No, the Covid-19 vaccines will not alter your DNA. Both vaccines currently used in the United States rely on messenger RNA, or mRNA.
Based on clinical trial data, experts say it's unlikely that any of the vaccines currently authorized by the FDA will interact with other medications.
No, the Covid-19 vaccines will not make you sick with the virus. None of the Covid-19 vaccines authorized by the Food and Drug Administration (FDA) or currently under consideration for approval contain the live virus. 
Yes – current vaccines provide at least some protection against the Delta variant. According to multiple studies (outlined here), the protection against Delta varies among vaccines. The studies estimate that the J&J vaccine is more than 67% effective, Moderna between 72 and 95% effective, and…
We're still waiting for data to be released. Early findings suggest that the vaccines are just as effective against some of the new variant strains but less effective against others.
There will be enough vaccines for everyone, but it will take some time. There are limited vaccine doses available right now, but the federal government is actively working with vaccine manufacturers to increase production. As other vaccines are authorized, even more doses will be available to the…