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Does Getting the Covid-19 Vaccine Stop You Spreading It? Scientists Don't Know Yet.
By Sumathi Reddy
Norway reviewing deaths of frail and elderly patients vaccinated against Covid-19
By Amanda Sealy, Sarah Dean & Ivana Kottasová
Covid-19 Vaccine-Related Deaths: Norway Officials Say No Direct Link to Shot
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Covid Vaccine Safety: Side Effects in Context
By Jason Gale & John Lauerman
The Pfizer vaccine may not be the best choice for frail people, but it's too early to make firm conclusions
By Nathan Bartlett
Norway advises caution in use of Pfizer vaccine for the most frail
By Ludwig Burger & Andreas Rinke