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Norway reviewing deaths of frail and elderly patients vaccinated against Covid-19
By Amanda Sealy, Sarah Dean & Ivana Kottasová
The Pfizer vaccine may not be the best choice for frail people, but it's too early to make firm conclusions
By Nathan Bartlett
Covid Vaccine Safety: Side Effects in Context
By Jason Gale & John Lauerman
Norway advises caution in use of Pfizer vaccine for the most frail
By Ludwig Burger & Andreas Rinke