“BACKGROUND: An outbreak of pertussis in a US elementary school with high vaccination coverage was investigated to evaluate vaccine effectiveness and to identify potential contributing factors.”
“Despite high levels of vaccination coverage, pertussis circulation cannot be controlled at all. The results question the efficacy of the present immunization programmes.”
“The odds of having a history of asthma was twice as great among vaccinated subjects than among unvaccinated subjects”
“DTP or tetanus vaccination appears to increase the risk of allergies and related respiratory symptoms in children and adolescents.”