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Listeria monocytogenes in Chicken Meat

Greika Ferreira Moura, Cleise de Oliveira Sigarini, Eduardo Eustáquio de Souza Figueiredo*

Federal University of Mato Grosso, Graduate Program in Animal Science, Faculty of Agronomy, Veterinary Medicine, and Animal Science, Cuiabá-MT, Brazil

Abstract: Listeria monocytogenes is the causative agent of listeriosis, an infection that gives rise to bacteremia and meningitis that can be propagated to humans via food contamination. The chicken-meat and derivatives processing industries are common sites of this pathogen, and the great challenge is in controlling this hazard to avoid economic and public health losses. A literature review on L. monocytogenes and implications to the chicken supply chain, poultry slaughterhouses, and public health was conducted. The review was compiled with the main papers published around the world in the last 15 years containing the key words Listeria monocytogenes, poultry, meat, chicken, broilers, and listeriosis, using the main publishers of online journals. The collected information was discussed and it was concluded that poultry can be asymptomatic carriers of L. monocytogenes and introduce contamination in slaughterhouses, which can become a persistent problem in poultry slaughterhouses due to its capacity to form biofilms on many different materials, causing cross-contamination in chicken meat and its derivatives. Carcasses, cuts, or giblets of chilled or frozen chicken in natura are sources of contamination by L. monocytogenes and can transmit listeriosis to humans.

Keywords: poultry, aviculture, listeriosis, slaughterhouses, biofilms

Citation: Greika Ferreira Moura, Cleise de Oliveira Sigarini, Eduardo Eustáquio de Souza Figueiredo, Listeria monocytogenes in Chicken Meat. Journal of Food and Nutrition Research, 4 (7). 436-441. January 2016. doi:10.12691/jfnr-4-7-4

1. Introduction

Listeria monocytogenes is the causative agent of listeriosis, a foodborne disease that can lead to bacteremia and meningitis. Manifestation of symptoms can occur after ingestion of foods contaminated by 100 to 1000 cells [1], affecting mainly elderly people, newborns, pregnant women, and immunocompromised individuals [2].

According to the Centers for Disease Control and Prevention [3], approximately 48 million people fall ill every year after consuming contaminated food, generating an index of 128,000 hospitalizations and 3,000 deaths per year. Of this total, 1,600 are listeriosis cases, with a rate of 260 deaths.

Contaminated foods are the major source of transmission of this microorganism, whose presence has been reported in different foods such as raw and/or pasteurized milk, cheeses, chicken meat, fish, and processed meat products [4].

In the food industries, this microorganism can multiply within food grade lubricants, machinery, treadmills, countertops, utensils, floors, drains, sewers, rubbers, welds, wall cracks, lining, air filters, metal structures, employees’ clothes, hoses, tools, sponges, brushes, or other sites where disinfection is not effective; additionally, it can grow at chilling temperature and form biofilms on the most diverse materials [5,6,7], which makes its elimination a difficult task in this industry, ultimately causing cross-contamination.

The chicken-meat and derivatives processing industries are common sites for this pathogen. The great challenge of poultry-processing companies is to control this hazard to avoid economic and public-health losses stemming from product recalls [8] or condemnation by the veterinary inspection service.

In the present study, a literature review was conducted on L. monocytogenes and the implications to the commercial poultry supply chain, poultry slaughterhouses, and public health. The review includes the main papers published worldwide in the last 15 years containing the key-words Listeria monocytogenes, poultry, meat, chicken, broilers, and listeriosis using the main publishers of online journals. The data were presented, interpretedand discussed, and conclusions were drawn on the subject.

2. Listeria monocytogenes and Pathogenicity

The genus Listeria comprises fifteen species and six subspecies; noteworthy examples are Listeria welshimeri, L. seeligeri, L. monocytogenes, L. innocua, L. grayi, and L. ivanovii [9,10,11,12].

L. monocytogenes was first described in 1924 by Murray, Webb, and Swam, who isolated a microorganism responsible for causing a clinical case of mononuclear leukocytosis in rabbits and named it Bacterium monocytogenes [13]. In 1927, Pirie isolated a similar organism from rodent livers, later naming it Listerella hepatolytica. The term L. monocytogenes was only coined in 1940 [14].

L. monocytogenes is a gram-positive, halotolerant, facultative anaerobic, non-spore forming, non-H₂S producing bacterium of bacillus morphology with a great ability to adapt to and survive in adverse environmental conditions, developing at temperatures ranging from 3 to 50°C, withstanding pH variations (between 4.3 and 9.4) and a water activity of 0.92 [15,16]. The biochemical classification of the Listeria species is catalase-positive, oxidase-negative, glucose-fermentative, which produces lactic acid and does not reduce nitrate to nitrite [17]. For differentiation between species, carbohydrate-fermentation tests are applied, e.g. dextrose, rhamnose, mannitol, and xylose. Beta-hemolysis production in blood agar is also a widely adopted differentiation proof protocol [18] (Table 1).

After enduring the physiological barriers of digestion, in the intestine, the bacterium reaches the bloodstream of the host and has a typical facultative intracellular action, capable of proliferating in macrophages and in a wide variety of normally non-phagocytic cells, such as epithelial and endothelial cells, as well as in hepatocytes. In all these cell types, L. monocytogenes develops a characteristic life cycle, with the following stages: (I) early escape from the phagocytic vacuole (II), multiplication in the cytoplasm of the host cell, (III) motility by polymerization of the actin tail, (IV) pseudopod protrusion for bacterial movement, and (V) phagocytosis of the pseudopod and start of a new cycle [21].

Table 1. Biochemical characteristics of species of the genus Listeria

The invasion occurs by the binding of two proteins located on the surface of the microorganism to receptors located on the surface of the host cell. These proteins are called Internalin A and Internalin B. The former has E-cadherin, a glycoprotein, as its host cell receptor, whereas Internalin B has Met, a protein of the tyrosine kinase family, as the cell receptor [22,23]. The bacterium is then phagocytosed by the macrophages and shielded from damage within this cell due to the production of catalase and superoxide dismutase enzymes, which will protect it from the oxidative effects of the phagocyte [24]. To escape the phagocyte, L. monocytogenes performs lysis of the membrane through the action of listeriolysin O (LLO), a β-hemolysin that forms pores on the phagocytic membrane, allowing the phospholipases to degrade the phospholipids of the membrane [25].

After escaping the phagosome, the bacteria are surrounded by actin monomers, which rearrange themselves and reach one of the poles of the microorganism. This action is coordinated by a surface protein named ActA, that enables the association of the actin filaments in the cytoplasm of the host cell, thereby polymerizing the tail and allowing for intra- and intercellular bacterial movement [26,27]. When this tail reaches the cell membrane, it is then pushed to the outside and penetrates the adjacent cell, forming a double-layered vacuole. After about 5 min, the bacterium escapes into the intracellular space, beginning a new invasion cycle [28,29].

3. Listeria monocytogenes and Poultry Health

Listeriosis in birds was first reported in 1935, three years after its isolation from sick chickens [30]. The infection affects wild and domesticated birds such as ducks, geese, pheasants, canaries, and cockatiels, which can be asymptomatic carriers of the agent and participate in the propagation of the pathogen in the environment [31,32]. Dissemination occurs through infected birds, by nasal and fecal secretions; however, total elimination of this pathogen does not occur in the eggs [31].

Although many poultry species are affected, the clinical disease is rare, and occasionally described [33]. Studies in Nairobi, Kenya, using samples from swabs of the cloaca and oropharynx, demonstrated the presence of 22.2% of positive poultry for L. monocytogenes [34], similar results were also found in Brazil, where 2.9 % of cloacal swabs samples were positive for this organism [32]. It is important to note that in both studies, surveyed poultry presented no clinical symptoms of listeriosis, these results further support the hypothesis that poultry’s can be asymptomatic carriers of that pathogen and thus contribute to contamination of the production environment and processing [34].

Young birds are usually more susceptible and likely to develop listeriosis, which may assume the forms of either septicemic listeriosis or encephalitis [31]. However, listeriosis in chickens in the septicemic form occurs sporadically, presenting acute or chronic evolution. Because L. monocytogenes is an opportunist pathogen, the disease may appear secondarily to parasitosis [35].

Chronic infection may induce injuries in the heart, liver, and, rarely, in the brain, if it affects the central nervous system. Symptoms may include torticollis, blindness, tremors, stupor, and paresis [36]. In post-mortem examinations, birds affected with by the septicemic form showed degeneration and necrosis of the myocardium and liver, as well as a case of serofibrinous pericarditis [31,36].

In its encephalic form, histopathological examinations indicate brain injuries such as the formation of microabscesses and extensive thrombosis, associated with areas of necrosis. When injured tissues are subjected to Gram staining, typical gram-positive bacteria can be observed. Immunohistochemistry, PCR, or isolation and biochemical identification of the microorganisms can be performed to confirm the diagnosis. Differential diagnoses may include diseases accompanying neurological and septicemic cases, such as colibacillosis, pasteurellosis, Marek's disease, and Newcastle disease [31].

4. Listeria monocytogenes, Aviculture, and Chicken Meat Processing

The poultry industry is consolidated as one of the most important sources of animal protein for the world’s population. Data from the United States Department of Agriculture [37] corroborate this assertion, describing that, in 2014, the total production corresponded to 2.9 billion Euros. Meat production worldwide should increase by 1.6%. A projection for the year 2020 indicates that pork will no longer be the most widely produced meat in the world, and the population will thus likely be supplied by chicken meat, which has shown a significant evolution over the years. In this same period, there will also be an increment of 2.4 kg in meat consumption per habitant, which will consist mostly of chicken (around 72%) [38].

To meet the growing demand for chicken meat, food industries must ensure quality through their processes. In this regard, the concern regarding L. monocytogenes is present in industrial environments, since these places provide favorable conditions, like temperature and humidity, to its growth, especially on floors, drains, countertops, utensils, and equipment [5,39], and so the bacterium can remain for months, or even years in the industrial environment, leading to recurrent contamination of foods [40].

The persistence of the bacterium in the industry is a result of the ability of L. monocytogenes to form biofilms on many different materials in response to adverse situations [7,41], making its elimination in the slaughterhouse a difficult task, with the consequent possibility of food cross-contamination. Biofilm formation as an important survival strategy of the bacterium against the action of detergents, disinfectants, and antimicrobials; however, biofilm formation in industrial food environments, just like its preventive measures, depends on the strain, the location where it was isolated, the levels of nutrients present in the medium, the temperature of the environment, and the hydrophobicity of adhesion surfaces and cells [42].

Cross-contamination may take place during all stages of chicken meat processing [32,43], mainly during the pre-chilling of carcasses, when water and ice become important contamination carriers, in addition to being an environment that allows the multiplication of psychrotrophic microorganisms if no strict control is carried out [44].

Although L. monocytogenes can be present in meat packing plants and companies endeavor to reduce this hazard, the search for the bacterium is not mandatorily required in in natura chilled or frozen chicken meat in several countries, with this procedure being applied only for ready-to-consume chicken products. This is probably hampering the generation of data about the prevalence of the bacterium in in natura meats, as well as the association between listeriosis cases in humans and chicken consumption, since there has been only one reported case of listeriosis attributed to the consumption of chilled chicken meat in a supermarket in the United Kingdom, involving a pregnant woman [45].

The occurrence of L. monocytogenes in chicken and poultry has been reported in the Spain [47], Brazil [32,48], Italy [49], Jordan [50], Iran [51], Malaysia [52], and Chile [43]. In these studies, the occurrence of this bacterium in chicken products in natura ranged from 2,9 to 38% of the evaluated samples (Table 2).

Table 2. Reported of L. monocytogenes in chicken and poultry

The frequency of L. monocytogenes has been estimated in slaughterhouses in France [53], Finland, Iceland, Norway, and Sweden [54], and Brazil [44,48] with frequency ranging between 11.7 and 38.9% of the monitored slaughterhouses.

The occurrence of L. monocytogenes in different food matrices was also studied in Chile between the years 2008 and 2012. On the occasion, L. monocytogenes was isolated from 10% of a total of 2647 samples, with greatest occurrence in beef (23%) and poultry (19%) [43]. This significant presence of L. monocytogenes in raw chicken meat and derivatives evidences the possibility of cross-contaminations during the preparation of ready-to-eat foods.

5. Diagnostic Methods

The detection of L. monocytogenes in food becomes difficult due to the presence of competitive microflora, interferences by food inhibitor compounds and low levels counts of this pathogen [55]. In an attempt to solve this, new advances have been made in recent years, such as the development of selective culture media, and the development of new serological and molecular methods [20].

The main regulatory agencies require that isolation methods must be able to detect Listeria spp. in 25g of food. Therefore, the use of antimicrobial agents are necessary in order to inhibit microbiota growth, such as other Gram-positive and Gram-negative bacteria and fungi [56]. According to the nature of the sample, a certain method may be more appropriate than others. From the available methods, the most used are the ISO (International Organization for Standardization) 11290 method, from the Bacterial Analytical Manual (BAM), recommended by the Food and Drug Administration (FDA) for Listeria spp. isolation from dairy products, seafood and vegetables, and the United States Department of Agriculture (USDA / FSIS) method proposed for meat, poultry, egg and environmental samples. These methods are based on an enrichment step, followed by selective plating and identification/differentiation of the isolated microorganism. Differentiation of Listeria species is carried out by means of biochemical and phenotypic characteristics observed in sugar fermentation and hemolysis production tests [57].

Another alternative for the diagnosis of L. monocytogenes are immunological assays. These tests are based on specific Listeria spp. Antibodies, obtained as commercial kits. However, few are specific for the identification of L. monocytogenes [56]. The immunoassay enzyme (Enzyme-linked immunosorbent assay - ELISA) is an antigen-antibody reaction widely used for the detection of foodborne pathogens. This method produces rapid results (30-50 hours) and is applicable for use in more complex food matrices [58]. These tests target the specific identification of L. monocytogenes using monoclonal antibodies, which recognize the p60 protein, an active protein in cell invasion [59]. The disadvantage of this method is its low sensitivity, of approximately 10⁵ - 10⁶ CFU/mL. In order to meet this disadvantage, PCR (Polymerase chain reaction by the action of polymerase) has been widely used, as it is a sensitive and specific method, able to detect up to one cell of this microorganism [60]. In recent years a large number of tests based on this technique have been described for the detection of L. monocytogenes in foods [61,62,63]. Developed reactions seek to identify pathogens that target virulence factors, and the most used are hly, iap, inlAB and the p60 protein [64,65].

6. Preventive Measures

Efficient prevention against Listeria monocytogenes in foods should focus on the risks of the production chain in a holistic manner, from production to the end consumer [66]. To this end, it is paramount to obtain knowledge regarding the dispersion of this pathogen in food-processing plants and in residences of a given country so action strategies can be developed, given that the use of data from other regions may lead to the elaboration of ineffective control plants. The combination of assorted measures can minimize the entry of L. monocytogenes in an industrial environment, e.g. effective self-control plans, sterilization of packaging material, and effective sanitation of the environment [67].

The best way to avoid contamination would be to prevent biofilm formation in food industries by frequently disinfecting and cleaning surfaces [42]. This procedure would be sufficient to remove cells not yet strongly adhered, although it may fail and not remove mature biofilms. To fulfill this purpose, the use of appropriate disinfectants is essential, and other strategies have been tested with this aim. Some examples are the use of ozone or acidic water, usually considered eco-friendly biocides, as they do not leave chemical residuals [68]. Besides these products, natural compounds extracted from bacteria or aromatic plants cultures and some GRAS (generally recognized as safe) ingredients have also been evaluated to eradicate biofilms [69,70].

As a means to prevent foodborne listeriosis, good food-manufacturing practices must be adopted, so as to avoid cross-contamination to ready-made foods when contact with chicken meat, cuts, or giblets is involved.

7. Conclusions

Poultry may be asymptomatic carriers of L. monocytogenes and introduce contamination in slaughterhouses.

L. monocytogenes can become a persistent problem in poultry slaughterhouses due to its ability to form biofilms on several different materials, causing cross-contamination to chicken meat and its derivatives.

Chilled or frozen chicken carcasses, cuts, or giblets are sources of contamination of L. monocytogenes and can transmit listeriosis to humans.

Acknowledgments

The authors would like to thank Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES Brazil); Conselho Nacional de Apoio a Pesquisa (CNPq, Brazil) for financial support, and Fundação de Amparo a Pesquisa de Mato Grosso (FAPEMAT, Brazil) for a Master’s fellowship grant.

Author Contributions

All authors actively participated in all construction stages of this manuscript.

Conflict of Interest Statement

None of the authors of this paper has a financial or personal relationship with other people or organisations that could inappropriately influence or bias the content of the paper.

References

[1]   | Mackiw, E., Modzelewska, M., Maka, L., Sciezynska, H., Pawlowska, K., Postupolski, J. and Korsak, D. “Antimicrobial resitance profiles of Listeria monocytogenes isolated from ready to eat product in Poland in 2007-2011.” Food Control, 59, 7-11. January 2016.

[2]  
Gianfranceschi, M.V, Rodriguez-Lazaro, D., Hernandez, M., González-García, P., Comin, D.,Gattuso ,A., Delibato, E., Sonnessa, M., Pasquali, F., Prencipe, V., Sreter-Lancz, Z., Saiz-Abajo, M.J., Pérez-De-Juan, J., Butrón, J., Kozačinski, L., Tomic, D.H., Zdolec, N., Johannessen, G.S., Jakočiūnė, D., Olsen, J.E., De Santis, P., Lovari, S., Bertasi, B., Pavoni, E., Paiusco, A., De Cesare, A., Manfreda, G. and De Medici, D. “European validation of a real-time PCR-based method for detection of Listeria monocytogenes in soft cheese.” Int J Food Microbiol., 184,128-133. Aug 2014.

[3]   | Centers of Disease Control. “Listeria (Listeriosis).” 2015. [Online]. Available: http://www.cdc.gov/listeria/statistics.html#two. [Accessed Nov 26, 2015].
[4]   | Liu, P., Mizue, H., Fujihara, K., Kobayashi, H., Kamikado, H., Tanaka, T., Honjoh K. and Myamoto, T. “A new rapid real-time PCR method for detection of Listeria monocytogenes targeting the hlyA gene.” Food Sci Technol Res, 18(1), 47-57. 2012.
[5]   | BRASIL. Ministério da Agricultura, Pecuária e Abastecimento. Circular n. 352/2004/DCI/DIPOA. Departamento de Inspeção de Produtos de Origem Animal. Brasília – DF, 2004.
[6]   | Tresse, O., Shannom, K., Pinon, A., Malle, P., Vialette, M. and Midelet-Bourdin, G. “Variable adhesion of Listeria monocytogenes isolates from food processing facilities and clinical cases to inert surfaces.” J Food Prot., 70(7), 1569-1578. Jul 2007.
[7]   | Renier, S., Hébraud, M. and Desvaux, M. “Molecular biology of surface colonization by Listeria monocytogenes: an additional facet of an opportunistic Gram-positive foodborne pathogen.” Environ Microbiol.,13(4), 835-850. Apr 2011.
[8]   | Food safety authority of Ireland. “The control and management of Listeria monocytogenes contamination of food.” 2005. [Online] Available: https://www.fsai.ie/workarea/downloadasset.aspx?id=1234 [Accessed September 15, 2015].
[9]   | Leclercq, A., Clermont, D., Bizet, C., Grimont, P.A., Le Flèche-Matéos, A., Roche, S.M., Buchrieser, C., Cadet-Daniel, V., Le Monnier, A., Lecuit, M. and Allerberger, F. “Listeria rocourtiae sp. nov.” Int J Syst Evol Microbiol., 60 (Pt 9), 2210-2214. Sep 2010.
[10]   | Bertsch, D., Rau, J., Eugster, M.R., Haug, M.C., Lawson, P.A., Lacroix, C. and Meile L. “Listeria fleischmannii sp. nov., isolated from cheese.” Int J Syst Evol Micr, 63(Pt 2),, 526–532. Feb 2013.
[11]   | Lang Halter, E., Neuhaus, K. and Scherer, S. “Listeria weihenstephanensis sp. nov., isolated from the water plant Lemna trisulca taken from a freshwater pond.” Int J Syst Evol Microbiol., 63 (Pt 2), 641-647. Feb 2013.

[12]  
den Bakker, H.C., Warchocki, S., Wright, E.M., Allred, A.F., Ahlstrom, C., Manuel, C.S., Stasiewicz, M.J., Burrell, A., Roof, S., Strawn, L.K., Fortes, E., Nightingale, K.K., Kephart, D. and Wiedmann, M. “Listeria floridensis sp. nov., Listeria aquatica sp. nov., Listeria cornellensis sp. nov., Listeria riparia sp. nov. and Listeria grandensis sp. nov., from agricultural and natural environments.” Int J Syst Evol Microbiol., 64 (Pt 6): 1882-1889. Jun 2014.

[13]   | Rocourt, J. and Buchrieser, C. The Genus Listeria and Listeria monocytogenes: Phylogenetic Position, taxonomy, and Identification. In: Ryser ET, Marth EH. Listeria, Listeriosis e Food safety. CRC Press, Nova Yorque, 2007, 1-12.
[14]   | Breed R.S., Murray, E.G.D. and Hitchens, A.P. Bergey’s manual of determinative bacteriology. Baltimore: The William and Wilkins Co. 60p. 1948.
[15]   | Liu, D. “Identification, subtyping and virulence determination of Listeria monocytogenes, an important foodborne pathogen.” J Med Microbiol., 55 (Pt 6) , 645-659. Jun 2006.
[16]   | Cruz, C.D., Martinez, M.B. and Destro, M.T. “Listeria monocytogenes: um agente pouco conhecido no Brasil.” Alim. Nutr., 19(2), 195-206. apr./jun. 2008.
[17]   | Schmid, M.W., Ng, E.Y., Lampidis, R., Emmerth, M., Walcher, M., Kreft, J., Goebel, W., Wagner, M. and Schleifer, K.H. “Evolutionary history of the genus Listeria and its virulence genes.” Syst Appl Microbiol., 28(1), 1-18. Jan 2005.
[18]   | Farber, J.M. and Peterkin, P.I. “Listeria monocytogenes: a foodborne pathogen.” Microbiol Rev., 55, 476-511. 1991.

[19]  
Pagotto, F., Daley, E., Farber, J. and Warburton, D. Isolation of Listeria monocytogenes from all food environmental samples. In: Canada. Health Products Food Branch. Compendium of analytical methods: laboratory procedures of microbiological analytical of foods MFHPB-30, 2006. [E-book] Available: http://www.hc-sc.gc.ca/fn-an/res-rech/analy-meth/microbio/volume3-eng.php.

[20]   | Gasanov, U., Hughes, D. and Hansbro, P. M. “Methods for the isolation and identification of Listeria spp. and Listeria monocytogenes: a review.” FEMS Microbiology Reviews, 29,851-875, December 2005.
[21]   | Vázquez-Boland, J.A., Domínguez-Bernal, G., González-Zorn, B., Kreft, J. and Goebel. “Pathogenicity islands and virulence evolution in Listeria.” Microbes Infect., 3(7), 571-584. Jun 2001.
[22]   | Beverly, R.L. “The control, survival and growth of Listeria monocytogenes on food products.” Tese (Doctor of Philosophy)-Agricultural and Mechanical College. 2004.
[23]   | Cossart, P. and Toledo-Arana, A. “Listeria monocytogenes, a unique model in infection biology: na overview.” Microbes Infect., 10(9), 1041-1050.Jul 2008.
[24]   | Forsythe, S.J. Microbiologia de a segurança alimentar, Artmed, Porto Alegre, 2005, 242p.
[25]   | Trabulsi, L.R. and Alterthun, F. Listeria monocytogenes. In: Microbiologia. Atheneu, Rio de Janeiro, 2008, 237-245.
[26]   | Lasa, I., Dehoux, P. and Cossart, P. “Actin polymerization and bacterial movement.” Biochim. Biophys. Acta, 1402 (3), 217-228. Apr 1998.
[27]   | Lambrechts, A., Gevaert, K. and Vandekerckhoue, J. “Listeria comet tails: The actin-based motility marchinery at work.” Trends Cell Biol., 18(5), 21-28.May 2008.
[28]   | Robbins, J.R. Barth, A.I., Marquis, H., Hostos, E.L., Nelson, W.J. and Theriot, J.Á. “Listeria monocytogenes exploits normal host cell processes to spread from cell to cell.” J. Cell. Biol., 146(6), 1333-1350.Sep 1999.
[29]   | Decatur, A.L. and Portnoy, D.A. “A PEST-like sequence in listeriolysin O essential for Listeria monocytogenes pathogenicity.” Science., 290(5493), 992-999.Nov 2000.
[30]   | Wesley, I.V. Listeriosis in Animals. In: Ryser ET, Marth EH. Listeria, Listeriosis e Food safety. CRC Press, Nova Yorque, 2007, 55-73.
[31]   | Abdul-Aziz, T. “Overview of Listeriosis in Poultry.” In: Merck Manual. 2013. [Online]. Available: http://www.merckmanuals.com/vet/poultry/listeriosis/overview_of_listeriosis_in_poultry.html [Accessed Jan 22, 2015].

[32]  
Nalerio, E.S., Araújo, M.R., Mendonça, K.S., Bassani, M.T and Silva, W.P. Listeria monocytogenes: monitoramento desse perigo biológico na cadeia produtiva de frangos do sul do Rio Grande do Sul. “Listeria monocytogenes: monitoring of this biological hazard in the production chain of the southern Rio Grande do Sul chickens” Ciênc. Tecnol. Aliment., 29(3), 626-630. jul.set. 2009.

[33]   | Dhama, K., Verma, A.K., Rajagunalam, S., Kumar, A., Tiwari, R., Chakraborty, S. and Kumar, R. “Listeria monocytogenes infection in poultry and its public health importance with special reference to foodborne zoonoses”. Pakistan Journal of Biological Science, 16, 301-308, 2013.
[34]   | Njagi, L.W., Mbuthia, P.G., Bebora, L.C., Nyaga, P.N., Minga, V. and Olsen, J.E. “Carrier status for Listeria monocytogenes and other Listeria species in free range farm and market healthy indigenous chickens and ducks” East African Medical Journal, 81, 529-533. October 2004.
[35]   | Lehnert, C.H. Doenças infecciosas em animais domésticos. Rocca, São Paulo, 1988.
[36]   | Jones, T.C., Hunt, R.D. and King, N.W. Moléstias causadas por bactérias. In: Patologia Veterinária, Manole, São Paulo, 2002, 471-473.
[37]   | Departamento de Agricultura dos Estados Unidos – USDA. “Poultry - Production and Value.” 2014. [Online]. Available: http//:http://www.usda.gov/nass/PUBS/TODAYRPT/plva0415.pdf [Accessed March 22, 2015].
[38]   | Food and Agriculture Organization of the United Nations. “OECD-FAO Agricultural Outlook.” 2014. [Online]. Available: http://www.oecd-ilibrary.org/agriculture-and-food/oecd-fao-agricultural-outlook-2014/meat_agr_outlook-2014-10-en [Accessed February 15, 2015].
[39]   | Carpentier, B. and Cerf, O. “Review — Persistence of Listeria monocytogenes in food industry equipment and premises.” Int J Food Microbiol., 145(1), 1-8. Jan 2011.
[40]   | Markkula, A., Autio, T., Lundén, J. and Korkeala, H. “Raw and processed fish show identical Listeria monocytogenes genotypes with pulsed-field gel eletrophoresis.” J Food Prot,. 68(6), 1228-1231. Jun 2005.
[41]   | Tresse, O., Shannom, K., Pinon, A., Malle, P., Vialette, M. and Midelet-Bourdin, G. “Variable adhesion of Listeria monocytogenes isolates from food processing facilities and clinical cases to inert surfaces.” J Food Prot., 70(7), 1569-1578. Jul 2007.
[42]   | Casarin, L.S. and Tondo, E.C. Adhesion and Biofilm Formation of Listeria monocytogenes on Food Contact Surfaces: General Aspects and Control Measurces In: Listeria monocytogenes: Incidence, Growth Behavior and Control, Nova Science Publishers: Nova Iorque. 2015.
[43]   | Saludes, M., Troncoso, M. and Figueroa, G. “Presence of Listeria monocytogenes in Chilean food matrices.” Food Control, 50, 331-335. 2015.
[44]   | Chiarini, E., Tyler, K., Farber, J.M., Pagotto, F. and Destro, M.T. “Listeria monocytogenes in two different poultry facilities: Manual and automatic evisceration.” Poult Sci, 88,791–797. 2009.
[45]   | Centers of Disease Control. “Epidemiologic Notes and Reports Listeriosis Associated with Consumption of Turkey Franks.” MMWR, 38 (15), 267-268. 1989.
[46]   | Miettinen, M.L., Siitonem, A., Heiskanem, P., Hajanem, H., Bjorkroth, K. and Korkeala, H.J. “Molecular epidemiology of na outbreak of febrile gastroenteritis caused by Listeria monocytogenes in cold-smoked rainbow trout.” J Clin Microbiol,. 37(7), 2358-2360. Jul 1999.
[47]   | Capita, R., Alonso Calleja, C., Moreno, B. and Garcia Fernandez, M.C. “Ocurrence of Listeria species in retail poultry meat and comparison of a cultural/immunoassay for their detection.” Int J Food Microbiol., 65(1-2), 75-82. Apr 2001.
[48]   | Barbalho, T.C.F., Almeida, P.F., Almeida, R.C.C. and Hofer, E. “Prevalence of Listeria spp at a poultry processing plant in Brazil and a phage test for a rapid test confirmation of suspect colonies.” Food control, 16 (3), 211-216. March 2005.
[49]   | Pesavento, G., Ducci, B., Nieri, D., Comodo, N. and Lo Nostro, A. “Prevalence and antibiotic susceptibility of Listeria spp. isolated frow raw meat and retail foods.” Food Control 21, 708-713. 2010.
[50]   | Osaili, T.M., Alaboudi, A.R. and Nesiar, E.A. “Prevalence of Listeria spp. and antibiotic susceptibility of Listeria monocytogenes isolated from raw chicken and ready-to-eat chicken products in Jordan.” Food Control, 22 (3-4), 586-59. March–April 2011.
[51]   | Hosseinzadeh, S., Shekarforoush, S.S., Ansari-Lari, M., Jahromi, M.E., Berizi, E. and Abdollahi, M. “Prevalence and Risk Factors for Listeria monocytogenes in Broiler Flocks in Shiraz, Southern Iran.” Foodborne Pathog Dis, 9(6), 568-572. Jun 2012.
[52]   | Kuan, C.H., Goh, S.G., Loo, Y.Y., Chang, W.S., Lye, Y.L., Puspanadan, S., Tang, J.Y.H., Nakaguchi, Y., Nishibuchi, M., Mahyudin, N.A. and Radu, S. “Prevalence and quantification of Listeria monocytogenes in chicken offal at the retail level in Malaysia.” Poult Sci, 92(6), 1664-1669.Jun 2013.
[53]   | Chasseignaux, E., Gérault, P., Toquin, M.T., Salvat, G., Colin P. and Ermel, G. “Ecology of Listeria monocytogenes in the environment of raw poultry meat and raw pork meat processing plants.” FEMS Microbiol Lett., 210(2), 271-275.May 2002.
[54]   | Gudbjörnsdóttir, B., Suihko, M.L., Gustavsson, P., Thorkelsson, G., Salo, S., Sjöberg, A.M., Niclasen, O. and Bredholt, S. “The incidence of Listeria monocytogenes in meat, poultry and seafood plants in the Nordic countries.” Food Microbiol., 21(2), 217-225. April 2004.
[55]   | Norton, D.M. “Polymerase chain reaction-based methods for detection of Listeria monocytogenes: toward real-time screening for food and environmental samples.” J AOAC Int, 85(2) 505-515 Mar-Apr. 2002.

[56]  
Jantzen, M.M. “Listeria monocytogenes: detecção de células injuriadas por altas pressões e efeito de pré-enriquecimentos na PCR em tempo real.” 2006. Tese (Doutorado em Ciências-Microbiologia de Alimentos) – Universidade Federal de Pelotas – Programa de Pós Graduação em Ciência e Tecnologia Agroindustrial, Pelotas.

[57]   | Silva, N., Silveira, N.F.A., Junqueira, V.C.A., Taniwaki, M.H., Dos Santos, R.F.S. and Gomes, R.A.R. Listeria monocytogenes. In: Manual de métodos de análises microbiológicas de alimentos e água. Varela, Santa Maria, 2010, 261-284.
[58]   | Bell, K. and Kyriakides, A. Listeria: Una aproximación práctica al microortanismo y su control en los alimentos. Acribia: Zaragoza,1998, 173.
[59]   | Ky, Y.U., Noh, Y., Park, H.J., Lee, N., Youn, M., Jung B.Y. and Youn, B.S. “Use of monoclonal antibodies that recognize p60 for identification of Listeria monocytogenes.” Clin Diagn Lab Immunol , 11 (3), 446-4451. May 2004.
[60]   | Brehm-Stecher, B.F. and Johnson, E.A. Rapid Methods for Detection of Listeria. In: RYSER, E. T.; MARTH, E.H. Listeria, Listeriosis e Food safety. CRC Press, Nova Yorque, 2007, 257-275.
[61]   | Rossmanith, P., M. Krassnig, M. Wagner, and I. Hein. “Detection of Listeria monocytogenes in food using a combined enrichment/real-time PCR method targeting the prfA gene.” Res. Microbiol., 157(18), 763-771. Oct 2006.
[62]   | Rantsiou, K. et al. “Detection, quantification and vitally Listeria monocytogenes in food as determined by quantitative PCR.” International Journal of Food Microbiology, 121(1), 99-105, Jan 2008.
[63]   | Traunšek, U., Toplak, N., Jeršek, B., Lapanje, A,. Majstorović, T. and Kovač, M. “Novel cost-efficient real time PCR assays for detection and quantitation of Listeria monocytogenes.” Journal of Microbiology Methods 85 (1), 40-46. Apr 2011.
[64]   | Volokhov, D.V., Duperrier, S., Neverov, A.A., George, J., Buchrieser, C. and Hitchins, A.D. “The presence of the internalin gene in natural atypically hemolytic Listeria innocua strains suggest descent from Listeria monocytogenes.” Applied and Environmental Microbiology, 73 (3), 1928-1939. Mar 2007.
[65]   | den Bakker, H.C., Bundrant, B.N., Fortes, E.D., Orsi, R.H. and Wiedmann, M. “A population genetics-based an phylogenetic approach to understanding the evolution of virulence in the genus Listeria.” Applied and Environmental Microbiology, 76 (18), 6082-6100. Sep 2010.
[66]   | Destro, M.T. “Listeria monocytogenes na cadeia produtiva de alimentos: da produção primária ao consumidor final.” 2006. Tese (Livre Docência- Alimentos e Nutrição Experimental) – Universidade de São Paulo – Faculdade de Ciências Farmacêuticas, São Paulo.
[67]   | ILSI. “Achieving continuous improvement in reduction in foodborne listeriosis – A risk based approach.” J Food Protect, 68, 1932-1994. 2005.
[68]   | Ashraf, M.A., Ullah, S., Ahmad, L., Qureshi, A.K., Balkhair, K.S. and Abdur Rehamn, M.”Green biociddes, a promising technology: current and future applications to industry and industrial processes.” J. Sci. Food Agric., 94(3), 348-403. Feb 2014.
[69]   | Neyret, C., Herry, J.M., Meylheuc, T. and Dubois Brissonnet, F. “Plant derived compounds as natural antimicrobials to control paper mill biofilms.” J Ind Microbiol Biotechnol, 41(1), 87-96. Jan 2014.
[70]   | Bridier, A., Sanchez-Vizuete, P., Guilbaud, M., Piard, J.C., Naital, M. and Briandet, R. “Biofilm associated persistence of food borne pathogens.” Food Microbiol., 45, 167-178. Feb 2015.