F. Bacellar, J. Bawson, C. Silvera, and A. Filipe, Antibodies against Rickettsiaceae in dogs of Setúba Portugal, Cent Eur J Public Health, vol.3, pp.100-102, 1995.

J. Beaufils, H. Inokuma, J. Martin-granel, P. Jumelle, M. Barbault-jumelle et al., Anaplasma platys (Ehrlichia platys) infection in a dog in France: description of the case, and characterisation of the agent, Rev Med Vet, vol.153, pp.85-90, 2002.

C. Bekker, S. De-vos, A. Taoufik, O. Sparagano, and F. Jongejan, Simultaneous detection of Anaplasma and Ehrlichia species in ruminants and detection of Ehrlichia ruminantium in Amblyomma variegatum ticks by reverse line blot hybridization, Veterinary Microbiology, vol.89, issue.2-3, pp.223-238, 2002.
DOI : 10.1016/S0378-1135(02)00179-7

A. Bouattour, M. Darghouth, and A. Daoud, Distribution and ecology of ticks (Acari: Ixodidae) infesting livestock in Tunisia: an overview of eight years field collection, Parassitologia, vol.41, pp.5-10, 1999.

A. Bouattour, Clé dichotomique et identification des tiques (Acari: Ixodidae) parasites du bétail au Maghreb, Arch Inst Pasteur Tunis, vol.79, pp.43-50, 2002.

R. Bratsch and R. Greene, Post-Therapy Antibody Titers in Dogs With Ehrlichiosis: Follow-Up Study on 68 Patients Treated Primarily With Tetracycline and/or Doxycycline, Journal of Veterinary Internal Medicine, vol.32, issue.4, pp.271-274, 1996.
DOI : 10.1111/j.1939-1676.1996.tb02061.x

E. Breitschwerdt, B. Hegarty, and S. Hankock, Sequential evaluation of dogs naturally infected with Ehrlichia canis, Ehrlichia chaffeensis, Ehrlichia equi, Ehrlichia ewingii, or Bartonella vinsonii, J Clin Microbiol, vol.36, pp.2645-2651, 1998.

G. Brown, A. Martin, T. Roberts, and R. Aitken, Detection of Ehrlichia platys in dogs in Australia, Australian Veterinary Journal, vol.49, issue.8, pp.554-558, 2001.
DOI : 10.1016/S0035-9203(00)90243-8

D. Buonavoglia, S. Gravino, E. , D. Caprariis, D. Cerundolo et al., Serological evidence of Ehrlichia canis in dogs in southern Italy, New Microbiol, vol.18, pp.83-86, 1995.

C. Chabassol and C. Michel, Syndrome hemorragique thrombotique thrombocytopenique du chien en Tunisie: comparaison avec la pancytopenie canine tropicale récemment décrite au sud-Vietnam, 1972.

R. Cocco, G. Sanna, M. Cillara, S. Tola, L. Ximenes et al., Ehrlichiosis and Rickettsiosis in a Canine Population of Northern Sardinia, Annals of the New York Academy of Sciences, vol.9, issue.2, pp.126-156, 2003.
DOI : 10.1111/j.1749-6632.2003.tb07350.x

E. Codner and L. Farris-smith, Characterization of the subclinical phase of ehrlichiosis in dogs, J Am Vet Med Assoc, vol.189, pp.47-50, 1986.

C. Couto, It's a coagulopathy But couldn't it be ehrlichiosis ?, Proceedings of the fourth European FECAVA-SCIVAC Congress, pp.135-136, 1998.

J. De-la-fuente, A. Torina, V. Naranjo, S. Nicosia, A. Alongi et al., Molecular characterisation of Anaplasma platys strains from dogs in sicily, Italy, BMC Veterinary Research, vol.2, issue.1, pp.24-28, 2006.
DOI : 10.1186/1746-6148-2-24

A. Donatien and F. Lestoquard, Existence en Algérie d'une rickettsiose du chien, Bull Soc Path Exot, vol.6, pp.418-419, 1935.

J. Frank and E. Breitschwerdt, A Retrospective Study of Ehrlichiosis in 62 Dogs from North Carolina and Virginia, Journal of Veterinary Internal Medicine, vol.32, issue.3, pp.194-201, 1999.
DOI : 10.1111/j.1939-1676.1999.tb02178.x

T. French and J. Harvey, Serological diagnosis of infectious cyclic thrombocytopenia in dogs using an indirect fluorescent antibody test, Am J Vet Res, vol.44, pp.2407-2411, 1983.

A. Ghorbel, A. Clerc, and A. Djaiem, Ehrlichiose canine en Tunisie: enquête séro-épidemiologique, Rev Elev Méd Vét Pays Trop, vol.47, pp.271-275, 1994.

A. Ghorbel, B. H. Hessine, S. Haddad, S. Ghram, A. Chabchoub et al., Profils sérologique et hématologique de l'ehrlichiose canine et humaine dans les chenils de Tunis et Bizerte (Tunisie), Rev Med Vet, vol.151, pp.429-436, 2000.

A. Ghorbel, B. Ayed, M. Diwani, A. Ghram, A. Landoulsi et al., Incidence and seroprevalence of canine ehrlichiosis in the Medjez El Bab region (northwestern Tunisia during, Arch Inst Pasteur Tunis, vol.78, pp.41-47, 1994.

M. Groves, G. Dennis, H. Amyx, and D. Huxsoll, Transmission of Ehrlichia canis to dogs by ticks (Rhipicephalus sanguineus), 1975.

J. Gubbels, A. De-vos, M. Van-der-weide, J. Viseras, L. Schouls et al., Simultaneous detection of bovine Theileria and Babesia species by reverse line blot hybridization, J Clin Microbiol, vol.37, pp.1782-1789, 1999.

T. Hall, A user-friendly biological sequence alignment editor and analysis program for Windows 95/98/NT, Nucleic Acids Symp Ser, vol.41, pp.95-98, 1999.

S. Harrus, P. Kass, E. Klement, and T. Waner, Canine monocytic ehrlichiosis: a retrospective study of 100 cases, and an epidemiological investigation of prognostic indicators for the disease, Veterinary Record, vol.141, issue.14, pp.360-363, 1997.
DOI : 10.1136/vr.141.14.360

H. Inokuma, K. Ohno, T. Onishi, D. Raoult, and P. Brouqui, Detection of Ehrlichial Infection by PCR in Dogs from Yamaguchi and Okinawa Prefectures, Japan., Journal of Veterinary Medical Science, vol.63, issue.7, pp.815-817, 2001.
DOI : 10.1292/jvms.63.815

Z. Iqbal and Y. Rikihisa, Reisolation of Ehrlichia canis from blood and tissues of dogs after doxycycline treatment, J Clin Microbiol, vol.32, pp.1644-1649, 1994.

T. Keefe, C. Holland, P. Salyer, and M. Ristic, Distribution of Ehrlichia canis among military working dogs in the world and selected civilian dogs in the United States, J Am Vet Med Ass, vol.181, pp.236-238, 1982.

V. Kontos, O. Ppadopoulos, and T. French, Natural and Experimental Canine Infections With a Greek Strain of Ehrlichia platys, Veterinary Clinical Pathology, vol.16, issue.4, pp.101-105, 1991.
DOI : 10.1111/j.1939-165X.1991.tb00867.x

S. Kordick, E. Breitschwerdt, B. Hegarty, K. Southwick, C. Colitz et al., Coinfection with multiple tick-borne pathogens in a Walker Hound Kennel in North Calorina, J Clin Microbiol, vol.37, pp.2631-2638, 1999.

L. Manna, A. Alberti, L. Pavone, A. Scibelli, N. Staiano et al., First molecular characterization of a granulocytic Ehrlichia strain isolated from a dog in South Italy, The Veterinary Journal, vol.167, issue.3, pp.224-227, 2004.
DOI : 10.1016/j.tvjl.2004.02.008

R. Massung, K. Slater, J. Owens, W. Nicholson, T. Mather et al., Nested PCR assay for detection of granulocytic Ehrlichiae, J Clin Microbiol, vol.36, pp.1090-1095, 1998.

M. 'ghirbi, Y. Bouattour, and A. , Detection and molecular characterization of Babesia canis vogeli from naturally infected dogs and Rhipicephalus sanguineus ticks in Tunisia, Vet Parasitol, vol.152, pp.1-7, 2008.
URL : https://hal.archives-ouvertes.fr/pasteur-01375211

M. Mylonakis, A. Koutinas, G. Baneth, Z. Polizopoulou, and A. Fytianou, Mixed Ehrlichia canis, Hepatozoon canis, and presumptive Anaplasma phagocytophilum infection in a dog, Veterinary Clinical Pathology, vol.140, issue.4, pp.249-251, 2004.
DOI : 10.1016/0304-4017(95)00877-2

W. Nicholson, J. Comer, J. Sumner, G. Baker, C. Coughlin et al., An indirect immunofluorescence assay using a cell culture-derived antigen for detection of antibodies to the agent of human granulocytic ehrlichiosis, J Clin Microbiol, vol.35, pp.1510-1516, 1997.

P. Pancholi, C. Kolbert, P. Mitchel, K. Reed, J. Dumler et al., Ixodes dammini as a Potential Vector of Human Granulocytic Ehrlichiosis, Journal of Infectious Diseases, vol.172, issue.4, pp.1007-1012, 1995.
DOI : 10.1093/infdis/172.4.1007

P. Parola, H. Inokuma, J. Camicas, P. Brouqui, and D. Raoult, Detection and Identification of Spotted Fever Group Rickettsiae and Ehrlichiae in African Ticks, Emerging Infectious Diseases, vol.7, issue.6, pp.1014-1017, 2001.
DOI : 10.3201/eid0706.010616

P. Parola, R. Miller, P. Mcdaniel, S. Telford, J. Rolain et al., Emerging Rickettsioses of the Thai-Myanmar Border1, Emerging Infectious Diseases, vol.9, issue.5, pp.592-595, 2003.
DOI : 10.3201/eid0905.020511

N. Pusterla, J. Huder, C. Wolfensberger, B. Litschi, A. Parvis et al., Granulocytic ehrlichiosis in two dogs in Switzerland, J Clin Microbiol, vol.35, pp.2307-2309, 1997.

N. Pusterla, J. Pusterla, P. Deplazes, C. Wolfensberger, W. Müller et al., Seroprevalence of Ehrlichia canis and of Canine Granulocytic Ehrlichia infection in dogs in Switzerland, J Clin Microbiol, vol.36, pp.3460-3462, 1998.

N. Pusterla, C. Leutenegger, J. Huder, R. Weber, U. Braun et al., Evidence of the human granulocytic ehrlichiosis agent in Ixodes ricinus ticks in Switzerland, J Clin Microbiol, vol.37, pp.1332-1334, 1999.

M. Ristic and C. Holland, Canine ehrlichiosis Rïckettsial and chlamydial diseases of domestic animals, pp.169-186, 1993.

A. Sainz, M. Tesouro, F. Rodriguez, I. Mayoral, and F. Mazzucchelli, Seroprevalence of Ehrlichia canis infections in police dogs in Spain, Preventive Veterinary Medicine, vol.23, issue.3-4, pp.179-182, 1995.
DOI : 10.1016/0167-5877(94)00440-T

A. Sainz, S. Delgado, I. Amusategui, M. Tesouro, and P. Carmenes, Seroprevalence of canine ehrlichiosis in Castilla-Le??n (north-west Spain), Preventive Veterinary Medicine, vol.29, issue.1, pp.1-7, 1996.
DOI : 10.1016/S0167-5877(96)01060-4

A. Sainz, I. Amusategui, and M. Tesouro, Infection and Disease in Dogs in Spain, Journal of Veterinary Diagnostic Investigation, vol.130, issue.4, pp.382-384, 1999.
DOI : 10.1177/104063879901100419

M. Sarih, M. Ghirbi, Y. Bouattour, A. Gern, L. Baranton et al., Detection and Identification of Ehrlichia spp. in Ticks Collected in Tunisia and Morocco, Journal of Clinical Microbiology, vol.43, issue.3, pp.1127-1132, 2005.
DOI : 10.1128/JCM.43.3.1127-1132.2005

L. Schouls, I. Van-de-pol, S. Rijpkema, and C. Schot, Detection and identification of Ehrlichia, Borrelia burgdorferi sensu lato, and Bartonella species in Dutch Ixodes ricinus ticks, J Clin Microbiol, vol.37, pp.2215-2222, 1999.

L. Solano-gallego, M. Trotta, L. Razia, T. Furlanello, and M. Caldin, Molecular Survey of Ehrlichia canis and Anaplasma phagocytophilum from Blood of Dogs in Italy, Annals of the New York Academy of Sciences, vol.40, issue.1, pp.515-518, 2006.
DOI : 10.1086/322586

O. Sparagano, A. De-vos, B. Paoletti, C. Camma, P. De-santis et al., in Dogs Using Polymerase Chain Reaction and Reverse Line Blot Hybridization, Journal of Veterinary Diagnostic Investigation, vol.21, issue.6, pp.527-534, 2003.
DOI : 10.1177/104063870301500604

J. Thompson, D. Higgins, and T. Gibson, CLUSTAL W: improving the sensitivity of progressive multiple sequence alignment through sequence weighting, position-specific gap penalties and weight matrix choice, Nucleic Acids Research, vol.22, issue.22, pp.4673-4680, 1994.
DOI : 10.1093/nar/22.22.4673

A. Torina and S. Caracappa, Dog tick-borne diseases in Sicily, Parasitologia, vol.48, pp.145-147, 2006.

G. Troy, J. Vulgamott, and G. Turnwald, Canine ehrlichiosis: a retrospective study of 30 naturally occurring cases, J Am Anim Hosp Assoc, vol.16, pp.181-187, 1980.

A. Unver, Y. Rikihisa, K. Borku, Y. Ozkanlar, and B. Hanedan, Molecular detection and characterization of Ehrlichia canis from dogs in Turkey, Berl Munch Tierarztl Wochenschr, vol.118, pp.300-304, 2005.

C. Warner and J. Dawson, Genus and species-level identification of Ehrlichia species by PCR and sequencing Protocols for emerging infectious diseases, pp.100-105, 1996.

T. Waner and S. Harrus, Characterization of the subclinical phase of canine ehrlichiosis in experimentally infected beagle dogs, Veterinary Parasitology, vol.69, issue.3-4, pp.307-317, 1997.
DOI : 10.1016/S0304-4017(96)01130-2

T. Waner, S. Harrus, F. Jongejan, H. Bark, A. Keysary et al., Significance of serological testing for ehrlichial diseases in dogs with special emphasis on the diagnosis of canine monocytic ehrlichiosis caused by Ehrlichia canis, Veterinary Parasitology, vol.95, issue.1, pp.1-15, 2001.
DOI : 10.1016/S0304-4017(00)00407-6

B. Wen, Y. Rikihisa, J. Mott, P. Fuerst, M. Kawahara et al., Ehrlichia muris sp. nov., Identified on the Basis of 16S rRNA Base Sequences and Serological, Morphological, and Biological Characteristics, International Journal of Systematic Bacteriology, vol.45, issue.2, pp.250-254, 1995.
DOI : 10.1099/00207713-45-2-250

B. Wen, Y. Rikihisa, J. Mott, R. Greene, H. Kim et al., Comparison of nested PCR With immunofluorescent-antibody assay for detection of Ehrlichia canis infection in dogs treated with doxycycline, J Clin Microbiol, vol.35, pp.1852-1855, 1997.