“Have you a source for this:”
lots:
https://www.nature.com/articles/s41563-020-0746-0
https://labblog.uofmhealth.org/rounds/top-5-covid-19-vaccine-candidates-explained
https://www.ajmc.com/view/experts-highlight-covid-19-vaccine-developments-and-remaining-challenges
https://massivesci.com/articles/mrna-vaccine-covid19-coronavirus-moderna/
https://www.smithsonianmag.com/science-nature/mrna-vaccines-covid-19-180975330/
https://www.medpagetoday.com/infectiousdisease/covid19/87933
https://cen.acs.org/pharmaceuticals/vaccines/coronavirus-help-mRNA-DNA-vaccines/98/i14
https://www.phgfoundation.org/briefing/rna-vaccines
https://www.nejm.org/doi/full/10.1056/NEJMcibr2009737
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC1986720/
https://www.biopharmadive.com/news/coronavirus-moderna-mrna-vaccine-fda/575942/
i could post dozens more, but i think you’ll get the idea from the above links ...
I get what’s actually happening from the above links: which is that you put mRNA for antigen glycoproteins with ribosomes and they produce the antigen for the target virus. All perfectly normal behavior for a ribosome. The immune system recognizes the antigens as foreign and develops T-cell and B-cell responses, which then provide lasting immunity.
All done without the need to culture any materials or deal with any complicated splicing to get the wanted antigen onto a harmless virus (i.e. gen 2 vaccines). There is no genetic modification taking place. There is no editing your genes or your chromosomes. There is no damage to your body.
Just ribosomes making glycoproteins as they always do and the immune system reacting to foreign material in a way that builds future immunity.
The rest is pure fear, paranoia, luddite thinking with lots of conspiracy laden nonsense packed into it.