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Study finds novel association between antimicrobial resistance and climate change

ANI | April 14, 2019 04:47 PM
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Washington D.C. [USA], Apr 14 (ANI): New research has found a unique association between antibiotic resistance and climate change.

The study was presented at the meeting ECCMID 2019.

Antimicrobial resistance (AMR) is a threat across Europe with burdens mainly peaking around the Mediterranean Basin. Recently, the association of AMR with climate gained increased attention, since resistance increased with increasing local temperatures in the United States.

This new research investigated whether the explanatory strength of climate variables holds true in a region with diverse healthcare systems and societies and whether a climate change dimension can be identified, using Europe as a case region.

The researchers conducted a 30-country observational study across Europe. The six-year prevalence of carbapenem-resistant Pseudomonas aeruginosa (CRPA), Klebsiella pneumonia (CRKP), multiresistant Escherichia coli (MREC), and Methicillin-resistant Staphylococcus aureus (MRSA) was determined based on data published by the European Centre for Disease Prevention and Control (ECDC)

Statistical analysis and computer modelling were performed to identify associations between AMR and seasonal temperature, including potential socioeconomic and health system related confounders.

The team found significant associations of CRKP, MREC and MRSA with the warm-season mean temperature, which had a higher contribution to MRSA variance than outpatient antimicrobial drug use.

Furthermore, CRPA was significantly associated with the warm-season change in temperature. The authors also used their models to estimate AMR in four other countries, not included in the database used (Belarus, Serbia, Switzerland and Turkey). The results displayed varying degrees of accuracy compared to empirical data, with comparatively good matches for CRPA in all countries except Belarus.

The authors concluded, "Our study identified a novel association between AMR and climatic factors in Europe. These results reveal two aspects: climatic factors significantly contribute to the prediction of AMR in different types of healthcare systems and societies, while climate change might increase AMR transmission, in particular, carbapenem resistance."

They added, "While these results remain hypothetical as it is unknown if any causal association exists, future analysis of AMR and climatic developments is necessary to determine whether potential climate change effects on AMR become stronger." (ANI)

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