African Horse Sickness - a Spreading concern

Copyright (c) 2008 The Naturally HealthySigns include fever in the first few days of
Introduction: African horse sickness is a potentiallyinfection, appetite loss (anorexia), mild cough, and
fatal, untreatable illness of equines, and cases areconjunctivitis
being found further north with global warming. If aCurrent Western Treatments: It is fundamentally
case of this notifiable disease were to be found inimportant to seek the urgent opinion of your
the UK, we may find a foot and mouth-typeveterinarian. No active treatment is currently
slaughter situation occurring among our equines.possible, and in the European Union all affected
Read below for more information!animals will be compulsorily slaughtered. In other
Aetiology: Midges carry the orbivirus pathogen ofareas of the world, supportive nursing care may
African horse sickness. It is endemic in horses,help. A further possibility is vaccination - 9
mules and donkeys of sub-Saharan Africa. Zebrassubtypes have been isolated, each has its own
appear to be relatively unaffected. Elephantsvaccine; two injections are needed & the effect is
appear to carry the illness subclinically, and dogsrelatively short-lived.
can be severely affected, usually from eatingLimiting Outbreaks: It is possible that the virus
infected meat.spends part of the year in Africa in subclinically
Clinical Signs: This disease has several subtypes:affected, unrecognised hosts, while the midges
Acute Pulmonary Type: This is characterised byare inactive. This may be the reason why, to
fever (temperature >40.5°C, sweating, anddate, outbreaks in Spain have been short-lived.
severe respiratory signs - coughing, labouredSuch outbreaks may have been from importing
breathing, yellow frothy nasal discharge. Thereinfected zebras.
may also be congested mucous membranes, andHorses imported into the European Union are
collapse and death can occur within a few hours.routinely tested for African horse sickness. EU
There is a 95% mortality, but survivors haveCouncil Directive 92/35 provides for compulsory
severe respiratory distress for several weeks.notification of cases, and the setting up of a
Subacute Cardiac Form: In this form the heart isprotection zone of least 100 kilometres radius
more greatly affected. Signs include pericardialaround any infected premises, to remain in force
effusion (fluid between the muscle and outerfor at least 12 months.
covering of the heart), pleural effusion (fluid inComplementary Therapies: This is a notifiable
lungs, due to heart failure), endocarditisdisease in the United Kingdom. Many
(inflammation in the inner layer of heart muscle,complementary therapies such as healing, Reiki
the endocardium), swelling of head, neck & chestand massage will help with supportive nursing care
(oedema, due to heart failure), and cyanosis (bluein cases likely to recover (and in countries where
colour due to lack of oxygen in the blood) ofthe animals will not be put down). Reiki and
mucous membranes. petechiae (red specks ofspiritual healing can be extremely useful for both
blood where it is leaving the smallest bloodanimal and owner when the former has to be put
vessels) may be evident on the mouth and underdown.
the tongue. Fever tends to be intermittent, andConclusion: This devastating illness is too infectious
there is a 60% mortality, from heart failure.for affected animals to be allowed to survive. It
Mixed form: In this there is a cCombination ofmay spread North from Africa with global
respiratory followed by cardiac symptoms, andwarming, and a few cases have been seen in
the incubation period is 3-7 daysSpain. In the UK, if a case was to be found, the
Chronic febrile type: This is less severe - oftenmanagement is likely to be similar to that of Foot
subclinical, rarely found in horses as they are soand Mouth Disease.
susceptible, more often in donkeys and mules.