急性疾病:如果家长发现孩子正在发烧,特别是发热在37.6℃以上或同时伴有其他明显症状的儿童,应暂缓接种疫苗。孩子康复并经过一段时间调养后再接种疫苗。此外,如果孩子处于某种急性疾病的发病期或恢复期,或处于某种慢性疾病的急性发作期,均应推迟疫苗的接种,待孩子康复以后再接种疫苗。过敏体质:有过敏体质的儿童接种疫苗后偶可引起过敏反应,造成发生不良反应的后果。如果发现过去接种某种疫苗曾发生过 Acute illness: If parents find their child has a fever, especially in children with fever over 37.6 ° C or other obvious symptoms, suspend the vaccination. Children recover and regain vaccination after a period of time. In addition, vaccination should be postponed if the child is at the onset or recovery of an acute illness or during an acute exacerbation of a chronic condition, and the child is vaccinated again after he has recovered. Allergy: children with allergies even after vaccination can cause allergic reactions, resulting in the consequences of adverse reactions. If you have found that vaccination has occurred in the past