and were linked to a number of norovirus (NoV) outbreaks. In the present study a total of 130 samples of frozen raspberries were collected from 26 batches in four different raspberry processing companies. In two companies the samples consisted of bulk frozen raspberries serving as raw material for the production of raspberry puree (an intermediate food product in a business to business setting). In two other companies, the samples consisted of bulk individually quick frozen (IQF) raspberries serving as raw material for the production of frozen fruit mixes (as a final food product for consumer). Enumeration of Escherichia coli and coliforms was performed as well as real-time reverse transcription PCR (RT-qPCR) detection of GI and GII NoV (in 2 × 10 g). In addition, in cases where positive NoV GI or GII RT-qPCR signals were obtained, an attempt to sequence the amplicons was undertaken. Six out of 70 samples taken from the 14 batches of frozen raspberries serving raspberry puree production provided a NoV RT-qPCR signal confirmed by sequencing. Four of these six positive samples clustered in one batch whereas the other two positive samples clustered in another batch from the same company. All six positive samples showed NoV RT-qPCR signals above the limit of quantification of the RT-qPCR assay. These two positive batches of frozen raspberries can be classified as being of insufficient sanitary quality. The mean NoV level in 20 g of these raspberry samples was 4.3 log genomic copies NoV GI/20 g. The concern for public health is uncertain as NoV RT-qPCR detection is unable to discriminate between infectious and non-infectious virus particles. For the IQF raspberries, one batch out of 12 tested NoV positive, but only 1 out of the 5 samples analyzed in this batch showed a positive RT-qPCR GI NoV signal confirmed by sequencing. The RT-qPCR signal was below the limit of quantification of the assay used (<3.7 log genomic copies/20g). It was shown that the applied protocol for sequencing of the amplicon to confirm the specificity of the RT-qPCR signal was successful for GI NoV amplicons but often failed and provided an inconclusive result for GII NoV amplicons.
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Xu D, Wu X, Han J, Ji L, Chen L, Zhu X, Shen Y. Detection of GI and GII noroviruses in drinking water and vegetables using filtration and real-time RT-PCR. Eur Food Res Technol 2014. [DOI: 10.1007/s00217-014-2272-2] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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43
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Martin-Latil S, Hennechart-Collette C, Guillier L, Perelle S. Method for HEV detection in raw pig liver products and its implementation for naturally contaminated food. Int J Food Microbiol 2014; 176:1-8. [DOI: 10.1016/j.ijfoodmicro.2014.01.016] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2013] [Revised: 01/21/2014] [Accepted: 01/22/2014] [Indexed: 12/18/2022]
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44
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Holvoet K, De Keuckelaere A, Sampers I, Van Haute S, Stals A, Uyttendaele M. Quantitative study of cross-contamination with Escherichia coli, E. coli O157, MS2 phage and murine norovirus in a simulated fresh-cut lettuce wash process. Food Control 2014. [DOI: 10.1016/j.foodcont.2013.09.051] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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45
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Butot S, Zuber S, Baert L. Sample preparation prior to molecular amplification: complexities and opportunities. Curr Opin Virol 2014; 4:66-70. [PMID: 24441295 DOI: 10.1016/j.coviro.2013.12.004] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2013] [Revised: 12/02/2013] [Accepted: 12/12/2013] [Indexed: 02/01/2023]
Abstract
Molecular amplification using Reverse Transcription quantitative Polymerase Chain Reaction (RT-qPCR) is currently considered as the gold standard to detect enteric human pathogenic viruses such as norovirus and hepatitis A virus in food and water. However, the molecular-based detection requires an adequate sampling strategy and a sample preparation specific for viruses. Sampling for enteric human viruses in water and food should not necessarily follow bacterial sampling plans. The development of a reference detection method including sample preparation as proposed in ISO/TS 15216 represents a milestone to facilitate the evaluation of the performance and eventually validation of future virus detection methods. The potential viral infectivity linked to a positive PCR result is a remaining issue and pretreatments allowing the differentiation of infectious viruses would be useful for future risk assessments.
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Affiliation(s)
- Sophie Butot
- Food Safety and Quality Competence Pillar, Nestlé Research Centre, Vers-chez-les-Blanc, Box 44, 1000 Lausanne 26, Switzerland.
| | - Sophie Zuber
- Food Safety and Quality Competence Pillar, Nestlé Research Centre, Vers-chez-les-Blanc, Box 44, 1000 Lausanne 26, Switzerland
| | - Leen Baert
- Food Safety and Quality Competence Pillar, Nestlé Research Centre, Vers-chez-les-Blanc, Box 44, 1000 Lausanne 26, Switzerland
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46
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Abstract
The chapter begins by establishing the definition of soft fruit, then discusses microbial and chemical hazards that might be found in soft fruit. Methods developed for virus detection in soft fruit are reviewed and, finally, the factors that mainly affect virus detection are detailed as these pathogens are currently linked to outbreaks caused by soft fruit consumption.
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47
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Method validation for norovirus detection in naturally contaminated irrigation water and fresh produce. Int J Food Microbiol 2013; 167:74-9. [PMID: 23866911 DOI: 10.1016/j.ijfoodmicro.2013.06.023] [Citation(s) in RCA: 46] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2013] [Revised: 06/18/2013] [Accepted: 06/20/2013] [Indexed: 11/22/2022]
Abstract
Human enteric viruses are shed in extremely high numbers in the feces of infected individuals, becoming environmental contaminants and eventually leading to contamination of a variety of foodstuffs at the pre-harvest stage. Among these foods at risk is fresh produce and irrigation water is a major vehicle for crop contamination. In the present study, a standardized molecular method for quantitative virus assay has been evaluated in different types of fresh produce and in irrigation water for human norovirus (NoV) detection. Two different virus concentration procedures, polyethylene-glycol precipitation (PEG) and organic flocculation (OF), were employed. The procedures were initially assayed in spiked samples and later validated on naturally contaminated samples from the Nile Delta in Egypt. Overall, PEG provided significantly (p<0.05) better virus recoveries than OF for both irrigation water and salad vegetable virus analysis. NoV GI and GII recoveries in spiked irrigation water ranged from 22.0% to 43.3% and from 12.6% to 16.4% with the PEG and OF methods, respectively. In experimentally contaminated salad vegetables, virus recoveries ranged from 28.0% to 48.0% and from 14.0% to 18.8% by PEG precipitation and OF, respectively. Using PEG precipitation, NoV was found in 31.9% of naturally contaminated irrigation water samples. Both NoV GI and GII were detected in these samples with genome copy numbers of around 10(2) per liter. Virus analyses performed in naturally contaminated fresh produce that included green onion, watercress, radish, leek, and lettuce show that NoV GI was present in 20.8%-34.0% of the samples with genome copy numbers of around 10(2) per gram. When OF was employed, NoV was found in 25.0% of the irrigation water samples. Both genogroups could be found in these samples with genome copy numbers of around 10 per liter. In fresh produce, GI was present in 16.0%-25.7% of the samples with genome copy numbers per gram of around 10. Surprisingly, NoV GII was not detected in any salad vegetable despite highly satisfactory virus/nucleic acid extraction and enzyme efficiencies reported in the assays. Available reliable standardized assays for virus detection in food matrices including appropriate quality assurance and quality control measures to assess the efficiency of critical steps in virus analysis open the possibility to produce consistent and accurate exposure data to be used in QMRA (quantitative microbial risk assessment) and at the same time may enable the formulation of guidelines to ensure the virological quality of selected commodities in specific scenarios to reduce the risk of foodborne virus infections.
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de Abreu Corrêa A, Miagostovich MP. Optimization of an Adsorption-Elution Method with a Negatively Charged Membrane to Recover Norovirus from Lettuce. FOOD AND ENVIRONMENTAL VIROLOGY 2013; 5:144-149. [PMID: 23649411 DOI: 10.1007/s12560-013-9113-5] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/31/2013] [Accepted: 04/27/2013] [Indexed: 06/02/2023]
Abstract
Viral pathogens, such as norovirus (NoV), are frequently associated with foodborne gastroenteritis worldwide, and the detection of NoV in food requires appropriate methods and the use of process controls. In this study, an adsorption-elution concentration method using negatively charged membranes was optimized to recover NoV from lettuce, using murine norovirus 1 (MNV-1) as a human NoV (HuNoV) surrogate. Initially, three elution buffers were evaluated by direct elution using a Stomacher® apparatus with a filter bag and different concentrations of MNV-1 genomic copies. The eluates were filtered in a Stericup® and concentrated by a Centriprep Concentrator®, and the viral RNA was quantified by real-time PCR that was preceded by reverse transcription. The MNV-1 recovery efficiency varied based on the buffers used, ranging from 5.2 to 9.8 % for PBS pH 7.2, 0.2-18 % for glycine NaCl pH 9.5 and 10.8-33.3 % for glycine Tris-HCl pH 9.5. Further analysis of the glycine Tris-HCl pH 9.5 buffer revealed that gentle-shaking, direct elution could replace the use of a Stomacher®, with recovery rates reaching 66 and 32 % for MNV-1 and HuNoV, respectively, all of which suggested that this procedure is a quick and efficient method for recovering NoV from lettuce.
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Affiliation(s)
- Adriana de Abreu Corrêa
- Laboratory of Comparative and Environmental Virology, Oswaldo Cruz Institute, Oswaldo Cruz Foundation, Rio de Janeiro, 21040-900, Brazil,
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Development of a rapid total nucleic acid extraction method for the isolation of hepatitis A virus from fresh produce. Int J Food Microbiol 2013; 161:143-50. [DOI: 10.1016/j.ijfoodmicro.2012.12.007] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2012] [Revised: 12/12/2012] [Accepted: 12/19/2012] [Indexed: 01/09/2023]
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Girard M, Morales-Rayas R, Jean J. Comparison of RNA extraction methods for the detection of a norovirus surrogate in ready-to-eat foods. Foodborne Pathog Dis 2013; 10:47-54. [PMID: 23320423 DOI: 10.1089/fpd.2011.1105] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
Four nucleic acid extraction methods were evaluated for the purpose of quantifying a norovirus surrogate (murine norovirus [MNV-1]) concentrated from different food samples. Simple (strawberries and lettuce) and complex (sliced turkey breast, soft-shell clams, and potato salad) food matrices were inoculated with a viral suspension containing high (4×10(5) PFU) or low (4×10(3) PFU) numbers of viral particles. MNV-1 was eluted using either the Pulsifier™ or repetitive pipetting. The four methods were based on using magnetic silica (MiniMAG), non-magnetic silica (bioMérieux Basic kit), silica membrane (Qiagen kit), and phenol (TriReagent) for RNA extraction. The greatest recovery of viral RNA from simple matrices was obtained using magnetic silica for both inoculation levels. For strawberries, the addition of pectinase during the elution step improved RNA recovery when the Pulsifier was used with silica membrane extraction and when repetitive pipetting was used with magnetic silica extraction. In the case of complex matrices, the extraction of high or low numbers of MNV-1 was highest overall using magnetic silica. The exception was soft-shell clams with a high viral load, in which the greatest recovery was obtained with the phenol-based method. In general, magnetic silica was the most effective for extracting both high and low numbers of MNV-1 particles from a wide range of foods.
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Affiliation(s)
- Maryline Girard
- Institute of Nutraceuticals and Functional Foods (INAF), Université Laval, Québec, Canada
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