**Semliki fever** **(Semliki forest fever)**, also known as Fever-like disease or epidemic nephrotropical disease - an acute infectious disease from the group of tropical fevers, caused by the arboviral antigen of the same name, group A. Endemicity is characteristic of Africa and some areas South-East Asia. The origin of the name is due to the fact that the disease was first diagnosed in some areas of northern Nigeria.
For the first time, infection with a group A virus was shown only 2 years after the outbreak of the disease. Repeated studies have revealed the disease in many regions of the country. Similar outbreaks later occurred in neighboring Caribbean countries and West Africa. The new fever came from West African countries to the USSR through cases of the disease among foreign tourists and volunteers. Currently, the disease is widespread in Central, Eastern and
Semliki fever is one of the most famous and dangerous vector-borne infections in the world. The causative agent of the disease, known as the LSA-IVF virus (Loess-Semliki-A fever), is an arbovirus and belongs to group B viral diseases in its family. It is now known as a disease with many names, including tropical hemorrhagic fever, Stanley Island virus infection, or Semlik fever. Loess Semliki fever disease occurs in people with an increase in body temperature, accompanied by disturbances in the functioning of the cardiovascular and nervous systems. It is noteworthy that transmission of the pathogen occurs only through the bite of the vector - a mosquito.