Plans to introduce a minimum unit price for alcohol in Scotland risk infringing EU rules on free trade, according to an initial ruling by Europe's top court.
Two children have been paralysed in the first outbreak of polio in Europe for five years, the World Health Organization says.
A woman who died on Saturday in northern Sierra Leone has tested positive for Ebola, officials have confirmed.
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Surgeons in London use lasers to diagnose abnormal tissue during an operation to remove a brain tumour.