The news of the death of a 14 year old boy in Kerala has raised several questions. The young boy died due to an infection by a brain eating amoeba. He was under treatment for amoebic meningoencephalitis, a rare brain infection caused by a free-living amoeba found in contaminated waters.
This is not the first such death in Kerala. On May 21, a 5 year old girl had died in Malappuram due to this infection and a few weeks later on June 25, a 13 year old girl had succumbed to this infection in Kannur.
This makes it important to address the most obvious question: How does this pathogen reach the human body?
Amoebic meningoencephalitis is a rare but often fatal infection caused by the amoeba Naegleria fowleri. This amoeba typically enters the human body through the nose when contaminated water containing the amoeba is forcefully sniffed or inhaled.
Once inside the nasal passages, Naegleria fowleri travels along the olfactory nerve fibers to reach the brain. It then causes a severe and rapidly progressing inflammation of the brain tissue, leading to symptoms such as severe headache, fever, nausea, vomiting, and confusion.
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Treatment of this infection is challenging and typically involves antifungal and antimicrobial medications, but the mortality rate remains high.
Naegleria fowleri has been notably found in Kerala, India, primarily due to the environmental conditions that favor its growth and survival. Kerala's tropical climate with high temperatures and humidity creates ideal conditions for the proliferation of this amoeba in freshwater bodies. During the monsoon season, heavy rainfall can lead to increased water levels in lakes, rivers, and ponds, promoting stagnant or slow-flowing water where Naegleria fowleri thrives.
The practice of traditional activities such as bathing and washing in natural bodies of water is common in Kerala. These activities increase the likelihood of exposure to contaminated water sources harboring Naegleria fowleri.