1. Infectious Disease Topic- Actinomycosis
Figure 1. VD thoracic radiograph of consolidated lung lobe secondary to actinomycosis.
Topic- Anaerobic Infections
Figure 1. Test tube of effusive fluid removed from the
thorax of a dog with pyothorax.
Topic- Aspergillosis – Disseminated
Figure 1. Skull radiograph showing aspergillosis of the nasal turbinates.
Figure 2. Mucopurulent discharge in a dog with nasal aspergillosis.
Topic- Bartonellosis
Figure 1. Typical cat scratch disease in a child.
Figure 2. Typical cat scratch disease in a child.
Figure 3. Parinaud’s oculoglandular syndrome in
“atypical cat scratch disease.”
Figure 4. Parinaud’s oculoglandular syndrome in
“atypical cat scratch disease”—submandibular
lymphadenopathy.
Figure 5. Multiple lesions of bacillary angiomatosis on the elbow of a man with AIDS.
Figure 6. Warthin-Starry silver stained tissue from lesion of bacillary angiomatosis.
Figure 7. Typical heterogeneous appearance of
Bartonella helnselae isolated from clinical specimen on blood agar.
Topic- Blastomycosis
Figure 1. Ulcerative lesion of the toe.
Topic- Brucellosis
Figure 1. Testes of a chronically infected male dog with brucellosis.
Figure 2. Histopathology of prostatic granuloma in a B. –canis–infected male dog.
Topic- Canine Distemper
Figure 1. Pathogenesis of canine distemper. (Dr.
Carmichael).
Figure 2. Canine distemper viral antigen in blood
lymphocytes stained with fluorescent antibody.
Topic- Chagas Disease (American Trypanosomiasis)
Figure 1. Photomicrograph of T. cruzi in blood film from an infected dog.

2. Infectious Disease Figure 2. Photomicrograph of histologic section of
left ventricle from a dog with chronic myocarditis and
Trypanosomiasis
Figure 3. Photomicrograph showing T. cruzi pseudocyst in myocyte of a dog’s heart with trypanosomiasis.”
Topic- Cryptococcosis
Figure 1. Image of a cat’s nose infected with
Cryptococcosus. Note the excoriation and ulceration
over the nose from which the organism was easily
isolated.
Figure 2. Cytology smear taken from a submandibular lymph node of a cat with cryptococcosis. Note the thick-walled yeast-like organisms surrounded by a lightstaining halo (mucopolysacharide capsule). Diff Quick stain.
Topic- Ehrlichiosis
Figure 1. Photomicrograph of blood smear showing
mononuclear leukocyte containing E. canis morula in
cytoplasm.
Figure 2. Photomicrograph of blood smear showing
mononuclear cell in bone marrow E. canis morula in
Figure 3. Photomicrograph of blood smear from a
dog showing neutrophil containing E. equi morula in
cytoplasm.
Figure 4. Photomicrograph of blood smear from a
dog showing platelets containing E. platys morula in
Figure 5. Photomicrograph of well-fed and underfed
rhipicephalus sanguineus ticks from a dog with
ehrlichiosis.
Topic- Herpesvirus Infection – Dogs
Figure 1. Gross lesions observed in canine herpes virus.
Figure 2. In utero infections caused by canine herpes virus.
Topic- Histoplasmosis
Figure 1. Tracheobronchial lymph node enlargement.
Topic- Hookworms (Ancylostomiasis)
Figure 1. Hookworm egg.
Figure 2. Ancyclostoma caninum mouth.

3. Infectious Disease Topic- Leishmaniasis
Figure 1. Photograph of a hock of Leishmania-infected dog. Note the ulcerated skin lesions.
Figure 2. Bone marrow smear (Wright stain) from
a dog with leishmaniasis. Note the cytoplasm of a
machrophage containing multiple organisms with a
dark-staining kinetoplast and larger, lighter staining
nucleus.
Topic- Lyme Borreliosis
Figure 1. Adult female Ixodes ticks, main vector for
Borrelia burgdorferi sensu lato organisms
Figure 2. Spirochetes, causative agents of Lyme
Borreliosis
Figure 3. Chronic synovitis in a dog with Lyme
Topic- Neosporosis
Figure 1. Puppy with progressive hind leg paresis owing to neosporosis.
Figure 2. Dog’s brain showing the cerebellar fossa. Note the absence of a well-formed cerebellum as a result of Neospora infection in utero.
Topic- Physalopterosis
Figure 1. Physaloptera eggs.
Topic- Rocky Mountain Spotted Fever
Figure 1. Necrosis of planum nasale of a dog with
Rocky Mountain spotted fever.
Figure 2. Retinal hemorrhage on fundus of a dog with Rocky Mountain spotted fever.
Topic- Roundworms (Ascariasis)
Figure 1. Toxacara egg.
Figure 2. Toxascaris egg.
Topic- Strongyloidiasis
Figure 1. Strongyloides larva
Topic-Tapeworms (Cestodiasis)
Figure 1. Taenia egg.

4. Infectious Disease Topic- Toxoplasmosis
Figure 1. Photomicrograph of cytology of peritoneal tap from a cat with toxoplasmosis.
Figure 2. Photomicrograph of histologic sections of a
cat’s brain with toxoplasmosis.
Figure 3. Photomicrograph of histologic sections of a
Figure 4. Photomicrograph of toxoplasma gondii cyst
containing bradyzoites in cat’s brain.
Topic- Whipworms (Trichuriasis)
Figure 1. Trichuris vulpis egg.
Figure 2. Trichuris vulpis adults.

5. Infectious Disease Topic- Actinomycosis
Figure 1. VD thoracic radiograph of consolidated lung
lobe secondary to actinomycosis.

6. Infectious Disease Topic-Anaerobic Infections
Figure 1. Test tube of effusive fluid removed from the thorax
of a dog with pyothorax.

7. Infectious Disease Topic-Aspergillosis - Disseminated
Figure 1. Skull radiograph showing aspergillosis of the nasal turbinates.

8. Infectious Disease Topic-Aspergillosis - Disseminated
Figure 2. Mucopurulent discharge in a dog with nasal aspergillosis.

9. Infectious Disease Topic-Bartonellosis
Figure 1. Typical cat scratch disease in a child.

10. Infectious Disease Topic-Bartonellosis
Figure 2. Typical cat scratch disease in a child.

11. Infectious Disease Topic-Bartonellosis
Figure 3. Parinaud’s oculoglandular syndrome in
“atypical cat Scratch disease.”

12. Infectious Disease Topic-Bartonellosis
Figure 4. Parinaud’s oculoglandular syndrome in “atypical cat
Scratch disease”—submandibular lymphadenopathy.

13. Infectious Disease Topic- Bartonellosis
Figure 5. Multiple lesions of bacillary angiomatosis on
the elbow of a man with AIDS.

14. Infectious Disease Topic- Bartonellosis
Figure 6. Warthin-Starry silver stained tissue from lesion of bacillary
angiomatosis.

15. Infectious Disease Topic- Bartonellosis
Figure 7. Typical heterogeneous appearance of Bartonella helnselae
isolated from clinical specimen on blood agar.

16. Infectious Disease Topic-Blastomycosis
Figure 1. Ulcerative lesion of the toe.

17. Infectious Disease Topic-Brucellosis
Figure 1. Testes of a chronically infected male dog with brucellosis.

18. Infectious Disease Topic-Brucellosis
Figure 2. Histopathology of prostatic granuloma in a B. –canis–infected
male dog.

19. Infectious Disease Topic-Canine Distemper
Figure 1. Pathogenesis of canine distemper. (Dr. Carmichael).

20. Infectious Disease Topic-Canine Distemper
Figure 2. Canine distemper viral antigen inblood
lymphocytes stained with fluorescent antibody.

21. Infectious Disease Topic-Chagas Disease (American Trypanosomiasis)
Figure 1. Photomicrograph of T. cruzi in blood film from an infected dog.

22. Infectious Disease Topic-Chagas Disease (American Trypanosomiasis)
Figure 2. Photomicrograph of histologic section of left ventricle from a dog
with chronic myocarditis and trypanosomiasis

23. Infectious Disease Topic- Chagas Disease (American Trypanosomiasis)
Figure 3. Photomicrograph showing T. cruzi pseudocyst in myocyte of a
dog’s heart with trypanosomiasis.”

24. Infectious Disease Topic- Cryptococcosis
Figure 1. Image of a cat’s nose infected with Cryptococcosus. Note the excoriation
and ulceration over the nose from which the organism was easily isolated.

25. Infectious Disease Topic- Cryptococcosis
Figure 2. Cytology smear taken from a submandibular lymph node of a cat
with cryptococcosis. Note the thick-walled yeast-like organisms surrounded
by a light-staining halo (mucopolysacharide capsule). Diff Quick stain.

26. Infectious Disease Topic- Ehrlichiosis
Figure 1. Photomicrograph of blood smear showing mononuclear leukocyte
containing E. canis morula in cytoplasm.

27. Infectious Disease Topic- Ehrlichiosis
Figure 2. Photomicrograph of blood smear showing mononuclear cell in
bone marrow E. canis morula in cytoplasm.

28. Infectious Disease Topic- Ehrlichiosis
Figure 3. Photomicrograph of blood smear from a dog showing neutrophil
containing E. equi morula in cytoplasm.

29. Infectious Disease Topic- Ehrlichiosis
Figure 4. Photomicrograph of blood smear from a dog showing platelets
containing E. platys morula in cytoplasm.

30. Infectious Disease Topic- Ehrlichiosis
Figure 5. Photomicrograph of well-fed and underfed rhipicephalus
sanguineus ticks from a dog with ehrlichiosis.

31. Infectious Disease Topic- Herpesvirus Infection - Dogs
Figure 1. Gross lesions observed in canine herpes virus.

32. Infectious Disease Topic-Herpesvirus Infection - Dogs
Figure 2. In utero infections caused by canine herpes virus.

33. Infectious Disease Topic- Histoplasmosis
Figure 1. Tracheobronchial lymph node enlargement.

34. Infectious Disease Topic- Hookworms (Ancylostomiasis)
Figure 1. Hookworm egg.

35. Infectious Disease Topic- Hookworms (Ancylostomiasis)
Figure 2. Ancyclostoma caninum mouth.

36. Infectious Disease Topic- Leishmaniasis
Figure 1. Photograph of a hock of Leishmania-infected 3
dog. Note the ulcerated skin lesions.

37. Infectious Disease Topic- Leishmaniasis
Figure 2. Bone marrow smear (Wright stain) from a dog with leishmaniasis.
Note the cytoplasm of a machrophage containing multiple organisms with a
dark-staining kinetoplast and larger, lighter staining nucleus.

38. Infectious Disease Topic-Lyme Borreliosis
Figure 1. Adult female Ixodes ticks, main vector for Borrelia burgdorferi
sensu lato organisms

39. Infectious Disease Topic- Lyme Borreliosis
Figure 2. Spirochetes, causative agents of Lyme borreliosis

40. Infectious Disease Topic- Lyme Borreliosis
Figure 3. Chronic synovitis in a dog with Lyme borreliosis.

41. Infectious Disease Topic-Neosporosis
Figure 1. Puppy with progressive hind leg paresis owing to neosporosis.

42. Infectious Disease Topic-Neosporosis
Figure 2. Dog’s brain showing the cerebellar fossa. Note the absence of a
well-formed cerebellum as a result of Neospora infection in utero.

43. Infectious Disease
Topic-Physalopterosis
Figure 1. Physaloptera eggs.

44. Infectious Disease Topic- Rocky Mountain Spotted Fever
Figure 1. Necrosis of planum nasale of a dog with Rocky Mountain spotted fever.

45. Infectious Disease Topic- Rocky Mountain Spotted Fever
Figure 2. Retinal hemorrhage on fundus of a dog with Rocky Mountain
spotted fever.

46. Infectious Disease Topic- Roundworms (Ascariasis)
Figure 1. Toxacara egg.

47. Infectious Disease Topic- Roundworms (Ascariasis)
Figure 2. Toxascaris egg.

48. Infectious Disease Topic-Strongyloidiasis
Figure 1. Strongyloides larva.

49. Infectious Disease
Topic-Tapeworms (Cestodiasis)
Figure 1. Taenia egg.

50. Infectious Disease Topic-Toxoplasmosis
Figure 1. Photomicrograph of cytology of peritoneal tap from a cat with
toxoplasmosis.

51. Infectious Disease Topic-Toxoplasmosis
Figure 2. Photomicrograph of histologic sections of a cat’s
brain with toxoplasmosis.

52. Infectious Disease Topic-Toxoplasmosis
Figure 3. Photomicrograph of histologic sections of a cat’s brain with
toxoplasmosis.

53. Infectious Disease Topic-Toxoplasmosis
Figure 4. Photomicrograph of toxoplasma gondii cyst containing
bradyzoites in cat’s brain.

54. Infectious Disease Topic- Whipworms (Trichuriasis)
Figure 1. Trichuris vulpis egg.

55. Infectious Disease Topic-Whipworms (Trichuriasis)
Figure 2. Trichuris vulpis adults.