Potential ecological and epidemiological factors affecting the persistence of classical swine fever in wild boar Sus scrofa populations

Mammal Review

Volumn 37, Issue 1, 2007, Pages 1-20

  Kramer Schadt, Stephanie ^a   Fernandez N ^a,b   Thulke, H H ^a  

^a HELMHOLTZ CENTRE FOR ENVIRONMENTAL RESEARCH UFZ   (Germany)

^b DEPARTMENT OF CONSERVATION BIOLOGY   (Spain)

Author keywords

Disease course; Disease management; Diseasecy cling; Epidemiology; Host virus system; Wildlife

Indexed keywords

DISEASE SPREAD; DISEASE TRANSMISSION; EPIDEMIOLOGY; MAMMAL; VIRUS; WILD POPULATION;

EURASIA; EUROPE;

SUIDAE; SUS SCROFA;

EID: 34147172183     PISSN: 03051838     EISSN: 13652907     Source Type: Journal    
DOI: 10.1111/j.1365-2907.2007.00097.x     Document Type: Review

References (108)

1. Acevedo-Whitehouse, K., Vicente, J., Gortazar, C., Höfle, U., Fernández-de-Mera, I.G. & Amos, W. (2005) Genetic resistance to bovine tuberculosis in the Iberian wild boar. Molecular Ecology, 14, 3209-3217.
2. Ahrens, U., Kaden, V., Drexler, C. & Visser, N. (2000) Efficacy of the classical swine fever (CSF) marker vaccine Porcilis® Pesti in pregnant sows. Veterinary Microbiology, 77, 83-97.
3. Andrzejewski, R. & Jezierski, W. (1978) Management of a wild boar population and its effects on commercial land. Acta Theriologica, 23, 309-339.
4. Artois, M., Depner, K.R., Guberti, V., Hars, J., Rossi, S. & Rutili, D. (2002) Classical swine fever (hog cholera) in wild boar in Europe. Revue Scientifique et Technique de l'Office International des Epizooties, 21, 287-303.
5. Aubert, M. (1994) Control of rabies in foxes: What are the appropriate measures? Veterinary Record, 134, 55-59.
6. Biagetti, M., Greiser-Wilke, I. & Rutili, D. (2001) Molecular epidemiology of classical swine fever in Italy. Veterinary Microbiology, 83, 205-215.
7. Bieber, C. & Ruf, T. (2005) Population dynamics in wild boar Sus scrofa: Ecology, elasticity of growth rate and implications for the management of pulsed resource consumers. Journal of Applied Ecology, 42, 1203-1213.
8. Boitani, L., Mattei, L., Nonis, D. & Corsi, F. (1994) Spatial and activity patterns of wild boars in Tuscany, Italy. Journal of Mammalogy, 75, 600-612.
9. Brunner, J.L., Schock, D.M., Davidson, E.W. & Collins, J.P. (2004) Intraspecific reservoirs: Complex life history and the persistence of a lethal ranavirus. Ecology, 85, 560-566.
10. Chenut, G., Saintilan, A.F., Burger, C., Rosenthal, F., Cruciere, C., Picard, M., Bruyere, V. & Albina, E. (1999) Oral immunisation of swine with a classical swine fever vaccine (Chinese strain) and transmission studies in rabbits and sheep. Veterinary Microbiology, 64, 265-276.
11. Courchamp, F., Pontier, D., Langlais, M. & Artois, M. (1995) Population dynamics of feline immunodeficiency virus within populations of cats. Journal of Theoretical Biology, 175, 553-560.
12. Cross, P.C., Lloyd-Smith, J.O., Johnson, P.L.F. & Getz, W.M. (2005) Duelling timescales of host movement and disease recovery determine invasion of disease in structured populations. Ecology Letters, 8, 587-595.
13. Dahle, J. & Liess, B. (1992) A review on classical swine fever infections in pigs: Epizootiology, clinical disease, and pathology. Comparative Immunology, Microbiology and Infectious Diseases, 15, 203-211.
14. Dahle, J., Patzelt, Th., Schagemann, G. & Liess, B. (1993) Antibody prevalence of hog cholera, bovine viral diarrhoea and Aujeszky's disease virus in wild boars in Northern Germany. Deutsche tierärztliche Wochenschrift, 100, 330-333.
15. Dardallion, M. (1988) Wild boar social groupings and their seasonal changes in the Camargue, southern France. Zeitschrift für Säugetierkunde, 53, 22-30.
16. Depner, K.R., Müller, A., Gruber, A., Rodriguez, A., Bickhardt, K. & Liess, B. (1995) Classical swine fever in wild boar (Sus scrofa). Experimental infections and viral persistence. Deutsche Tierarztliche Wochenschrift, 102, 381-384.
17. Depner, K.R., Moennig, V. & Liess, B. (1996) Epidemiologische Betrachtungen zur 'typischen' und 'atypischen' Schweinepest. Amtstierärztlicher Dienst und Lebensmittelkontrolle, 3, 335-342.
18. Depner, K.R., Moennig, V. & Liess, B. (1997) Epidemiological aspects of the infectious biology of classical swine fever. Praktischer Tierarzt, 78, 63-67.
19. Depner, K.R., Hinrichs, U., Bickhardt, K., Greiser-Wilke, I., Pohlenz, J., Moennig, V. & Liess, B. (1997) Influence of breed-related factors on the course of classical swine fever virus infection. Veterinary Record, 140, 506-507.
20. Depner, K.R., Kern, B. & Liess, B. (1998) Epidemiologische Relevanz der Persistenz von KSP-Virus beim Schwarzwild (Sus scrofa sp.). Amtstierärztlicher Dienst und Lebensmittelkontrolle, 5, 244-248.
21. Depner, K.R., Müller, T., Lange, E., Staubach, C. & Teuffert, J. (2000) Transient classical swine fever virus infection in wild boar piglets partially protected by maternal antibodies. Deutsche Tierarztliche Wochenschrift, 107, 66-68.
22. Dewulf, J., Laevens, H., Koenen, F., Mintiens, K. & de Kruif, A. (2001a) An experimental infection with classical swine fever virus in pregnant sows: Transmission of the virus, course of the disease, antibody response, and effect on gestation. Journal of Veterinary Medicine B, 48, 591.
23. Dewulf, J., Laevens, H., Koenen, F., Vanderhallen, H., Mintiens, K., Deluyker, H. & de Kruif, A. (2001b) An experimental infection with classical swine fever in E2 sub-unit marker vaccine in vaccinated and in non-vaccinated pigs. Vaccine, 19, 475-482.
24. Dewulf, J., Laevens, H., Koenen, F., Mintiens, K. & de Kruif, A. (2001c) Evaluation of the potential of dogs, cats and rats to spread classical swine fever virus. Veterinary Record, 149, 212-213.
25. Dewulf, J., Laevens, H., Koenen, F., Mintiens, K. & de Kruif, A. (2002a) Airborne transmission of classical swine fever virus under experimental conditions. Veterinary Record, 147, 735-738.
26. Dewulf, J., Laevens, H., Koenen, F., Mintiens, K. & de Kruif, A. (2002b) An experimental infection to investigate the indirect transmission of classical swine fever virus by excretions of infected pigs. Journal of Veterinary Medicine B, 49, 452-456.
27. Dewulf, J., Laevens, H., Koenen, F., Mintiens, K. & de Kruif, A. (2002c) An E2 sub-unit marker vaccine does not prevent horizontal of vertical transmission of classical swine fever virus. Vaccine, 20, 86-91.
28. Dewulf, J., Koenen, F., Mintiens, K., Denis, P., Ribbens, S. & de Kruif, A. (2004) Analytical performance of several classical swine fever laboratory diagnostic techniques on live animals for detection of infection. Journal of Virological Methods, 119, 137-143.
29. Edwards, S. (2000) Survival and inactivation of classical swine fever virus. Veterinary Microbiology, 73, 175-181.
30. Fenner, F. & Ratcliffe, F.N. (1965) Myxomatosis. Cambridge University Press, Cambridge, UK.
31. Fernandez-Llario, P., Carranza, J. & Hidalgo de Trucios, S.J. (1996) Social organization of the wild boar (Sus scrofa) in Donana National Park. Miscellania Zoologica, 19, 9-18.
32. Ferrari, G., Guidoni, M., Amaddeo, D., Autorino, G.L. & Forletta, R. (1998) Epidemiology of CSF in wild boar in Toscana. In: Report on Measures to Control Classical Swine Fever in European Wild Boar, pp. 62-66. Commission of the European Communities, Brussels.
33. Floegel-Niesmann, G., Bunzenthal, C., Fischer, S. & Moennig, V. (2003) Virulence of recent and former classical swine fever isolates evaluated by their clinical and pathological signs. Journal of Veterinary Medicine B, 50, 214-220.
34. Frey, H.-R., Liess, B., Richter-Reichhelm, H.B., von Benten, K. & Trautwein, G. (1980) Experimental transplacental transmission of hog cholera virus in pigs. I. Virological and serological studies. Zentralblad fur Veterinarmedicine B, 27, 154-164.
35. Fritzemeier, J., Greiser-Wilke, I., Depner, K. & Moennig, V. (1998) Characterization of CSF virus isolates originating from German wild boar. In: Report on Measures to Control Classical Swine Fever in European Wild Boar, pp. 107-109. Commission of the European Communities, Brussels.
36. Fritzemeier, J., Teuffert, J., Greiser-Wilke, I., Staubach, C., Schluter, H. & Moennig, V. (2000) Epidemiology of classical swine fever in Germany in the 1990s. Veterinary Microbiology, 77, 29-41.
37. Gandon, S., van Baalen, M. & Jansen, V.A.A. (2002) The evolution of parasite virulence, superinfection, and host resistance. American Naturalist, 159, 658-669.
38. Genov, P. & Ferrari, G. (1998) Effect of hunting on the use of space and habitat of wild boars. In: Report on Measures to Control Classical Swine Fever in European Wild Boar, pp. 32-36. Commission of the European Community, Brussels.
39. Gortázar, C., Acevada, P., Ruiz-Fons, F. & Vicente, J. (2006) Disease risks and overabundance of game species. European Journal of Wildlife Research, 52 (2), 81-87.
40. Goulding, M.J., Roper, T.J., Smith, G.C. & Baker, S.J. (2003) Presence of free-living wild boar Sus scrofa in southern England. Wildlife Biology, 9, 15-20.
41. Greiser-Wilke, I., Fritzemeier, J., Koenen, F., Vanderhallen, H., Rutili, D., De Mia, G.-M., Romero, L., Rosell, R., Sanchez-Vizcaino, J.M. & San Gabriel, A. (2000) Molecular epidemiology of a large classical swine fever epidemic in the European Union in 1997-1998. Veterinary Microbiology, 77, 17-27.
42. Guberti, V., Rutili, D., Ferrari, G., Patta, C. & Oggaino, A. (1998) Estimate the threshold abundance for the persistence of the classical swine fever in the wild boar population of the eastern Sardinia. In: Report on Measures to Control Classical Swine Fever in European Wild Boar, pp. 54-61. Commission of the European Community, Brussels.
43. Hone, J., Pech, R. & Yip, P. (1992) Estimation of the dynamics and rate of transmission of classical swine fever (hog cholera) in wild pigs. Epidemiology and Infection, 108, 377-386.
44. Hosseini, P.R., Dhondt, A.A. & Dobson, A. (2004) Seasonality and wildlife disease: How seasonal birth, aggregation and variation in immunity affect the dynamics of Mycoplasma gallisepticum in house finches. Proceedings of the Royal Society of London Series B-Biological Sciences, 271, 2569-2577.
45. Hudson, P.J., Rizzoli, A., Grenfell, B.T., Heesterbeek, H. & Dobson, A.P. (2002) The Ecology of Wildlife Diseases. Oxford University Press, New York.
46. Jedrzejewska, B., Jedrzejewski, W., Bunevich, A.N., Milkowski, L. & Krasinski, Z. (1997) Factors shaping population densities and increase rates on ungulates in Bialowieza Primeval Forest (Poland and Belarus) in the 19th and 20th century. Acta Theriologica, 42, 399-451.
47. Jeltsch, F., Müller, M.S., Grimm, V., Wissel, C. & Brandl, R. (1997) Pattern formation triggered by rare events: Lessons from the spread of rabies. Proceedings of the Royal Society of London B, 264, 495-503.
48. Kaden, V. (1999) Control of classical swine fever in wild boar population. Zeitschrift für Jagdwissenschaft, 45, 45-59.
49. Kaden, V. & Lange, B. (2001) Oral immunisation against classical swine fever (CSF): Onset and duration of immunity. Veterinary Microbiology, 82, 301-310.
50. Kaden, V. & Lange, E. (2004) Development of maternal antibodies after oral vaccination of young female wild boar against classical swine fever. Veterinary Microbiology, 103, 115-119.
51. Kaden, V., Ziegler, U., Lange, E. & Dedek, J. (2000a) Classical swine fever virus: Clinical, virological, serological and hematological findings after infection of domestic pigs and wild boars with the field isolate 'Spante' originating from wild boar. Berliner und Munchener Tierarztliche Wochenschrift, 113, 412-416.
52. Kaden, V., Lange, E., Fischer, U. & Strebelow, G. (2000b) Oral immunisation of wild boar against classical swine fever: Evaluation of the first field study in Germany. Veterinary Microbiology, 73, 239-252.
53. Kaden, V., Heyne, H., Kiupel, H., Letz, W., Kern, B., Lemmer, U., Gossger, K., Rothe, A., Bohme, H. & Tyrpe, P. (2002) Oral immunisation of wild boar against classical swine fever: Concluding analysis of the recent field trials in Germany. Berliner und Munchener Tierarztliche Wochenschrift, 115, 179-185.
54. Kaden, V., Lange, E., Steyer, H., Bruer, W. & Langner, Ch (2003) Role of birds in transmission of classical swine fever virus. Journal of Veterinary Medicine B, 50, 357-359.
55. Kaden, V., Lange, E., Polster, U., Klopfleisch, R. & Teifke, J.P. (2004) Studies on the virulence of two field isolates of the classical swine fever genotype 2.3 Rostock in wild boars of different age groups. Journal of Veterinary Medicine B, 51, 202-208.
56. Kaden, V., Steyer, H., Schnabel, J. & Bruer, W. (2005) Classical swine fever (CSF) in wild boar: The role of the transplacental infection in the perpetuation of CSF. Journal of Veterinary Medicine B, 52, 161.
57. Kern, B., Depner, K.R., Letz, W., Rott, M., Thalheim, S., Nitschke, B., Plagemann, R. & Liess, B. (1999) Incidence of classical swine fever (CSF) in wild boar in a densely populated area indicating CSF virus persistence as a mechanism for virus perpetuation. Journal of Veterinary Medicine Series B-Infectious Diseases and Veterinary Public Health, 46, 63-67.
58. Laddomada, A. (2000) Incidence and control of CSF in wild boar in Europe. Veterinary Microbiology, 73, 121-130.
59. Laddomada, A., Patta, C., Oggiano, A., Caccia, A., Ruiu, A., Cossu, P. & Firinu, A. (1994) Epidemiology of classical swine fever in Sardinia: A serological survey of wild boar and comparison with African swine fever. Veterinary Microbiology, 134, 183-187.
60. Leaper, R., Massei, G., Gorman, M.L. & Aspinall, R. (1999) The feasibility of reintroducing wild boar (Sus scrofa) to Scotland. Mammal Review, 29, 239-259.
61. Lenghaus, C., Westbury, H., Collins, B., Ratnamoban, N. & Morrissy, C. (1994) Overview of the RHD project in Australia. In: Rabbit Haemorrhagic Disease: Issues in Assessment for Biological Control (Ed. by E.R.W.R. Munro), pp. 104-129. Bureau of Resource Sciences, Canberra, Australia.
62. Liess, B. (1987) Pathogenesis and epidemiology of hog cholera. Annales de recherches veterinaires, 18, 139-145.
63. Lloyd-Smith, J.O., Cross, P.C., Briggs, C.J., Daugherty, M., Getz, W.M., Latto, J., Sanchze, M.S., Smith, A.B. & Swei, A. (2005) Should we expect population thresholds for wildlife disease? Trends in Ecology and Evolution, 20, 511-519.
64. McCallum, H., Barlow, N. & Hone, J. (2001) How should pathogen transmission be modelled? Trends in Ecology and Evolution, 16, 295-300.
65. Mackinnon, M.J. & Read, A.F. (2004) Virulence in malaria: An evolutionary viewpoint. Philosophical Transactions of the Royal Society London B, 359, 965-986.
66. Maillard, D. & Fournier, P. (1995) Effects of shooting with hounds on size of resting range of wild boar (Sus scrofa L.) groups in Mediterranean habitat. Ibex, 3, 102-107.
67. Massei, G., Genov, P.V. & Staines, B.W. (1996) Diet, food availability, and reproduction of wild boar in a Mediterranean coastal area. Acta Theriologica, 41, 307-320.
68. Massei, G., Genov, P.V., Staines, B.W. & Gorman, M.L. (1997) Mortality of wild boar in a Mediterranean area in relation to sex and age. Journal of Zoology (London), 242, 394-400.
69. Mengeling, W.L. & Cheville, N.F. (1968) Host response to persistent infection with hog cholera virus. Proceedings of the 72nd Annual Meeting of the United States Animal Health Association (USAHA), 283-296.
70. Mengeling, W.L. & Packer, R.A. (1969) Pathogenesis of chronic hog cholera: Host response. American Journal of Veterinary Research, 30, 409-417.
71. Meuwissen, M.P.M., Horst, H.S., Huirne, R.B.M. & Dijkhuizen, A.A. (1999) A model to estimate the financial consequences of classical swine fever outbreaks: Principles and outcomes. Preventive Veterinary Medicine, 42, 249-270.
72. Meyer, H., Liess, B., Frey, H.-R., Hermanns, W. & Trautwein, G. (1981) Experimental transplacental transmission of hog cholera virus in pigs. IV. Virological and serological studies in newborn piglets. Zentralblad fur Veterinarmedicine B, 28, 659-668.
73. Meyers, G. & Thiel, H.-J. (1996) Molecular characterization of pestiviruses. Advances in Virus Research, 47, 53-118.
74. Mittelholzer, C., Moser, C., Tratschin, J.-D. & Hofmann, M.A. (2000) Analysis of classical swine fever virus replication kinetics allows differentitation of highly virulent from avirulent strains. Veterinary Microbiology, 74, 293-308.
75. Moennig, V. (2000) Introduction to classical swine fever: Virus, disease and control policy. Veterinary Microbiology, 73, 93-102.
76. Moennig, V., Albina, E., Depner, K., Ferrari, G., Guberti, V. & Vassant, J. (1999) Classical Swine Fever in Wild Boar. Document XXIV/B3/ R09/1999. European Commission.
77. Mollema, L., de Jong, M.C.M. & Van Boven, M. (2005) Prolonged persistence of bovine herpesvirus in small cattle herds: A model-based analysis. Epidemiology and Infection, 133, 137-148.
78. Mollison, D. & Levin, S.A. (1995) Spatial dynamics of parasitism. In: Ecology of Infectious Diseases in Natural Populations (Ed. by B.T. Grenfell & A.P. Dobson), pp. 384-398. Cambridge University Press, Cambridge, UK.
79. Moormann, R.J.M., Bouma, A., Kramps, J.A., Terpstra, C. & De Smit, H.J. (2000) Development of a classical swine fever subunit marker vaccine and companion diagnostic test. Veterinary Microbiology, 73, 209-219.
80. Morgan, E.R., Milner-Gulland, E.J., Torgerson, P.R. & Medley, G.F. (2004) Ruminating on complexity: Macroparasites of wildlife and livestock. Trends in Ecology and Evolution, 19, 181-188.
81. Narita, M., Kawashima, K., Kimura, K., Mikami, O., Shibahara, T., Yamada, S. & Sakoda, Y. (2000) Comparative immunohistopathology in pigs infected with highly virulent or less virulent strains of hog cholera virus. Veterinary Pathology, 37, 402-408.
82. Okarma, H., Jedrzejewska, B., Jedrzejewski, W., Krasinski, Z. & Milkowski, L. (1995) The roles of predation, snow cover, acorn crop, and man-related factors on ungulate mortality in Bialowieza Primeval Forest, Poland. Acta Theriologica, 40, 197-217.
83. Paton, D.J. & Greiser-Wilke, I. (2003) Classical swine fever - an update. Research in Veterinary Science, 75, 169-178.
84. Paton, D.J., McGoldrick, A., Greiser-Wilke, I., Parchariyanon, S., Song, J.-Y., Liou, P.P., Stadejek, T., Lowings, J.P., Björklund, H. & Belak, S. (2000) Genetic typing of classical swine fever virus. Veterinary Microbiology, 73, 137-157.
85. Plateau, E., Vannier, P. & Tillon, J.P. (1980) Experimental study of a mild virulence strain of hog cholera: Individual variations and horizontal transmission. Zentralblad fur Veterinarmedicine B, 27, 650-657.
86. Ribbens, S., Dewulf, J., Koenen, F., Laevens, H. & de Kruif, A. (2004a) Transmission of classical swine fever. A review. Veterinary Quarterly, 26, 146-155.
87. Ribbens, S., Dewulf, J., Koenen, F., Laevens, H., Mintiens, K. & de Kruif, A. (2004b) An experimental infection (II) to investigate the importance of indirect classical swine fever virus transmission by excretions and secretions of infected weaner pigs. Journal of Veterinary Medicine B, 51, 438-442.
88. Rossi, S., Artois, M., Pontier, D., Cruciere, C., Hars, J., Barrat, J., Pacholek, X. & Fromont, E. (2005a) Long-term monitoring of classical swine fever in wild boar (Sus scrofa sp.) using serological data. Veterinary Research, 36, 27-42.
89. Rossi, S., Fromont, E., Pontier, D., Cruciere, C., Hars, J., Barrat, J., Pacholek, X. & Artois, M. (2005b) Incidence and persistence of classical swine fever in free-ranging wild boar (Sus scrofa). Epidemiology and Infection, 133, 559-568.
90. Saez-Royuela, C. & Telleria, J.L. (1986) The increased population of the wild boar (Sus scrofa) in Europe. Mammal Review, 16, 97-101.
91. de Smit, A.J., Bouma, A., Terpstra, C. & Van Oirschot, J.T. (1999) Transmission of classical swine fever virus by artificial insemination. Veterinary Microbiology, 67, 239-249.
92. Smith, G.C. & Harris, S. (1989) The control of rabies in urban fox populations. In: Mammals as Pests (Ed. by R.J. Putman), pp. 209-224. Chapman & Hall, London.
93. Smith, G.C., Cheeseman, C.L., Wilkinson, D. & Clifton-Hadley, R.S. (2001) A model of bovine tuberculosis in the badger Meles meles: The inclusion of cattle and the use of a live test. Journal of Applied Ecology, 38, 520-535.
94. Sodeikat, G. & Pohlmeyer, K. (2002) Temporary home range modifications of wild boar family groups (Sus scrofa L.) caused by drive hunts in Lower Saxony (Germany). Zeitschrift für Jagdwissenschaft, 48, 161-166.
95. Sterner, R.T. & Smith, G.C. (2006) Modelling wildlife rabies: transmission, economics, and conservation. Biological Conservation, 131, 163-179.
96. Suradhat, S. & Damrongwatanapokin, S. (2003) The influence of maternal immunity on the efficacy of a classical swine fever vaccine against classical swine fever virus, genogroup 2.2, infection. Veterinary Microbiology, 92, 187-194.
97. Swinton, J., Woolhouse, M.E.J., Begon, M.E., Dobson, A.P., Ferroglio, E., Grenfell, B.T., Guberti, V., Hails, R.S., Heesterbeek, J.A.P., Lavanzza, A., Roberts, M.G., White, P.J. & Wilson, K. (2002) Microparasite transmission and persistence. In: The Ecology of Wildlife Diseases (Ed. by P.J. Hudson, A. Rizzoli, B.T. Grenfell, H. Heesterbeek & A.P. Dobson), pp. 83-101. Oxford University Press, New York.
98. Terpstra, C. (1987) Epizootiology of swine fever. Veterinary Quarterly, 9, 1-50.
99. Terpstra, C. (1988) Epizootiology of hog cholera. In: Classical Swine Fever and Related Viral Infections (Ed. by B. Liess), pp. 201-216. Martinus-Nijhoff Publishing, Dordrecht.
100. Truvé, J. & Lemel, J. (2003) Timing and distance of natal dispersal for wild boar Sus scrofa in Sweden. Wildlife Biology, 9, 51-57.
101. Uttenthal, A., Storgaard, T., Oleksiewicz, M.B. & de Stricker, K. (2003) Experimental infection with the Paderborn isolate of classical swine fever virus in 10-week-old pigs: Determination of viral replication kinetics by quantitative RT-PCR, virus isolation and antigen ELISA. Veterinary Microbiology, 92, 197-212.
102. Van Oirschot, J.T. (1977) A congenital persistent swine fever infection. II. Immune response to swine fever virus and unrelated antigens. Veterinary Microbiology, 2, 133-142.
103. Van Oirschot, J.T. & Terpstra, C. (1977) A congenital persistent swine fever infection. I. Clinical and virological observations. Veterinary Microbiology, 2, 121-132.
104. Vicente, J., Segales, J., Höfle, U., Balasch, M., Plana-Duran, J., Domingo, M. & Gortazar, C. (2004) Epidemiological study on porcine circovirus type 2 (PCV2) infection in the European wild boar (Sus scrofa). Veterinary Research, 35, 243-253.
105. Vicente, J., Ruiz-Fons, F., Vidal, D., Höfle, U., Acevedo, P., Villanua, D., Fernandez-de-Mera, I.G., Martin, M.P. & Gortazar, C. (2005) Serosurvey of Aujezsky's disease virus infection in the European wild boar in Spain. Veterinary Record, 156 (13), 408-412.
106. White, P.J., Trout, R.C., Moss, S.R., Desai, A., Armesto, M., Forrester, N.L., Gould, E.A. & Hudson, P.J. (2004) Epidemiology of rabbit haemorrhagic disease virus in the United Kingdom: Evidence for seasonal transmission by both virulent and avirulent modes of infection. Epidemiology and Infection, 132, 555-567.
107. Woodroffe, R., Donnelly, C.A., Cox, D.R., Bourne, F.J., Cheeseman, C.L., Delahay, R.J., Gettinby, G., McInerney, J.P. & Morrison, W.I. (2006) Effects of culling on badger Meles meles spatial organization: implications for the control of bovine tuberculosis. Journal of Applied Ecology, 43, 1-10.
108. Zanardi, G., Macchi, C., Sacchi, C. & Rutili, D. (2003) Classical swine fever in wild boar in the Lombardy region of Italy from 1997 to 2002. Veterinary Record, 152, 461-465.