Three-Day Sickness is an acute contagious viral disease that affects cattle. It is transmitted by blood-sucking insects such as mosquitoes (Anopheles and Culex). The disease has a short duration in animals and is characterized by fever, lameness, stiffness of the limbs, and weakness of the affected animal. The disease spreads rapidly, while the mortality rate is low, and infection usually ends with the animal’s recovery.
High milk-yielding animals and fattened breeding bulls. Infection in bulls may lead to temporary infertility in some cases.