Illustration of hantavirus attacking a human cell; featuring a cutaway view showing the virion's interior, with three individually encapsulated strands of RNA. The virus replicates in the endoplasmic reticulum and Golgi bodies of the host cell. Humans may be infected by coming in contact with urine or other rodent waste. Hemorrhagic fever with renal syndrome (HFRS) and hantavirus pulmonary syndrome (HPS) are potentially fatal diseases caused by hantavirus. Here ther virus is shown entering a cell by the process of endocytosis.