المحاظرة الثالثة / معدية / دكتور اسعد /shipping fever
TRANSCRIPT
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coaxed
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EQUINE
INFLUENZA
SHIPPING FEVER
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Highly contagious viral
respiratory disease of horse
characterized by fever and
sever persistent cough
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Equine influenza is associated with
infection by equine influenza A/H7N7
or equine influenza A/H3N8
(previously referred to as equine
influenza A2) virus, members of the
influenza virus A genus of the family
Orthomyxoviridae.
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EPIDEMIOLOGY
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Epidemics of equine influenza have
occurred in Europe or North America in
1956 (H7N7), 1963 (H3N8), 1969,
1979, and 1989, the spread of equine
influenza viruses, as exemplified by the
2003 outbreak of equine influenza in
horses in South Africa associated with
a virus from North America and
outbreak was occur in Iraq during 1985.
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Sourse of infection
1)droplet infection
2)contaminated food and water
3)semen from infected stallion
The virus stay in semen in 1-6 year
Transmition
*Inhalation of droplet by direct contact
*Ingestion contaminated food and water
*Breeding
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Clinical
finding
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The disease is start with fever usually 38.5-41c
after incubation period 2-3days .
the most important clinical signs is dry
hacking cough which become moist later ,
there is depression anorexia, anoxia
,stiffness, and immobility .
Infection of eye will cause photophobia and
lacrimation .,congestion of conjunctiva
,purulent lacrimation discharge and
cloudiness of cornea
Duration of disease 3-8 days .
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Complication When working horses exposed to
cold whether there is sever cough and
bronchitis , pneumonia , edema of
lung , guttural pouch and chronic
pharyngitis .
Young foals may develop sever
bronchopneoumonia ,high fever
dyspnea and deaeth.
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D. Diagnosis
As in strangles
Diagnosis
1-characterstic of the disease
2-viral isolation in early stage in chick Embryo using
deep nasal or pharyngeal swab .
3-serology
a-pained serum sample b-serum neutralization
test
c-CFT d-ELISA
4-Now test rapid test by using nasopharyngeal
smear indirect immunoflorecent
5-necropsy finding. Bronchopneumonia and
discharge
6-Heamatology : leukopenia
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TreatmentThere is no specific treatment
but administration of hyperimmunserum
For prophylactic specially for
young horses and give large
dose of broad spectrum
antibiotic or combination
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1- Amantadine, Rimantidine (30 mg/kg PO
q 12 hour)
2-Antibiotic treatment should be treated with
broad-spectrum antibiotics, such as
potentiated sulfonamides (15-30 mg/kg, PO,
1M, or IV, every 12 h), ceftiofur (2.2 mg/kg,
1M, every 12 h.
3-Supportive treatment includes rest,
provision of a dust-free environment and, on
occasion, administration of nonsteroidal
anti-inflammatory drugs