[https://academic.oup.com/cid/article/74/11/1933/6353927; Intravenous Injection of Coronavirus Disease 2019 (COVID-19) mRNA Vaccine Can Induce Acute Myopericarditis in Mouse Model, Can Li, Yanxia Chen, Yan Zhao, David Christopher Lung, Zhanhong Ye, Wenchen Song, Fei-Fei Liu, Jian-Piao Cai, Wan-Man Wong, Cyril Chik-Yan Yip, Jasper Fuk-Woo Chan, Kelvin Kai-Wang To, Siddharth Sridhar, Ivan Fan-Ngai Hung, Hin Chu, Kin-Hang Kok, Dong-Yan Jin, Anna Jinxia Zhang, Kwok-Yung Yuen; Clinical Infectious Diseases, Volume 74, Issue 11, 1 June 2022, Pages 1933–1950, https://doi.org/10.1093/cid/ciab707]
What you are seeing here is a contrast of a control mouse with two vaccine injected mice: One having received the vaccine intravenously and the other, labeled IM, intramuscularly. While I think the heart looks enlarged in both of the vaccine injected mice, the middle mouse shows clear signs of myocarditis (Look at the how read the tissue surrounding its heart is—that is myocarditis.) This leads me to believe that a large number of these adverse events are due to accidental intravenous injection.
Consider this post from the BMJ site:
"There are anecdotal reports of a transient "metallic taste" being experienced immediately after receiving "intramuscular" injections of Covid vaccines which might suggest that some of the vaccine has entered a vein, The taste phenomenon is well recognised for example in the case of intentionally injected intravenous contrast media and lignocaine (lidocaine).
It has been suggested that intravenous Covid vaccine injection may be associated with longer-term adverse events (1) and this is supported by an animal model (2) where anti-platelet antibodies were detected after intravenous but not intramuscular injection of Covid vaccine in mice. Consequently, the trials saw fewer accidental intravenous administrations of the vaccine than occurred during the real-world rollout: Making it appear safer than it really was.
While shoulder pain associated with vaccination is not always due to inadvertent injection into the subdeltoid bursa (3), it does seem sensible that techniques aimed to prevent intramuscular injections from entering the vasculature or other sites should be investigated."
So, assuming nonmalevolence, it seems Big Pharma and the FDA made three very serious mistakes:
1) The experimental protocols were better than real world ones, leading to an underassessment of the risks of accidental intravenous administration. Namely, the nurses and doctors administering the vaccine during trials were better trained than the pharmacists administering it during the rollout.
2) Not performing proper animal studies. If experiments like the one shown above had been done, the dangers of accidental intravenous administration might have been better anticipated.
3) Not performing the vaccine trials on an appropriately representative sample of the population. Namely, there needed to be more young people in the sample if they were going to insist that young people take the vaccine. The immune systems of younger people and older people are dissimilar: This is exactly why the Spanish Flu was so deadly to young adults; it was not the flu itself that killed people but the immune systems reaction, a phenomenon known as a cytokine storm.
A final piece of advice: If you, for some reason, insist on taking this vaccine and you notice a metallic taste or intense shoulder pain post-vaccination, take note of it. Consider avoiding strenuous activities and remaining in the vicinity of medical care.