In essence, they found that the babies responded to the vaccine by having an intense Th2 response that persisted long after it should have disappeared
Funnily the actual paper, (
Martin et al, 2003), doesn't see it quite that way ...
The stronger antibody responses to hepatitis B vaccine were not associated to higher induction of Th2 responses during the primary phase of the response ...
And it would certainly be misleading to make out this is some general trend from vaccination, the paper goes on to note ...
Indeed, young infants produce lower concentrations of antibodies in response to diphtheria, pertussis, tetanus, Haemophilus influenzae type B and measles vaccines than adults
The antibody levels also were not persistently substantially higher, they were higher in response to a repeated immune challenge. In other words these children were not immunosupressed in any way, in fact they had a more intense immune response, in terms of antibody levels, to repeated challenges than did the adults in the study.
To call it a completely abnormal response is like saying that having all one's teeth fall out is abnormal, and yet all children have this happen. Recognising a difference in immune responses between newborns and adults doesn't make one normal and the other abnormal.
TTFN,
WK