Both groups were injected with vaccines:
βInfants were vaccinated with either diphtheria and tetanus toxoids alone (DT toxoids, 1726 infants) or diphtheria, tetanus, and pertussis toxoids (DTP toxoids, 1724 infants) at 3, 5, and 12 months of age.β
So this is not a controlled experiment in the sense that it provides any value in comparing health outcomes for people who were jabbed against those who are not. Total rubbish. Maybe you should read a little more than just the title.