Acute multiple sclerosis exacerbation after #Covidvaccination:
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9090220/

"COVID-19 vaccination may transitorily interfere with cardiac conduction system even in subjects without known underlying heart disease."
https://sciencedirect.com/science/article/pii/S204908012200454X?via%3Dihub
A case of transient but recurrent complete heart block after #COVIDVaccination

Acute cervical dystonia (symptoms: twisting neck posturing, neck pain & neck tremor) after #Covidvaccination:
https://sciencedirect.com/science/article/pii/S0303846722001858?via%3Dihub
"We attribute the occurrence of cervical dystonia to the vaccine due to the temporal relationship. ... The likely mechanism is autoimmune."

A 15-years-old girl: Encephalopathy, myocarditis and thrombocytopenia following the second dose of Pfizer-BioNTech mRNA vaccine (BNT162b2): https://jni-journal.com/article/S0165-5728(22)00078-9/fulltext
#Covidvaccination

" ... infection by HIV greatly enhances monkeypox infections, as in the absence of HIV/ AIDS most people will naturally recover as noted but that is not the case for the dually infected."
https://sciencedirect.com/science/article/pii/S0096300312002743
Does #Covidvaccination increase the chance of monkeypox infection?

Bullous pemphigoid (an autoimmune subepidermal blistering disease of the skin) after #Covidvaccination:
https://onlinelibrary.wiley.com/doi/10.1111/dth.15595
"When patients develop blisters after COVID-19 vaccination, dermatologists should consider this possible complication."

A case of herpes zoster ophthalmicus & meningitis after #Covidvaccination:
https://jkms.org/DOIx.php?id=10.3346/jkms.2022.37.e165
" ... we believe that it is important to inform patients about this potential risk ..."

Acquired haemophilia A with concurrent diagnosis of pleomorphic dermal sarcoma (cancer!) after #Covidvaccination (booster):
https://www.frontiersin.org/articles/10.3389/fimmu.2022.868133/full
" ...there is an urgent need for reporting any events in association with SARS-CoV-2 vaccination ..."

Necrotizing lymphadenitis (irreversible damage of lymph nodes) after #Covidvaccination:
https://www.tandfonline.com/doi/full/10.1080/21645515.2022.2071080
A 27-year-old woman.
" ...it is reasonable to speculate that this case is another side effect of the COVID-19 vaccine."

Chronic inflammatory demyelinating polyneuropathy (CIDP) after #Covidvaccination:
https://www.cureus.com/articles/93533-chronic-inflammatory-demyelinating-polyneuropathy-post-mrna-1273-vaccination
" ... COVID-19 vaccinations may be associated with inflammatory neuropathies."

Fulminant myocarditis 24 days after #Covidvaccination:
https://www.jstage.jst.go.jp/article/internalmedicine/advpub/0/advpub_9800-22/_article
Case of a 60-year-old woman.

In case of myocarditis after #Covidvaccination one can find SARS-CoV-2 spike protein antibodies in the heart tissue ...
https://www.jstage.jst.go.jp/article/internalmedicine/advpub/0/advpub_9800-22/_article
Cardiac myocytes seem to extress the spike protein with subsequent heart inflammation. The immune system attacks the heart.