Today, I got a vaccine shot for COVID-19. I don't have any side effects so far, but it's said side effects often appear the next day and the second time is tougher. I am surprised the shot was not painful and its injection mark is too tiny to see.
The vaccine was manufactured by Moderna, so it uses the mechanism of mRNA. I don't perfectly understand how the vaccine works because I only studied basic biology in high school, but I'm positive it's one of the greatest scientific innovations ever. This technology will save countless people all over the world.