The Covid-19 pandemic has led to huge drops in childhood vaccinations, leaving countries more vulnerable to disease outbreaks, the World Health Organization has warned.
世界衛生組織(WHO)警告稱，新型冠狀病毒肺炎（COVID-19，即2019冠狀病毒病）疫情已導致兒童疫苗接種率大幅下降，使相關疾病更容易在各國爆發。
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