The vaccines merely help limit the seriousness of the symptoms for some of those who are injected. Failure of SARS and MERS vaccines in animal trials involved pathogenesis consistent with an immunological priming that could involve autoimmunity in lung tissues due to previous exposure to the SARS and MERS spike protein. And here it comes, the claim that COVID-19 vaccines cause cancer. Such studies should be undertaken before use of any vaccine against SARS-CoV-2 is used in humans. Both papers show that a previous infection with SARS-CoV-2/COVID-19 primes the immune system to make a very robust response to a single dose of COVID-19 vaccine. There’s a reason vaccines have such long clinical trials (phase 3 and 4); to rule-out adverse long-term effects. Some experts fear next-generation Covid vaccines may be worse COVID-19 vaccine administration Source: Data retrieved from WHO dashboard on 08 March 2021, https://covid19.who.int/ Table. Furthermore, the pathogenic priming will not allow the proper elicitation of the immune system upon vaccination, thereby resulting in the reduction of efficacy of the vaccines. Vaccine They aren’t tainted by material from aborted fetuses. 13 COVID-19 vaccine myths Pfizer COVID Vaccine Trial Shows Alarming Evidence of … Vaccines Covid in COVID