The present invention relates to an antiviral drug comprising as an active ingredient a substance capable of suppressing an expression of a target gene or an activity of a protein encoded by said target gene, wherein said target gene is one or more genes having an action of retaining virus-derived nucleic acid in a host cell and selected from the group consisting of DOCK11 gene, LIPG gene, DENND2A gene, and HECW2 gene. The present invention also relates to a screening method for the antiviral drug.

Disclosed are methods of diagnosis of a pathogen-associated disease. These methods comprise: providing a biological sample from a human subject; determining presence, absence and/or quantity of a bacterial pathogen, a viral pathogen, or a combination thereof, by a pathogen culture, a serum antibody detection test, a pathogen antigen detection test, a pathogen DNA and/or RNA detection test, or a combination thereof; determining in the sample, expression levels of at least one endogenous gene in which aberrant expression levels are associated with infection with a pathogen, by a microarray hybridization assay, RNA-seq assay, polymerase chain reaction assay, a LAMP assay, a ligase chain reaction assay, a Southern, Northern, or Western blot assay, an ELISA or a combination thereof. The subject can be diagnosed with the disease if the subject comprises the pathogen and an aberrant level of expression of an endogenous gene.

A method for evaluating a biological material for unassociated virus-size particles having a particular epitope uses a fluorescent antibody stain specific for binding with the epitope and a fluid sample with the virus-size particles and fluorescent antibody stain is subjected to flow cytometry with identification of fluorescent emission detection events indicative of passage through a flow cell of a flow cytometer of unassociated labeled particles of virus size including such a virus-size particle and fluorescent antibody stain.

The invention relates to isolated recombinant analogues of flavivirus E-proteins comprising an analogue of a flavivirus E-protein fusion loop, wherein the analogue of the flavivirus E-protein fusion loop comprises at least one glycosylation site for an N-linked glycan that is not present in a natural flavivirus E-protein fusion loop sequence, wherein the at least one glycosylation site is an N-linked glycosylation sequon (Asn-X-Ser/Thr) and the Asn (N) residue of the sequon occupies any of positions 98-110 (DRGWGNGCGLFGK) of the natural flavivirus E-protein fusion loop amino acid sequence, wherein X is any amino acid residue except proline and Ser/Thr denotes a serine or threonine residue for use in an in vitro method for specific detection of anti-flavivirus antibody, diagnosis of flavivirus infection and/or to investigate exposure to flavivirus.

Disclosed are compositions and methods for the use of lipoplex nanoparticle chips and arrays in the detection of/diagnosis of a disease or condition.

Multimeric binding molecules that are capable of specifically binding to hemagglutinin (HA) of at least two influenza A virus strains, said strains comprising HA of two different HA subtypes from phylogenetic group 2; or capable of specifically binding to hemagglutinin (HA) of at least one influenza A virus strain from phylogenetic group 1 and at least one influenza A virus strain from phylogenetic group 2; or capable of specifically binding to hemagglutinin (HA) of at least one influenza B virus strain are provided. The binding molecules preferably are also capable of neutralizing at least two influenza A virus strains from phylogenetic group 2; or capable of neutralizing at least one influenza A virus strain from phylogenetic group 1 and at least one influenza A virus strain from phylogenetic group 2; or capable of specifically neutralizing at least one influenza B virus strain.

Provided are a broad-spectrum monoclonal anti-Flu B antibody, cell strains generating the antibody, and a composition comprising the antibody; also provided are uses of the antibody for diagnosing, preventing and/or treating an infection of the Flu B and/or diseases caused by the infection.

The present application discloses stability-indicating potency assays for influenza vaccines.

Provided herein, in some aspects, are methods of administering to a subject a thymidine kinase substrate having a label and detecting presence or absence of the label as an indication of the presence of a polyomavirus (e.g., JCV and BK).

The present disclosure is directed to antibodies binding to and neutralizing ebolavirus and methods for use thereof. The present disclosure is directed to a method of detecting an ebolavirus infection in a subject comprising (a) contacting a sample from said subject with an antibody or antibody fragment having clone-paired heavy and light chain CDR sequences from Table 2, or an antibody fragment thereof; and (b) detecting ebolavirus glycoprotein in said sample by binding of said antibody or antibody fragment to antigen in said sample. In still further embodiments, the present disclosure concerns immunodetection kits for use with the iminunodetection methods described above.