Circulating antibody-secreting cells during acute respiratory syncytial virus infection in adults

J Infect Dis. 2010 Dec 1;202(11):1659-66. doi: 10.1086/657158. Epub 2010 Oct 27.


Background: The specificity and duration of circulating human antibody-secreting cells (ASCs) after vaccination have been well described, but characteristics of ASCs during acute respiratory infections have not been well studied.

Methods: Circulating antigen-specific ASCs were measured at 3 time points (enrollment, days 10-16, and days 22-45) in 40 adults during respiratory syncytial virus (RSV) infection.

Results: Of the 40 patients, 36 (90%) had detectable circulating RSV F protein-specific ASCs within 11 days after illness onset. The magnitude of the RSV-specific ASCs was 1-1500 spots per 10⁶ peripheral blood mononuclear cells (mean frequency [± standard deviation], 200 ± 256 spots per 10⁶ peripheral blood mononuclear cells). ASCs were detected on day 8-16 and day 22-45 after symptom onset in 78% and 48% of subjects, respectively. Subjects shedding virus for >10 days were more likely to have a positive response to ASC enzyme-linked immunospot assay at the late time point than those shedding for ≤10 days (8 of 12 subjects vs 2 of 11 subjects; P = .02).

Conclusions: The kinetics of ASC circulation during acute mucosal viral infections was more prolonged than that we had observed after a single intramuscular injection with inactivated influenza vaccine in a study reported elsewhere. The association between the duration of virus shedding and the persistence of detectable viral-specific ASCs suggests that ongoing antigen persistence induces a prolonged temporal pattern of ASC generation.

Publication types

  • Research Support, N.I.H., Extramural

MeSH terms

  • Adult
  • Aged
  • Aged, 80 and over
  • Antibodies, Viral / blood*
  • Antibody-Producing Cells / immunology*
  • Antigens, Viral
  • B-Lymphocytes
  • Enzyme-Linked Immunospot Assay
  • Female
  • Humans
  • Male
  • Middle Aged
  • New York
  • Prospective Studies
  • Respiratory Syncytial Virus Infections / blood
  • Respiratory Syncytial Virus Infections / diagnosis
  • Respiratory Syncytial Virus Infections / immunology*
  • Respiratory Syncytial Viruses / genetics
  • Respiratory Syncytial Viruses / immunology*
  • Respiratory Syncytial Viruses / isolation & purification
  • Reverse Transcriptase Polymerase Chain Reaction


  • Antibodies, Viral
  • Antigens, Viral