抄録
A possibility of the immunity effect of influenza related with ABO blood groups was examined from the viewpoint of antibody titer before and after an influenza vaccination.
The results are as follows:
1) A-blood group showed a lower increasing rate than O-blood group.
2) But in case that the antibody titer has been already high since pre-vaccination, no difference is observed between both groups.
3) This fact suggests that subjects w ith low antibody titer before vaccination should be seeked for to be examined.
4) No significant d ifference between influenza A and B was observed in this case.
