Sources of Campylobacter colonization in broiler chickens

Applied and Environmental Microbiology

Volumn 69, Issue 8, 2003, Pages 4343-4351

  Newell, D G ^a   Fearnley, C ^a  

^a VETERINARY LABORATORIES AGENCY   (United Kingdom)

Author keywords

[No Author keywords available]

Indexed keywords

BACTERIUM;

AGRICULTURAL WORKER; BACTERIAL COLONIZATION; BROILER CHICKEN; CAMPYLOBACTER; CAMPYLOBACTER JEJUNI; CHICKEN; DISEASE TRANSMISSION; DRINKING BEHAVIOR; FARMING SYSTEM; FEEDING; HYGIENE; INFECTION CONTROL; LITTER DECOMPOSITION; NONHUMAN; PATHOPHYSIOLOGY; POULTRY; PREVALENCE; SHORT SURVEY; VERTICAL TRANSMISSION; WILD SPECIES;

ANIMALS; CAMPYLOBACTER; CHICKENS; DISEASE TRANSMISSION, HORIZONTAL; DISEASE TRANSMISSION, VERTICAL; DISINFECTION; ECOLOGY; HUMANS; WATER MICROBIOLOGY;

BACTERIA (MICROORGANISMS); CAMPYLOBACTER; CAMPYLOBACTER JEJUNI; GALLUS GALLUS;

EID: 0042530450     PISSN: 00992240     EISSN: None     Source Type: Journal    
DOI: 10.1128/AEM.69.8.4343-4351.2003     Document Type: Short Survey

References (116)

1. Achen, M., T. Y. Morishita, and E. C. Ley. 1998. Shedding and colonization of Campylobacter jejuni in broilers from day-of-hatch to slaughter age. Avian Dis. 42:732-737.
2. Advisory Committee on the Microbiological Safety of Food. 1992. Interim report on campylobacter. Her Majesty's Stationery Office, London, United Kingdom.
3. Allen, K. J., and M. W. Griffiths. 2001. Use of luminescent Campylobacter jejuni ATCC 33291 to assess eggshell colonization and penetration in fresh and retail eggs. J. Food Prot. 64:2058-2062.
4. Atanassova, V., and C. Ring. 1999. Prevalence of Campylobacter spp. in poultry and poultry meat in Germany. Int. J. Food Microbiol. 51:187-190.
5. Ayling, R. D., M. J. Woodward, S. Evans, and D. G. Newell. 1996. Restriction fragment length polymorphism of polymerase chain reaction products applied to the differentiation of poultry campylobacters for epidemiological investigations. Res. Vet Sci. 60:168-172.
6. Berndtson, E., M. L. Danielsson-Tham, and A. Engvall. 1996. Campylobacter incidence on a chicken farm and the spread of Campylobacter during the slaughter process. Int. J. Food Microbiol. 32:35-47.
7. Berndtson, E., U. Emanuelson, A. Engvall, and M. L. Danielsson-Tham. 1996. A 1-year epidemiological study of campylobacters in 18 Swedish chicken farms. Prev. Vet. Med. 26:167-185.
8. Beumer, R. R., J. de Vries, and F. M. Rombouts. 1992. Campylobacter jejuni non-culturable coccoid cells. Int. J. Food Microbiol. 15:153-163.
9. Bourque, M. 1983. Campylobacter jejuni in poultry in Quebec. Med. Vet. Quebec 13:18-23.
10. Buhr, R. J., N. A. Cox, N. J. Stern, M. T. Musgrove, J. L. Wilson, and K. L. Hiett. 2002. Recovery of Campylobacter from segments of the reproductive tract of broiler breeder hens. Avian Dis. 46:919-924.
11. Buswell, C. M., Y. M. Herlihy, L. M. Lawrence, J. T. M. McGuiggan, P. D. Marsh, C. W. Keevil, and S. A. Leach. 1998. Extended survival and persistence of Campylobacter spp. in water and aquatic biofilms and their detection by immunofluorescent-antibody and -rRNA staining. Appl. Environ. Microbiol. 64:733-741.
12. Camarda, A., D. G. Newell, R. Nasti, and G. Di Modugnoa. 2000. Genotyping Campylobacter jejuni strains isolated from the gut and oviduct of laying hens. Avian Dis. 44:907-912.
13. Cappelier, J. M., J. Minet, C. Magras, R. R. Colwell, and M. Federighi. 1999. Recovery in embryonated eggs of viable but nonculturable Campylobacter jejuni cells and maintenance of ability to adhere to HeLa cells after resuscitation. Appl. Environ. Microbiol. 65:5154-5157.
14. Cawthraw, S., R. Ayling, P. Nuijten, T. Wassenaar, and D. G. Newell. 1994. Isotype, specificity, and kinetics of systemic and mucosal antibodies to Campylobacter jejuni antigens, including flagellin, during experimental oral infections of chickens. Avian Dis. 38:341-349.
15. Cawthraw, S. A., L. Lind, B. Kaijser, and D. G. Newell. 2000. Antibodies, directed towards Campylobacter jejuni antigens, in sera from poultry abattoir workers. Clin. Exp. Immunol. 122:55-60.
16. Cawthraw, S. A., T. M. Wassenaar, R. Ayling, and D. G. Newell. 1996. Increased colonization potential of Campylobacter jejuni strain 81116 after passage through chickens and its implication on the rate of transmission within flocks. Epidemiol. Infect. 117:213-215.
17. Chou, J., and H. Tsai. 2001. Prevalence and antimicrobial susceptibility of Salmonella and Campylobacter from meat-type chickens in Taiwan. J. Chin. Soc. Vet. Sci. 27:27-38.
18. Chuma, T., K. Makino, K. Okamoto, and H. Yugi. 1997. Analysis of distribution of Campylobacter jejuni and Campylobacter coli in broilers by using restriction fragment length polymorphism of flagellin gene. J. Vet. Med. Sci. 59:1011-1015.
19. Chuma, T., K. Yano, H. Omori, K. Okamoto, and H. Yugi. 1997. Direct detection of Campylobacter jejuni in chicken cecal contents by PCR. J. Vet. Med. Sci. 59:85-87.
20. Clark, A. G., and D. H. Bueschkens. 1985. Laboratory infection of chicken eggs with Campylobacter jejuni by using temperature or pressure differentials. Appl. Environ. Microbiol. 49:1467-1471.
21. Cox, N., N. Stern, J. Wilson, M. Musgrove, R. Buhr, and R. Hiett. 2001. Isolation of campylobacter from semen samples of commercial 50 week old parent roosters. Int. J. Med. Microbiol. 291:39.
22. Cox, N. A., N. J. Stern, K. L. Hiett, and M. E. Berrang. 2002. Identification of a new source of Campylobacter contamination in poultry: transmission from breeder hens to broiler chickens. Avian Dis. 46:535-541.
23. Craven, S. E., N. J. Stern, E. Line, J. S. Bailey, N. A. Cox, and P. Fedorka-Cray. 2000. Determination of the incidence of Salmonella spp., Campylobacter jejuni, and Clostridium perfringens in wild birds near broiler chicken houses by sampling intestinal droppings. Avian Dis. 44:715-720.
24. Doyle, M. P. 1984. Association of Campylobacter jejuni with laying hens and eggs. Appl. Environ. Microbiol. 47:533-536.
25. Engvall, A., A. Bergqvist, K. Sandstedt, and M. Danielsson-Tham. 1986. Colonisation of broilers with campylobacter in conventional broiler-chicken flocks. Acta Vet. Scand. 27:540-547.
26. Evans, S., and A. R. Sayers. 2000. A longitudinal study of campylobacter infection of broiler flocks in Great Britain. Prevent. Vet. Med. 46:209-223.
27. Evans, S. J. 1997. Epidemiological studies of Salmonella and Campylobacter in poultry. Ph.D. thesis. University of London, London, United Kingdom.
28. Evans, S. J. 1992. Introduction and spread of thermophilic campylobacters in broiler flocks. Vet. Rec. 131:574-576.
29. Fallacara, D. M., C. M. Monahan, T. Y. Morishita, and R. F. Wack. 2001. Fecal shedding and antimicrobial susceptibility of selected bacterial pathogens and a survey of intestinal parasites in free-living waterfowl. Avian Dis. 45:128-135.
30. Fearnley, C., S. Cawthraw, and D. G. Newell. 1998. Sub-lethal injury to, and colonization potential of, Campylobacter jejuni strain 81116, p. 181-183. In A. J. Lastovica, D. G. Newell, and E. E. Lastovica (ed.), Campylobacter, Helicobacter and related organisms. Institute of Child Health, University of Cape Town, Cape Town, South Africa.
31. Fernandez, H., and N. Torres. 2000. Occurrence of Campylobacter jejuni and C. coli in three groups of hens of different geographic origin in southern Chile. Arch. Med. Vet. 32:241-244.
32. Fernie, D., and R. Park. 1977. The isolation and nature of campylobacters (microaerophilic vibrios) from laboratory and wild rodents. J. Med. Microbiol. 10:325-329.
33. Genigeorgis, C., M. Hassuneh, and P. Collins. 1986. Epidemiologic aspects of campylobacter infection and contamination in the chain of poultry meat, p. 268-269. In A. D. Pearson, M. B. Skirrow, H. Lior, and B. Rowe (ed.), Campylobacter III. Public Health Laboratory Service, London, United Kingdom.
34. Gibbens, J., S. Pascoe, S. Evans, R. Davies, and A. Sayers. 2001. A trial of biosecurity as a means to control campylobacter infection of broiler chickens. Prev. Vet. Med. 48:85-99.
35. Giessen, A. V. D., B. Bloemberg, et al. 1996. Epidemiological study on risk factors and risk-reducing measures for campylobacter infections in Dutch broiler flocks. Epidemiol. Infect. 117:245-250.
36. Glunder, G., U. Neumann, and S. Braune. 1992. Occurrence of Campylobacter spp. in young gulls, duration of Campylobacter infection and reinfection by contact. Zentralbl. Vet. B 39:119-122.
37. Gregory, E., D. W. Barnhart, N. J. Dreeson, N. J. Stern, and J. L. Corn. 1997. Epidemiological study of Campylobacter spp. in broilers: source, time of colonisation and prevalence. Avian Dis. 41:890-898.
38. Hald, B., K. Knudsen, P. Lind, and M. Madsen. 2001. Study of the infectivity of saline-stored Campylobacter jejuni for day-old chicks. Appl. Environ. Microbiol. 67:2388-2392.
39. Hald, B., E. Rattenborg, and M. Madsen. 2001. Role of batch depletion of broiler houses on the occurrence of Campylobacter spp. in chicken flocks. Lett. Appl. Microbiol. 32:253-256.
40. Hald, B., A. Wedderkopp, and M. Madsen. 2000. Thermophilic Campylobacter spp. in Danish broiler production: a cross sectional survey and a retrospective analysis of risk factors for occurrence in broiler flocks. Avian Pathol. 29:123-131.
41. Hald, T., and T. Brondsted. 2000. Annual report on zoonoses in Denmark 2000. Ministry of Food, Agriculture and Fisheries, Copenhagen, Denmark.
42. Hartnett, E., L. Kelly, D. Newell, M. Wooldridge, and G. Gettinby. 2001. A quantitative risk assessment for the occurrence of Campylobacter in chickens at the point of slaughter. Epidemiol. Infect. 127:195-206.
43. Heuer, O., K. Pedersen, J. Andersen, and M. Madsen. 2001. Prevalence and antimicrobial susceptibility of thermophilic campylobacters in organic and conventional broiler flocks. Lett. Appl. Microbiol. 33:269-274.
44. Hiett, K., N. Stern, J. Bailey, P. Fedorka-Cray, N. Cox, S. Craven, M. Musgrove, and S. Ladely. 2001. Molecular subtype analyses of Campylobacter spp. in selected United States poultry production and processing operations. Int. J. Med. Microbiol. 291:42.
45. Hiett, K. L., N. A. Cox, R. J. Buhr, and N. J. Stern. 2002. Genotype analyses of Campylobacter isolated from distinct segments of the reproductive tracts of broiler breeder hens. Curr. Microbiol. 45:400-404.
46. Hiett, K. L., N. A. Cox, and N. J. Stern. 2002. Direct polymerase chain reaction detection of Campylobacter spp. in poultry hatchery samples. Avian Dis. 46:219-223.
47. Hiett, K. L., N. J. Stern, P. Fedorka-Cray, N. A. Cox, M. T. Musgrove, and S. Ladely. 2002. Molecular subtype analyses of Campylobacter spp. from Arkansas and California poultry operations. Appl. Environ. Microbiol. 68: 6220-6236.
48. Hudson, J., C. Nicol, J. Wright, R. Whyte, and S. Hasell. 1999. Seasonal variation of campylobacter types from human cases, raw chicken, milk and water. J. Appl. Microbiol. 87:115-124.
49. Humphrey, T. J. 1986. Techniques for the optimum recovery of cold injured Campylobacter jejuni from milk or water. J. Appl. Bacteriol. 61:125-132.
50. Humphrey, T. J., A. Henley, and D. G. Lanning. 1993. The colonization of broiler chickens with Campylobacter jejuni: some epidemiological investigations. Epidemiol. Infect. 110:601-607.
51. Jacobs-Reitsma, W. 1995. Campylobacter in breeder flocks. Avian Dis. 39:355-359.
52. Jacobs-Reitsma, W., C. Becht, T. De Vries, J. Van der Plas, B. Duim, and J. Wagenaar. 2001. No evidence for vertical transmission of campylobacter in a study on Dutch breeder and broiler farms. Int. J. Med. Microbiol. 291:39.
53. Jacobs-Reitsma, W. F., A. W. van de Giessen, N. M. Bolder, and R. W. Mulder. 1995. Epidemiology of Campylobacter spp. at two Dutch broiler farms. Epidemiol. Infect. 114:413-421.
54. Jeffrey, J. S., E. R. Atwill, and A. Hunter. 2001. Farm and management variables linked to fecal shedding of Campylobacter and Salmonella in commercial squab production. Poult. Sci. 80:66-70.
55. Jones, D. M., E. M. Sutcliffe, and A. Curry. 1991. Recovery of viable but non-culturable Campylobacter jejuni. J. Gen. Microbiol. 137:2477-2482.
56. Jones, K., S. Howard, and J. S. Wallace. 1999. Intermittent shedding of thermophilic campylobacters by sheep at pasture. J. Appl. Microbiol. 86: 531-536.
57. Kapperud, G., E. Skjerve, L. Vik, K. Hauge, A. Lysaker, I. Aalmen, S. Ostroff, and M. Potter. 1993. Epidemiological investigation of risk factors for campylobacter colonisation in Norwegian broiler flocks. Epidemiol. Infect. 111:245-255.
58. Kazwala, R. R., J. D. Collins, J. Hannan, R. A. Crinion, and H. O'Mahony. 1990. Factors responsible for the introduction and spread of Campylobacter jejuni infection in commercial poultry production. Vet. Rec. 126:305-306.
59. Khoury, C. A., and R. J. Meinersmann. 1995. A genetic hybrid of the Campylobacter jejuni fla4 gene with LT-B of Escherichia coli and assessment of the efficacy of the hybrid protein as an oral chicken vaccine. Avian Dis. 39:812-820.
60. King, V., A. Bavetsia, and N. Bumstead. 1993. Effect of host lineage on the virulence of Campylobacter jejuni/coli in the chicken embryo model. FEMS Microbiol. Lett. 106:271-274.
61. Lindblom, G. B., E. Sjorgren, and B. Kaijser. 1986. Natural campylobacter colonization in chickens raised under different environmental conditions. J. Hyg. (London) 96:385-391.
62. Luechtefeld, N. A., M. J. Blaser, L. B. Reller, and W. L. Wang. 1980. Isolation of Campylobacter fetus subsp. jejuni from migratory waterfowl. J. Clin. Microbiol. 12:406-408.
63. Medema, G. J., F. M. Schets, A. W. van de Giessen, and A. H. Havelaar. 1992. Lack of colonization of 1 day old chicks by viable, non-culturable Campylobacter jejuni. J. Appl. Bacteriol. 72:512-516.
64. Miflin, J., J. Templeton, and S. More. 2001. An improved sampling strategy for the study of Campylobacter spp. in poultry flocks. Int. J. Med. Microbiol. 291:38.
65. Neill, S., J. Campbell, and J. O'Brien. 1985. Egg penetration by Campylobacter jejuni. Avian Dis. 14:313-320.
66. Nesbit, E. G., P. Gibbs, D. W. Dreesen, and M. D. Lee. 2001. Epidemiologic features of Campylobacter jejuni isolated from poultry broiler houses and surrounding environments as determined by use of molecular strain typing. Am. J. Vet. Res. 62:190-194.
67. Newell, D. G. 2001. Animal models of Campylobacter jejuni colonization and disease and the lessons to be learned from similar Helicobacter pylori models. Symp. Ser. Soc. Appl. Microbiol. 30:57S-67S.
68. Newell, D. G. 2001. The molecular epidemiology of campylobacters in poultry and poultry meat and use to develop intervention strategies. Final report FS3033. Food Standards Agency, London, United Kingdom.
69. Newell, D. G., J. E. Shreeve, M. Toszeghy, G. Domingue, S. Bull, T. Humphrey, and G. Mead. 2001. Changes in the carriage of Campylobacter strains by poultry carcasses during processing in abattoirs. Appl. Environ. Microbiol. 67:2636-2640.
70. Noor, S. M., A. J. Husband, and P. R. Widders. 1995. In ovo oral vaccination with Campylobacter jejuni establishes early development of intestinal immunity in chickens. Br. Poult. Sci. 36:563-573.
71. Pattison, M. 2001. Practical intervention strategies for campylobacter. Symp. Ser. Soc. Appl. Microbiol. 30:121S-125S.
72. Payne, R. E., M. D. Lee, D. W. Dreesen, and H. M. Barnhart. 1999. Molecular epidemiology of Campylobacter jejuni in broiler flocks using randomly amplified polymorphic DNA-PCR and 23S rRNA-PCR and role of litter in its transmission. Appl. Environ. Microbiol. 65:260-263.
73. Pearson, A. D., M. Greenwood, T. D. Healing, D. Rollins, M. Shahamat, J. Donaldson, and R. R. Colwell. 1993. Colonization of broiler chickens by waterborne Campylobacter jejuni. Appl. Environ. Microbiol. 59:987-996.
74. Pearson, A. D., M. H. Greenwood, R. K. Feltham, T. D. Healing, J. Donaldson, D. M. Jones, and R. R. Colwell. 1996. Microbial ecology of Campylobacter jejuni in a United Kingdom chicken supply chain: intermittent common source, vertical transmission, and amplification by flock propagation. Appl. Environ. Microbiol. 62:4614-4620.
75. Petersen, L., E. M. Nielsen, and S. L. On. 2001. Serotype and genotype diversity and hatchery transmission of Campylobacter jejuni in commercial poultry flocks. Vet. Microbiol. 82:141-154.
76. Refregier-Petton, J., N. Rose, M. Denis, and G. Salvat. 2001. Risk factors for Campylobacter spp. contamination in French broiler chicken flocks at the end of the rearing period. Prevent. Vet. Med. 50:89-100.
77. Rice, B. E., D. M. Rollins, E. T. Mallinson, L. Carr, and S. W. Joseph. 1997. Campylobacter jejuni in broiler chickens: colonization and humoral immunity following oral vaccination and experimental infection. Vaccine 15:1922-1932.
78. Ringoir, D. D., and V. Korolik. 2002. Colonisation phenotype and colonization differences in Campylobacter jejuni strains in chickens before and after passage in vivo. Vet. Microbiol. 92:225-235.
79. Rollins, D. M., and R. R. Colwell. 1986. Viable but nonculturable stage of Campylobacter jejuni and its role in survival in the natural aquatic environment. Appl. Environ. Microbiol. 52:531-538.
80. Sahin, O., Q. Zhang, J. C. Meitzler, B. S. Harr, T. Y. Morishita, and R. Mohan. 2001. Prevalence, antigenic specificity, and bactericidal activity of poultry anti-Campylobacter maternal antibodies. Appl. Environ. Microbiol. 67:3951-3957.
81. Saleha, A., A. Ibrahim, and A. Kamarzaman. 1996. Campylobacter in village chickens: prevalence and biotypes. J. Vet. Malaysia. 8:25-27.
82. Schoeni, J. L., and M. P. Doyle. 1992. Reduction of Campylobacter jejuni colonization of chicks by cecum-colonizing bacteria producing anti-C. jejuni metabolites. Appl. Environ. Microbiol. 58:664-670.
83. Shane, S. M., D. H. Gifford, and K. Yogasundram. 1986. Campylobacter jejuni contamination of eggs. Vet. Res. Commun. 10:487-492.
84. Shanker, S., A. Lee, and T. C. Sorrell. 1986. Campylobacter jejuni in broilers: the role of vertical transmission. J. Hyg. (London) 96:153-159.
85. Shreeve, J. E., M. Toszeghy, M. Pattison, and D. G. Newell. 2000. Sequential spread of Campylobacter infection in a multi-pen broiler house. Avian Dis. 44:983-988.
86. Shreeve, J. E., M. Toszeghy, A. Ridley, and D. G. Newell. 2002. The carryover of Campylobacter isolates between sequential poultry flocks. Avian Dis. 46:378-385.
87. Skirrow, M. 1994. Diseases due to Campylobacter, helicobacter and related organisms. J. Comp. Pathol. 111:113-149.
88. Slader, J., G. Domingue, F. Jorgensen, K. McAlpine, R. J. Owen, F. J. Bolton, and T. J. Humphrey. 2002. Impact of transport crate reuse and of catching and processing on Campylobacter and Salmonella contamination of broiler chickens. Appl. Environ. Microbiol. 68:713-719.
89. Stanley, K., J. Wallace, J. Currie, P. Diggle, and K. Jones. 1998. Seasonal variation of thermophilic campylobacters in beef cattle, dairy cattle and calves. J. Appl. Microbiol. 85:472-480.
90. Stephens, C. P., S. L. On, and J. A. Gibson. 1998. An outbreak of infectious hepatitis in commercially reared ostriches associated with Campylobacter coli and Campylobacter jejuni. Vet. Microbiol. 61:183-190.
91. Stern, N., and M. Robach. 1998. Chlorination of broiler chicken drinking waters and colonization by Campylobacter spp., p. 410-414. In A. Lastovica, D. Newell, and E. Lastovica (ed.), Campylobacter, Helicobacter and related organisms. Institute of Child Health, University of Cape Town, Cape Town, South Africa.
92. Stern, N. J., P. Fedorka-Cray, J. S. Bailey, N. A. Cox, S. E. Craven, K. L. Hiett, M. T. Musgrove, S. Ladely, D. Cosby, and G. C. Mead. 2001. Distribution of Campylobacter spp. in selected U.S. poultry production and processing operations. J. Food Prot. 64:1705-1710.
93. Stern, N. J., M. A. Myszewski, H. M. Barhart, and D. W. Dreeson. 1997. Flagellin A gene restriction fragment length polymorphism patterns of Campylobacter spp. isolates from broiler production sources. Avian Dis. 41:899-905.
94. Stern, N. J., M. C. Robach, N. A. Cox, and M. T. Musgrove. 2002. Effect of drinking water chlorination on Campylobacter spp. colonization of broilers. Avian Dis. 46:401-404.
95. Talibart, R., M. Denis, A. Castillo, J. M. Cappelier, and G. Ermel. 2000. Survival and recovery of viable but noncultivable forms of Campylobacter in aqueous microcosm. Int. J. Food Microbiol. 55:263-267.
96. Tanaka, H., et al. 1986. Isolation of Campylobacter from human patients with sporadic diarrhoea and from animals and the serovars isolated. J. Jpn. Vet. Med. Assoc. 39:791-795.
97. Tauxe, R. 1992. Epidemiology of Campylobacter jejuni infections in the United States and other industrialized nations, p. 9-19. In I. Nachamkin, M. Blaser, and L. Tompkins (ed.), Campylobacter jejuni: current status and future trends. American Society for Microbiology, Washington, D.C.
98. Terzieva, S. I., and G. A. McFeters. 1991. Survival and injury of Escherichia coli, Campylobacter jejuni, and Yersinia enterocolitica in stream water. Can. J. Microbiol. 37:785-790.
99. Thomas, C., D. J. Hill, and M. Mabey. 1999. Evaluation of the effect of temperature and nutrients on the survival of Campylobacter spp. in water microcosms. J. Appl. Microbiol. 86:1024-1032.
100. Thomas, L., K. Lang, R. Good, M. Panaccio, and P. Widders. 1997. Genotypic diversity among Campylobacter jejuni isolates in a commercial broiler flock. Appl. Environ. Microbiol. 63:1874-1877.
101. Trachoo, N., J. F. Frank, and N. J. Stern. 2002. Survival of Campylobacter jejuni biofilms isolated from chicken houses. J. Food Prot. 65:1110-1116.
102. Turkson, P. K., K. J. Lindqvist, and G. Kapperud. 1988. Isolation of Campylobacter spp. and Yersinia enterocolitica from domestic animals and human patients in Kenya. APMIS 96:141-146.
103. Umunnabuike, A. C., and E. A. Irokanulo. 1986. Isolation of Campylobacter subsp. jejuni from Oriental and American cockroaches caught in kitchens and poultry houses in Vom, Nigeria. Int. J. Zoonoses 13:180-186.
104. Uyttendaele, M., R. Schukkink, B. van Gemen, and X. Debevere. 1996. Comparison of the nucleic acid amplification system of NASBA and agar isolation for detection of pathogenic campylobacter in naturally contaminated poultry products. J. Food Product. 59:683-687.
105. van de Giessen, A. W., C. J. Heuvelman, T. Abee, and W. C. Hazeleger. 1996. Experimental studies on the infectivity of non-culturable forms of Campylobacter spp. in chicks and mice. Epidemiol. Infect. 117:463-470.
106. van der Giessen, A., J. Tilburg, W. Ritmeester, and J. van der Plas. 1998. Reduction of campylobacter infections in broiler flocks by application of hygiene measures. Epidemiol. Infect. 121:57-66.
107. Verwoerd, D. J. 2000. Ostrich diseases. Rev. Sci. Tech. 19:638-661.
108. Vogt, R. L., H. E. Sours, T. Barrett, R. A. Feldman, R. J. Dickinson, and L. Witherell. 1982. Campylobacter enteritis associated with contaminated water. Ann. Intern. Med. 96:292-296.
109. Waldenstrom, J., T. Broman, I. Carlsson, D. Hasselquist, and B. Olsen. 2001. Prevalence of Campylobacter spp. in migrating wild birds in Sweden - ecological considerations of carriership. Int. J. Med. Microbiol. 291:37-38.
110. Wallace, J., K. Stanley, J. Currie, P. Diggle, and J. Jones. 1997. Seasonality of thermophilic Campylobacter populations in chickens. J. Appl. Microbiol. 82:224-230.
111. Wallace, J. S., K. N. Stanley, and K. Jones. 1998. The colonization of turkeys by thermophilic campylobacters. J. Appl. Microbiol. 85:224-230.
112. Wassenaar, T. M., B. A. van der Zeijst, R. Ayling, and D. G. Newell. 1993. Colonization of chicks by motility mutants of Campylobacter jejuni demonstrates the importance of flagellin A expression. J. Gen. Microbiol. 139: 1171-1175.
113. Wedderkopp, A., K. Gradel, J. Jorgensen, and M. Madsen. 2001. Preharvest surveillance of Campylobacter and Salmonella in Danish broiler flocks: a 2 year study. Int. J. Food Microbiol. 68:53-59.
114. Wedderkopp, A., E. Rattenborg, and M. Madsen. 2000. National surveillance of Campylobacter in broilers at slaughter in Denmark in 1998. Avian Dis. 44:993-999.
115. World Health Organization. 2002. The increasing incidence of human campylobacteriosis. Report and proceedings of a W.H.O. consultation of experts, Copenhagen, Denmark, 21-25 November 2000. W.H.O./CDS/CSR/APH publication 2001.7. World Health Organization, Geneva, Switzerland.
116. Yogasundram, K., S. M. Shane, and K. S. Harrington. 1989. Prevalence of Campylobacter jejuni in selected domestic and wild birds in Louisiana. Avian Dis. 33:664-667.