What are Naegleria and why are they of concern Naegleria are free-living amoeba (a microscopic free-living single-celled organism) commonly found in warm freshwater and soil. More than 40 species of Naegleria have been identified, some of which are thermotolerant (heat tolerant) and able to grow at temperatures as high as 46°C. One of the thermophilic species … Continue reading Experiencing Naegleria Challenges? Are you ready for Summer?