Pfizer announce Covid-19 vaccine

How does this new RNA-based approach work, for how long, and is it safe?
15 November 2020
Presented by Chris Smith with Kim Hill, Radio New Zealand National. 
Production by Chris Smith.




What do we know about Pfizer and bioNTech's new RNA-based COVID-19 vaccine, preliminary results for which were announced this week? Who was tested in the trial? And what is a genetic vaccine, why were vaccinees innoculated twice, what does 90% effective mean, and what's the reason it needs to be stored at -80º C? Joining RNZ's Kim Hill, virologist Dr Chris Smith explains...


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