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作者观察了已经DT和DTP基础免疫的幼儿对加强免疫的反应性及免疫应答。选23名经DT免疫的儿童和38名经DTP免疫的儿童进行对比观察。经DT和DTP基础免疫后12个月,90%以上幼儿的白喉和破伤风抗毒素仍维持在保护水平。幼儿于18月龄时接受加强免疫,加强免疫后1～2个月,100%儿童的白喉和破伤风抗毒素达到了保护水平。用DT和DTP作基础免疫后12个月,破伤风抗毒素水平没有明显差异,而用DTP作基础免
The authors looked at the reactivity and immune response of toddlers who had been given basic immunizations with DT and DTP to booster immunity. Twenty-three children immunized with DT and 38 children immunized with DTP were compared. Twelve months after the basal immunization with DT and DTP, more than 90% of young children’s diphtheria and tetanus antitoxin remained at protection levels. Toddlers receive booster immunization at 18 months of age, and protection of diphtheria and tetanus antitoxins is achieved in 100% of children 1 to 2 months after boosting. Twelve months after basal immunization with DT and DTP, there was no significant difference in tetanus antitoxin levels, but DTP