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据美国疾病预防与控制中心的最新调查,对幼儿注射疫苗时,有28%没有严格按规定的方式进行。调查发现,1/5的孩子接受疫苗注射时少打了一针或多针。专家指
According to the latest US Centers for Disease Control and Prevention survey, vaccination of young children, 28% did not strictly follow the prescribed method. The survey found that 1 in 5 children received fewer shots or more needles when vaccinated. Expert refers to