Abstract: Disclosed herein are methods and compositions for detecting the presence in a sample of a US-type or a US-subtype hepatitis E virus, including naturally occurring variants thereof. In particular, the invention provides nucleic acid sequences corresponding to the genome of the US-type or US-subtype hepatitis E virus, amino acid sequences, including epitope sequences, encoded by the genomes of such viruses, and antibodies that bind specifically to such amino acid sequences. The invention further provides methods and compositions for immunizing individuals against infection by, or for treating individuals already infected with such a virus.

Abstract: The present invention relates to nucleic oligomer primers or probes useful for detection of TTV in test samples. Also provided are assays which utilize these primers and probes, as well as test kits which contain these oligomer primers and/or. In addition, the present invention encompasses the use of TTV nucleotide sequences as nucleic acid vectors and as markers for determining transmission between individuals as well as the route thereof. Additionally, the present invention invention encompasses a method of detecting TTV infection prior to xenotransplantation of a tissue or organ.

Abstract: HGBV-C oligonucleotides from the 5' end of HGBV-C useful for the detection and genotyping of HGBV-C isolates. Also provided are assays which utilize these oligonucleotides.