Answer: Free-living amoeba
Notes: Acanthamoeba, a free-living amoeba, is now a public health concern in Kerala causing eye (keratitis) and brain infections (amoebic meningoencephalitis). Acanthamoeba is a free-living amoeba found in water, soil, dust, swimming pools, hot tubs, and drinking water systems. It can also exist in humidifiers and heating, ventilation, and air conditioning (HVAC) systems. It causes infections in brain, skin, eyes, and sinuses. It enters through cuts, wounds, inhalation, or contact lens use.
