Thank you for your answer!
Of course I know the story about vaccines and autism. This rumour came up after an english doctor (Andre Wakefield) claimed that he found a positive linking between the MMR vaccination and autism.
But this study was made under poor conditions. 10 out of his 13 co-authors declared that and withdrew from the study. The journal also withdrew the article. And Andre Wakefield lost his license. Not did he only make a bad studie from the design itsself (only 12 probands or so) but he only had some major self interest (he was involved in a process against the company of the MMR-vaccine before he realeased his study). Following studies under way better scientific circumstances never found a correlation between the vaccine and autism.

The abitlity of mutation is not a problem with vaccines as far as we know of today. However it is a huge problem with antibiotics - Many doctors just use them without thinking. Resistent bacteria will be a huge problem. HOWEVER PLEASE DO NOT take this as an advice to not take ABs. I am just saying they should be used carefully. But of course ABs are one of the most important medicines ever invented.

If you are interested in medicine you should check out my story: https://steemit.com/introduceyourself/@theaustrianguy/the-story-of-how-a-young-aspiring-doctor-from-beautiful-austria-wants-to-help-the-world-grow
and follow me ;) A lot of health stuff coming up on my channel!