How do the Pfizer and Moderna mRNA vaccines work?
Another thing that I was wondering about is this:
> … no [mRNA] vaccines of this type have been approved for widespread human use.
according to [CBC](https://www.cbc.ca/news/health/covid-19-vaccine-pfizer-faq-1.5795486).
Why is this the case? Thanks!
In: Biology
mRNA is the blueprint your cells use to make proteins. If you make the MRNA sequence for a virus protein, your cells could take that mRNA and make those virus proteins. This is good, because your cells could make a lot of those proteins, and since they aren’t the whole virus (like in other vaccines), it can’t make you sick. But, it can expose your immune system to the viral proteins, so that when real virus comes along, your immune system will attack it
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