In recent years, antimicrobial resistance has emerged as a deadly threat to public health.
According to the World Health Organization (WHO), antimicrobial resistance (AMR) has transformed from a “silent epidemic” to an urgent global health crisis.
According to a study published in 2024 The LancetBetween 2025 and 2050, 39 million deaths are expected to be directly attributable to AMR.
In a new study published in nature microbiology, Researchers have found its connection with climate change.
Climate change-induced drought is an important but overlooked factor in antibiotic resistance, according to Caltech researchers.
For years, drug resistance has often been attributed to the clinical misuse of antibiotics, but this research highlights an “ecological pathway.”
drought as selective pressure
In the ecological pathway, dry soil is responsible for creating higher concentrations of natural antibiotics in the remaining moisture. Higher concentrations become intolerable for weakened bacteria, allowing antibiotic-resistant strains to flourish and multiply.
Soil-to-Clinic Link
Researchers have found a direct genetic link between human pathogens and soil bacteria after analyzing data from more than 100 hospitals globally. They found that antibiotic-resistant genes in hospitals were 100 percent identical to genes found in local soil.
Various channels such as agriculture, outdoor recreation and inhalation of dust are responsible for transmission.
“The drought is causing similar effects to the overuse of antibiotics in the clinic: They both drive selection for antibiotic resistance,” said Dianne Newman, professor of biology and geobiology at Caltech.
This study highlights that to tackle growing antibiotic resistance around the world, we must also address the dangerous realities of climate change.
