https://www.sciencedirect.com/science/article/pii/S0264410X20311464?via%3Dihub
Across all influenza seasons, HD-IIV3 demonstrated improved protection against ILI compared to SD-IIV (rVE = 15.9%, 95% CI: 4.1–26.3%). HD-IIV3 was also more effective at preventing hospital admissions from all-causes (rVE = 8.4%, 95% CI: 5.7–11.0%), as well as influenza (rVE = 11.7%, 95% CI: 7.0–16.1%), pneumonia (rVE = 27.3%, 95% CI: 15.3–37.6%), combined pneumonia/influenza (rVE = 13.4%, 95% CI: 7.3–19.2%) and cardiorespiratory events (rVE = 17.9%, 95% CI: 15.0–20.8%). Reductions in mortality due to pneumonia/influenza (rVE = 39.9%, 95% CI: 18.6–55.6%) and cardiorespiratory causes (rVE = 27.7%, 95% CI: 13.2–32.0%) were also observed. Similar pooled rVEs were observed in both matched and mismatched seasons and in seasons where A/H3N2 or A/H1N1 strains were predominantly circulating.
选取这篇举例的原因是，这是一篇文献汇总，其引用了大量其他研究的结果，更全面。
希望你也能举出支持你论点的文献研究：
比如“第一，很多人打了流感疫苗就流感了，不打倒正常。这说明什么？”
这个事例的比例多少？研究涉及的样本空间，研究样本人群构成，对照组情况。
比如“第二，你去查一下疫苗保鲜剂是些什么东西再来说疫苗的毒副作用不迟！”
有关这个毒副作用研究的样本空间，研究样本人群构成，症状发病率和自然发病率的对比。