Trial for Using Emergency Vaccination for Controlling Duck Virus Hepatitis (DVH) Outbreaks in Ducks

Humoral immune responsiveness in duck hepatitis B virus-infected ducks.

Immunofluorescence assays with fixed tissue sections were used to characterize antibody reactivity in sera obtained from duck hepatitis B virus-infected ducks. Under conditions of experimental infection, antibody to core antigen but not to surface antigen was detectable. A majority of the ducks infected at 8 days after hatching and a minority of those infected at 1 day after hatching showed a t...

Hepatitis B Virus Vaccination in Hemodialysis Patients: A Necessity for Individualizing of Immunization?

Duck Virus Hepatitis

Hepatitis in ducks can be caused by at least three different viruses. The more common and 4 internationally widespread is duck hepatitis virus (DHV) type I, a member of the Picornaviridae in 5 the proposed new genus Avihepatovirus [now designated as an unclassified picornavirus], which causes 6 a highly lethal, acute, contagious infection in ducklings under 6 weeks of age and, frequently, under...

Virologic and Immunologic Characteristics in Mature Ducks with Acute Duck Hepatitis A Virus 1 Infection

Duck hepatitis A virus 1 (DHAV-1) infection in mature ducks has previously been proposed as a small-animal model for human hepatitis A. However, basic research on the outcome of DHAV-1 infection in mature ducks is limited. Here, we examined the course of viremia, the characteristics of antibody responses, and the profiles of plasma cytokines in mature ducks infected with DHAV-1. During the cour...

Liver disease associated with duck hepatitis B virus infection of domestic ducks.

The liver disease associated with duck hepatitis B viremia was investigated in naturally infected ducks from Chi-tung county in China and in both naturally and experimentally infected ducks from the United States. Liver and serum specimens of adult Chinese ducks were examined for duck hepatitis B virus (DHBV) DNA by dot and gel blot hybridization. DHBV was found in serum and (in episomal form o...