Etiology: Hantaan virus is an enveloped DNA virus of the family Bunyaviridae.
Incidence: Incidence of infection is rare in laboratory rats.
Transmission: Transmission occurs by aerosol, contact with infected urine or feces or direct contact with the infected animal.
Clinical Signs: Rats do not display clinical signs when infected with Hantaan virus.
Diagnosis: Diagnosis is made using serology (MFI, IFA) or PCR.
Public Health Significance: Hantaan virus is zoonotic and can cause severe illness in humans.