Scientists warn of rising threat from deadly amoebae amid global warming
The organisms can survive extreme conditions, including water treatment
Scientists are raising concerns over the growing global spread of dangerous “free-living amoebae,” warning that these microscopic organisms could pose an emerging threat to public health.
Commonly found in soil and water, amoebae are typically harmless and play a role in maintaining natural ecosystems.
However, certain species, most notably Naegleria fowleri, can cause severe and often fatal infections in humans.
Known for entering the body through the nose and attacking the brain, Naegleria fowleri infections are rare but almost always deadly, prompting increasing concern among researchers as environmental conditions evolve.
Experts say what makes these organisms particularly alarming is their resilience. Unlike many microorganisms, some amoebae can survive harsh conditions, including high temperatures and standard water disinfection methods such as chlorination.
They have also been found in water distribution systems, typically considered safe.
Adding to the concern, researchers warn that amoebae can act as “Trojan horses,” sheltering harmful bacteria and protecting them from treatment processes.
This interaction may contribute to the growing problem of antibiotic resistance, complicating efforts to control infectious diseases.
According to findings highlighted by researchers, rising global temperatures are playing a significant role in the spread of these organisms.
Warmer conditions allow certain species to thrive and expand into regions where they were previously uncommon.
Scientists emphasize that addressing the issue requires a broader, integrated strategy.
A “One Health” approach—bringing together experts in public health, environmental science, and water management—is being recommended to improve monitoring systems and strengthen water infrastructure.
Researchers caution that while the threat remains relatively rare, increased awareness and preventive measures are essential to limit the risks posed by these adaptable and potentially deadly microorganisms.