The present invention relates to detecting serum anti-FadA antibodies in test samples from a patient. Additionally, aspects of the present invention provide the basis for detection of serum anti-FadA antibody levels from test samples and correlation with various conditions of clinical relevance.

The present invention is directed to an isolated synthetic tripeptide of formula H-D-Phe-N-Methyl-L-Val-L-Ala-OMe (SEQ ID NO:1), or a derivative thereof, and to the corresponding lipotripeptides, which are specific to Mycobacterium avium subsp. paratuberculosis (Map) S-type strain, as well as derivatives and conjugates thereof. The invention also concerns the use of these antigens in different methods and tests for detecting Map infection, especially by detecting humoral response and cell mediated response of infected animals. The invention is also directed to a genetic signature of Map and a mass spectrometry and NMR spectroscopy signature of Map presence or infection.

The disclosure relates to compositions, assays, methods and kits comprising one or more amino acid sequences of a filovirus protein, or a fragment thereof, which find use in the detection of a filovirus infection and/or the presence of antibodies specific for a filovirus in a biological sample.

The invention provides compositions (e.g., peptide compositions) useful for the detection of antibodies that bind to Borrelia antigens. The peptide compositions comprise polypeptide sequences comprising variants in the IR6 domain of the Borrelia VlsE protein. The invention also provides devices, methods, and kits comprising such peptide compositions and useful for the detection of antibodies that bind to Borrelia antigens and the diagnosis of Lyme disease.

Disclosed herein are devices that can be used to detect neutralizing antibodies against multiple pathogens in a quick and accurate manner. An example device includes a substrate; a non-fouling layer; a plurality of pathogen regions, each pathogen region including a different pathogen; and at least one detection region, the detection region including a detection agent that is capable of specifically binding each pathogen and an excipient. In addition, an example method includes contacting a biological sample with a device, and detecting the presence of a neutralizing antibody in the biological sample for each pathogen, wherein the presence of the neutralizing antibody is detected by inhibiting the binding of the detection agent to each pathogen.

Arrays comprising probes comprising probes from more than one influenza strain or subtype are provided. Methods of using the arrays, as well as kits and systems comprising the arrays are also provided.

A lateral flow assay device includes a test strip that is configured to receive a sample fluid and detect a presence of antibodies to one or more of a plurality of proteins of the target pathogen. The lateral flow assay device includes a conjugate pad and a membrane. The conjugate pad contains a plurality of the proteins of the target pathogen, each conjugated with a label. If the sample fluid contains antibodies that are specific to the target pathogen through any of the target pathogen's proteins, a binding takes place between those antibodies and the corresponding tagged protein. The membrane may include a plurality of test lines. Each test line may contain the immobilized binding reagent to one antibody class, resulting in the concentration of all the molecules of that antibody class on the test line.

The current invention provides a multiplex method for screening bovine samples for antibodies against several important pathogens. These pathogens include Bovine Viral Diarrhoea Virus (BVDV), Bovine Herpesvirus-1 (BoHV-1), Mycobacterium paratuberculosis (MAP), Leptospira species, Neospora caninum and Fasciola hepatica. This multiplex screening is enabled by substrates with immobilized pathogen antigens and offer multiple advantages for the routine testing of farm animals.

The present invention relates to an improved assay and in particular to an improved assay that is capable of consistently measuring antibody titre, especially neutralising antibody (NAb) titre, at lower thresholds and/or with greater speed than conventionally-known assays. The invention further relates to use of such assays in combination with the provision of gene therapy and/or in combination with the provision of methods aimed at removal/depletion of neutralising antibodies from a patient.

Arrays comprising probes comprising peptides from more than one flavivirus are provided. Methods of using the arrays, as well as kits and systems comprising the arrays are also provided.