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最近,荷兰的研究人员给1806名60岁以上的病人分别接种流感疫苗或安慰剂,四周后通过问卷调查,对副作用进行了评估.结果在接种疫苗的病人中210人(约23%)出现副作用,而在安慰剂组中127人(约14%)有副作用.疫苗组发生局部反应如肿胀、持续疼痛、痒、发热和不适感等的比例明显高于安慰剂组(分别为18%和7%),而全身副作用的发生率,疫苗组与对照组无明显差异(分别为11%和9%),且所有副作用都是轻微和短暂的.
Recently, Dutch researchers vaccinated 1806 patients over the age of 60 with either a flu vaccine or a placebo, and assessed the side effects four weeks later by questionnaire. As a result, 210 (23%) of those vaccinated had side effects , While 127 (14%) had side effects in the placebo group, with a significantly higher rate of local reactions such as swelling, persistent pain, itching, fever and discomfort in the vaccine group compared to placebo (18% and 7% %), Whereas the incidence of systemic side effects did not differ significantly between the vaccine group and the control group (11% and 9%, respectively) and all the side effects were mild and transient.