Image - 25 August 2021

Scandinavian brown bear

Researchers used historical museum collections of Swedish brown bears to follow the effects of human-made antibiotics.

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By:: Mats Björklund
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Size:: 3952 x 3456, 1.27 MB

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History of human antibiotic use written in the oral bacteria of wild brown bears

An international team of researchers used historical museum collections to study the effects of human-made antibiotics over the entire history of their application. They found that the increased use of antibiotics in medicine and agriculture in the 1950-1990s led to increases in antibiotic resistance in wild Swedish brown bears. However, the latest 20 years show a downward trend in resistance.

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