The virus is transmitted by infected mosquitoes and by direct contact with the blood or body fluids of infected animals. Patients who become ill usually experience an influenza-like illness, with sudden onset of fever, headache, muscle pain and backache. Some patients might have neck stiffness, discomfort when looking at bright lights, drowsiness and vomiting.
Patients usually recover within two days to one week after onset of the illness.
No effective medication or vaccine is available. In view of the outbreak of RVF in Saudi Arabia and Yemen, the public is advised to avoid travel to Saudi Arabia and Yemen for the time being. Travellers should also avoid contact with livestock. The Ministry of Health advises all returning travellers from Saudi Arabia and Yemen to look out for signs and symptoms of the disease and to seek immediate medical attention if they are ill.