“A new type of extreme mould is sweeping through Denmark’s museums, threatening some of the nation’s most important paintings and cultural objects, conservators have warned.
Described as an ‘epidemic for Golden Age paintings’, the highly resistant mould covers objects in a white coating and has been detected in 12 of the country’s museums” 
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the Guardian
Denmark’s museum objects at risk from ‘extreme’ new mould, say conservators
The ‘epidemic for Golden Age paintings’ may already be a global problem, with the fungi a possible health hazard