This disclosure provides novel broadly neutralizing anti-SARS-CoV-2 antibodies or antigen-binding fragments thereof. The disclosed anti-SARS-CoV-2 antibodies constitute a novel therapeutic strategy in protection against SARS-CoV-2 infections.

Provided herein are methods for diagnosing the probability of extended duration of severe COVID19 symptoms in a subject infected with a SARS-CoV2 virus or suspected of being infected with the SARS-CoV2 virus, the method including (a) providing a biological sample from the subject; and (b) detecting the presence of an anti-ACE2 IgM antibody in the biological sample, thereby diagnosing the probability of extended duration of severe COVID19 symptoms in the subject.

The invention provides a set of novel Single domain VHH antibodies against SARS-CoV-2 (SEQ ID N 1-6) and their use to detect and neutralize the wild type virus.

Disclosed herein are methods, kits, and systems for detecting at least one type of SARS-CoV-2 antigen and at least one type of anti-SARS-CoV-2 antibody in a subject, which comprises the use of at least two different types of microparticle reagents for binding at least one type of SARS-CoV-2 antigen and at least one type of anti-SARS-CoV-2 antibody and at least two different types of detection reagents for binding each of the microparticle reagents.

Disclosed are a fully human broad-spectrum neutralizing antibody against coronavirus, and the use thereof. Specifically disclosed are a fully human monoclonal antibody against an S2 region of coronavirus S protein, a nucleic acid sequence encoding the antibody, and a preparation method therefor. The antibody can effectively bind to and neutralize a variety of coronaviruses in a broad spectrum manner, and can be used for preventing and treating diseases related to coronavirus infection, such as SARS-CoV-2. Further disclosed is the potential use thereof in vaccine design.

The present invention relates to a device for identifying and monitoring possible environmental contamination by pathogenic and non-pathogenic microorganisms, e.g., viruses. The present invention further relates to a system comprising said device.

Diagnostic assay devices for detecting the presence of an analyte in a sample solution may comprise a microreactor configured to form a sample solution containing the analyte, flow the sample solution therethrough in a first direction to form an analyte-capture molecule complex, and transfer the sample solution to an absorbent strip pad configured to flow therethrough, in a second direction crossing the first direction, the sample solution including the analyte-capture molecule complex and indicate a presence of the analyte-capture molecule complex. The diagnostic devices may be used, for example, to identify the presence of SARS-Cov2, RSV, influenza A, influenza B or other pathogens in samples from patients.

Diagnostic assay devices for detecting the presence of an analyte in a sample solution may comprise a microreactor configured to form a sample solution containing the analyte, flow the sample solution therethrough in a first direction to form an analyte-capture molecule complex, and transfer the sample solution to an absorbent strip pad configured to flow therethrough, in a second direction crossing the first direction, the sample solution including the analyte-capture molecule complex and indicate a presence of the analyte-capture molecule complex. The diagnostic devices may be used, for example, to identify the presence of SARS-Cov2, RSV, influenza A, influenza B or other pathogens in samples from patients.

An integrated device for rapid detection of SARS-CoV-2 is disclosed. The integrated device includes a front-end system, a back-end system, and a microfluidic channel. The front-end system includes a detection region and a control region. The detection region and the control region have similar structures, each including an interdigital electrode and a graphene film. The microfluidic channel is arranged to cover the detection region so as to allow the interdigital electrode of the detection region to be exposed to the breath sample. The graphene film of the detection region has a surface resistance higher than that of the graphene film of the control region when the detection region is exposed to a selected virus. The back-end system is configured to detect and compare the surface resistance of the graphene films of the detection region and the control region for determining whether the selected virus is present in the breath sample.

The invention relates to antibodies, and antigen binding fragments thereof, that potently neutralize infection of ZIKV. The invention also relates to antigenic sites to which the antibodies and antigen binding fragments bind, as well as to nucleic acids that encode and immortalized B cells that produce such antibodies and antibody fragments. In addition, the invention relates to the use of the antibodies and antibody fragments of the invention in screening methods as well as in the diagnosis, prophylaxis and treatment of ZIKV infection.