|[Image: Jerry Friedman]|
Again, Hepatitis viruses seem to infect ever more species than previously thought. More species and more different viruses mean more potential mixing vessels for these viruses. Who knows where the next mutated version lurks. It could start infecting humans right at this very moment.
 Shi et al: A novel isolate of duck hepatitis B virus. Submitted to the EMBL/GenBank/DDBJ databases on December 1992
 Guo et al: Identification and characterization of avihepadnaviruses isolated from exotic anseriformes maintained in captivity in Journal of Virology - 2005