STOCKHOLM: Researchers Katalin Kariko and Drew Weissman won the Nobel Medicine Prize on Monday for work on messenger RNA technology that paved the way for groundbreaking Covid-19 vaccines.The pair, who had been tipped as favourites, “contributed to the unprecedented rate of vaccine development during one of the greatest threats to human health in modern times”, the jury said.The World Health Organisation declared Covid-19 a pandemic in March 2020 and the first mRNA vaccines were approved...