|
|
(One intermediate revision by the same user not shown) |
Line 1: |
Line 1: |
− | <big>
| + | #REDIRECT[[:Category:Piroplasmida]] |
− | | |
− | '''[[Babesia|''Babesia'']]
| |
− | | |
− | '''[[Cytauxzoon|''Cytauxzoon felis'']]
| |
− | | |
− | | |
− | ==''Theileria''==
| |
− | [[Image:Theileria parva life cycle.jpg|thumb|right|150px|''Theileria parva'' Life Cycle Diagram - Dennis Jacobs & Mark Fox RVC]]
| |
− | [[Image:Lymph node smear East Coast Fever.jpg|thumb|right|150px|Lymph node smear of a cow with East Coast Fever - Drs. Elizabeth Howerth and Bruce LeRoy, Department of Pathology, UGA College of Veterinary Medicine]] | |
− | [[Image:H and E stain brain East Coast Fever.jpg|thumb|right|150px|H and E stain of brain and meningal vessels of a cow with East Coast Fever - Drs. Elizabeth Howerth and Bruce LeRoy, Department of Pathology, UGA College of Veterinary Medicine]]
| |
− | [[Image:Theileria cervi.jpg|thumb|right|150px|''Theileria cervi'' (deer) - Drs. Elizabeth Howerth and Bruce LeRoy, Department of Pathology, UGA College of Veterinary Medicine]]
| |
− | *Main species of veterinary importance is ''Theileria parva''
| |
− | **Causes '''East Coast Fever'''
| |
− | ***Severe, proliferative lymphatic disease of cattle
| |
− | ***Central and Eastern Africa
| |
− | ***Transmitted by [[Hard Ticks - Overseas|''Rhipicephalus appendiculatus'']]
| |
− | ***[[Ticks#Disease Transmission|Trans-stadial]] transmission
| |
− | | |
− | *Other ''Theileria'' species cause production losses in cattle and sheep in the Middle East, Mediterranean and in Northern Africa
| |
− | | |
− | '''Life Cycle'''
| |
− | *Incubation phase lasts 1 week
| |
− | | |
− | *Lymphoblast proliferation
| |
− | **Local [[Lymph Nodes - Anatomy & Physiology|lymph node]] first infected then spreads through body
| |
− | **Occurs in week two
| |
− | | |
− | *Lymphoid depletion
| |
− | **[[Lymphocytes - WikiBlood|Lymphocytes]] killed
| |
− | **Decreases lymphopoiesis
| |
− | **Occurs in week 3
| |
− | | |
− | *Total incubation period takes about 18 days
| |
− | | |
− | '''Diagnosis'''
| |
− | *Clinical signs
| |
− | **Pyrexia
| |
− | **Enlarged local [[Lymph Nodes - Anatomy & Physiology|lymph node]]
| |
− | ***Usually parotid [[Lymph Nodes - Anatomy & Physiology|lymph node]] as [[Hard Ticks - Overseas|''Rhipicephalus appendiculatus'']] feeds in the ear
| |
− | **Loss of condition
| |
− | | |
− | *Examine Giemsa stained smears of:
| |
− | **Local [[Lymph Nodes - Anatomy & Physiology|lymph node]] aspirated for schizonts
| |
− | **Blood smears for piroplasms in red blood cells
| |
− | | |
− | *Post-mortem
| |
− | **Pulmonary oedema
| |
− | **Gut mucosal haemorrhages
| |
− | **[[Lymph Nodes - Anatomy & Physiology|Lymph node]] and [[Spleen - Anatomy & Physiology|splenic]] cellular atrophy
| |
− | | |
− | '''Control'''
| |
− | *Integrated control of both the [[Tick Control|tick vector]] and disease
| |
− | **[[Vaccines - WikiBlood|Vaccination]] and [[Ectoparasiticides]]
| |
− | | |
− | *Current [[Vaccines - WikiBlood|vaccination]] is live unattentuated
| |
− | **Contains frozen stabilate of ground up tick gut containing infective sporozoites
| |
− | **Long lasting oxytetracycline administered at the same time to slow down schizogony giving the immune response time to develop
| |
− | | |
− | ==[[Protozoa Flashcards - Wikibugs#Piroplasmida|Piroplasmida Flashcards]]==
| |