An inflammatory disorder suspected to be caused by the coronavirus has led to the deaths of children in the US, UK and France.
In all, 53 people have died since late October. Most of those who have died have been babies and young infants, including 23 babies aged under 12 months and another 25 children aged between 1 and 4 years.
Growing scepticism of vaccines in Europe, especially in countries like France should be a cause for concern.
Research shows for the first time how measles – one of the world's most contagious diseases – erases the body's memory of previous pathogens, effectively wiping its immunity memory.
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