GREAT NEWS on the Pfizer and BioNTech vaccine approval in the UK. But how do RNA vaccines work? Do they alter your DNA? Are they safe? How long do they take to produce? Vaccine experts answer

Here's Harvard Professor Galit Alter from @ragoninstitute on the safety question. (Nov-14)

More from Galit on whether RNA vaccines can affect your DNA. Spoiler alert: they can't. (Nov-11)

Galit again, this time on whether it's being tested in higher-risk groups (Nov-9)

Want to know how to *actually* make an RNA vaccine? Here's Dr @PaulFMcKay on how the Imperial College one is made. (Oct-30)

Here's Dr @AnnaBlakney from Imperial College with a bit more on how RNA is made (Nov-22)

More from Anna on how the RNA gets into a cell and makes the protein (Nov-16)

More from Anna on how RNA vaccines work (Oct-30)

And how quickly can they be produced? Well here's Anna on the answer for the Imperial College RNA vaccine. (Oct-26)