Validation of an Immunochromatographic Assay for IgG/IgM Antibodies to 2019- nCoV

Inclusion Criteria: 1. Suspected cases who meet the following 2 criteria at the same time: 1. Epidemiological history: There was a history of contact with confirmed cases before the onset of illness; or subjects with at least one symptom in the last week before accrual in the trial. Subjects who have been in contact with people positive for SARS-CoV-2 in the previous 14 days. 2. Clinical manifestations are defined as : Fever \>37.5°; dry cough, muscle pain and/or fatigue, anosmia, subjects with respiratory distress (Respiratory Rate \>25/min or O2 Saturation \<92%) or imaging characteristics of pneumonia; or the total number of white blood cells is normal or decreased with the lymphocyte count decreased in the early stage of onset or there is an abnormal C-Reactive protein. Other symptoms that clinical investigator will relate to SARS-CoV-2 infection. Subject or cancer patients who have been quarantined for suspect symptoms and have access to hospital to continue therapy or to receive major surgery 2. Confirmed cases, namely patients or subjects with positive Reverse Transcription-Polymerase Chain Reaction (RT-PCR) for SARS-CoV-2. On the basis of meeting the criteria for suspected cases, sputum, throat swabs, lower respiratory tract secretions, and other specimens are tested by realtime RT-PCR for positive nucleic acid detection of new coronavirus; or viral gene sequencing is highly homologous with known new coronaviruses. Patients positive are serially tested with SARS-CoV-2 lgM / IgG Rapid Test to evaluate the immune response in IgG negative patients and the reliability of the test in those patients who develop clinical signs of SARS-CoV-2 during the trial. 3. Patients who are considered at high risk for infection and eligible for active therapy and major surgery * Frailty (age and multiple comorbidities) planned to receive a standard systemic anticancer treatment comprising chemotherapy and/or immunotherapy and/or radiation therapy or to receive an experimental treatment * Major surgery or surgery after neoadjuvant chemotherapy and or chemo/radiotherapy Exclusion Criteria: 1. Ascertained influenza virus, parainfluenza virus, adenovirus, respiratory syncytial virus, rhinovirus, human metapneumovirus, Severe Acute Respiratory Syndrome coronavirus, and other known other viral pneumonia; 2. Ascertained mycoplasma pneumoniae, chlamydia pneumonia, and bacterial pneumonia; non-infectious diseases such as vasculitis, dermatomyositis, and organizing pneumonia.