Changes

==Clinical Signs==

==Clinical Signs==

'''Abortions''' occurring in huge '''storms''' with '''high mortality''' in both neonates and adults are characteristic of disease.  Agalactia may develop.

'''Abortions''' occurring in huge '''storms''' with '''high mortality''' in both neonates and adults are characteristic of disease.  Agalactia may also develop.

'''[[Vomiting]] and [[Diarrhoea | diarrhoea]]''', with melaena, haematochezia, colic, anorexia and anorexia.

'''[[Vomiting]] and [[Diarrhoea | diarrhoea]]'''may involve melaena and haematochezia.

'''Tachycardia, cyanosis''', petechiation, haemorrhage and clotting defects.

'''Tachycardia, cyanosis''', petechiation, haemorrhage and clotting defects are haematological consequences of RVF.

Purulent nasal discharge, epistaxis, tachypnoea and dyspnoea.

The respiratory disease of RVF is non-specific: Purulent nasal discharge, epistaxis, tachypnoea and dyspnoea.

Fever, lymphadenopathy, depression and lethargy.

Fever, lymphadenopathy, depression and lethargy usually accompany infection.

Hepatitis may cause consequent photosensitisation.  

Hepatitis may cause consequent photosensitisation.  

In young animals, '''peracute disease''' caused anorexia, listlessness, collapse and death.

In young animals, '''peracute disease''' causes anorexia, listlessness, collapse and death.

Humans develop '''malarial-like''' disease. High risk individuals include farmers, veterinarians and abattoir staff. Mild disease is most common but severe hepatitis, encephalitis and ocular damage can develop. The usual presentation is of sudden onset fever, myalgia, biphasic behaviour and gastrointestinal disease.

Humans develop '''malarial-like''' disease. High risk individuals include farmers, veterinarians and abattoir staff. Mild disease is most common but severe hepatitis, encephalitis and ocular damage can develop. The usual presentation is of sudden onset fever, myalgia, biphasic behaviour and gastrointestinal disease.