Cannabis resin sold on the streets of Madrid is contaminated with dangerous levels of faecal matter, a study says. Traces of E.coli bacteria and the Aspergillus fungus were found by analysts who examined 90 samples bought in and around the Spanish capital.

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Cannabis resin sold on the streets of Madrid is contaminated with dangerous levels of faecal matter, a study says. Traces of E.coli bacteria and the Aspergillus fungus were found by analysts who examined 90 samples bought in and around the Spanish capital.