tetano
Editor, Senior Moderator
J Infect Dis. 2013 Jan 10. [Epub ahead of print]
Antibody Correlates and Predictors of Immunity to Naturally-occurring Influenza in Humans and the Importance of Antibody to the Neuraminidase.
Couch RB, Atmar RL, Franco LM, Quarles JM, Wells J, Arden N, Ni?o D, Belmont JW.
Source
Baylor College of Medicine, Houston, TX.
Abstract
Background. Serum antibody to the hemagglutinin (HA) of influenza viruses is a correlate and predictor of immunity to influenza in humans; the relative values of other correlates are uncertain.Methods. Serum and nasal secretions (NS) were collected fall and spring of 2009-11 from healthy adults who were monitored for acute respiratory illness (ARI). Sera were tested for hemagglutination-inhibition (HAI) antibody increase and secretions for virus if ill; enrollment sera were also tested for neuraminidase-inhibiting (NI) antibody and NS for neutralizing (neut), NI, IgA, and IgG anti-HA antibody.Results. Serum anti-HA and anti-neuraminidase (NA) antibody titers to 2009(H1N1) pandemic influenza virus (pH1N1) correlated with titers in NS (including IgA and IgG antibody). Increasing anti-HA and anti-NA titers in serum and NS tests all correlated with reducing infection and infection-associated illness. Multivariate analyses indicated serum HAI and NI each independently predicted immunity to infection and infection-associated illness. Only serum NI independently predicted reduced illness among infected subjects.Conclusions. Increasing anti-HA and NA antibody in serum and secretions correlated with reducing pH1N1 influenza virus infection and illness in healthy young adults. Both anti-HA and anti-NA antibody are independent predictors of immunity to influenza; ensuring induction of both by vaccination is desirable.
PMID:
23307936
[PubMed - as supplied by publisher]
http://www.ncbi.nlm.nih.gov/pubmed/23307936
Antibody Correlates and Predictors of Immunity to Naturally-occurring Influenza in Humans and the Importance of Antibody to the Neuraminidase.
Couch RB, Atmar RL, Franco LM, Quarles JM, Wells J, Arden N, Ni?o D, Belmont JW.
Source
Baylor College of Medicine, Houston, TX.
Abstract
Background. Serum antibody to the hemagglutinin (HA) of influenza viruses is a correlate and predictor of immunity to influenza in humans; the relative values of other correlates are uncertain.Methods. Serum and nasal secretions (NS) were collected fall and spring of 2009-11 from healthy adults who were monitored for acute respiratory illness (ARI). Sera were tested for hemagglutination-inhibition (HAI) antibody increase and secretions for virus if ill; enrollment sera were also tested for neuraminidase-inhibiting (NI) antibody and NS for neutralizing (neut), NI, IgA, and IgG anti-HA antibody.Results. Serum anti-HA and anti-neuraminidase (NA) antibody titers to 2009(H1N1) pandemic influenza virus (pH1N1) correlated with titers in NS (including IgA and IgG antibody). Increasing anti-HA and anti-NA titers in serum and NS tests all correlated with reducing infection and infection-associated illness. Multivariate analyses indicated serum HAI and NI each independently predicted immunity to infection and infection-associated illness. Only serum NI independently predicted reduced illness among infected subjects.Conclusions. Increasing anti-HA and NA antibody in serum and secretions correlated with reducing pH1N1 influenza virus infection and illness in healthy young adults. Both anti-HA and anti-NA antibody are independent predictors of immunity to influenza; ensuring induction of both by vaccination is desirable.
PMID:
23307936
[PubMed - as supplied by publisher]
http://www.ncbi.nlm.nih.gov/pubmed/23307936