title: [Some medical staff positive for serum SARS coronavirus antibody IgG have only mild symptoms].
abstract: OBJECTIVE
  To identify patients with SARS coronavirus infection who have only mild symptoms.
  
  
  METHODS
  Enzyme-linked immunosorbent assay was employed to detect serum antibody against SARS coronavirus in the lysate of whole SARS coronavirus from 19 SARS patients and 200 medical staff members without obvious SARS symptoms after possible exposure to the virus during routine medical practice.
  
  
  RESULTS
  Serum IgG antibody against SARS coronavirus was detected in all the 19 SARS patients, and among the 200 staff members, 20 (10%) were found positive for the antibody but with no obvious or only mild symptoms.
  
  
  CONCLUSIONS
  Serum IgG antibody against SARS coronavirus is positive in a small proportion (around 10%) of the medical staff members exposed to the virus in our hospital, but may not cause obvious symptoms, suggesting SARS coronavirus infection might in some cases have mild or even no clinical manifestations.
authors.affiliation: First People's Hospital of Foshan City, Foshan 528000, China. sjhua@fsyyy.com
authors.forename: Jian-hua
authors.initials: JH
authors.lastname: Si
authors.forename: Jia-ju
authors.initials: JJ
authors.lastname: Tan
authors.forename: Guang
authors.initials: G
authors.lastname: Yang
authors.forename: Li-xia
authors.initials: LX
authors.lastname: Tang
mesh_terms: D000328:Adult; D000914:Antibodies, Viral / Q000097:blood*; D005260:Female; D006801:Humans; D007074:Immunoglobulin G / Q000097:blood*; D017758:Infectious Disease Transmission, Patient-to-Professional; D008297:Male; D008505:Medical Staff, Hospital; D045473:Severe acute respiratory syndrome-related coronavirus / Q000276:immunology / Q000302:isolation & purification*; D045169:Severe Acute Respiratory Syndrome / Q000175:diagnosis* / Q000276:immunology / Q000635:transmission
chemical_list: D000914:Antibodies, Viral; D007074:Immunoglobulin G