Korean haemorrhagic fever is caused by Hantaan virus, and was first noted during the Korean war in the 1950s. The virus is found in field rodents and voles as well as laboratory rats, and it is spread in an unknown manner.
After an incubation period of seven to thirty five days, about two thirds of patients have a mild illness. The remaining third suffer a severe illness characterised by haemorrhage, shock, renal failure and pulmonary oedema.
Last reviewed 05/2021