Climate Change Linked to Rising Antibiotic Resistance in Salmonella

New research reveals that climate change is contributing to a 10% increase in antibiotic resistance genes within salmonella bacteria. The study, published in The Lancet Planetary Health, reports 82% of countries are experiencing this rise, with the most notable increases in the Middle East and North Africa, followed by South Asia and Sub-Saharan Africa.

These bacteria become resistant when antibiotics fail to kill them, a phenomenon now exacerbated by climatic shifts. Researchers, including those from the Chinese Academy of Sciences, discovered that increases in antimicrobial resistance aren't merely linear with rising temperatures but are influenced by complex interactions with weather patterns. Their extensive analysis of salmonella samples from 1940 to 2023 indicates a 38% global rise in resistance genes during this period.

The study also projected future scenarios under different climate emissions paths, highlighting that lower emissions and prudent antibiotic usage could significantly decrease resistance gene levels by 2100. The researchers emphasize the urgent need for integrated approaches combining climate strategies, antibiotic stewardship, and enhanced disease monitoring across human and animal populations to mitigate this growing threat.

(With inputs from agencies.)