The child, who hails from Malappuram, was first treated locally, but after his condition deteriorated, he was shifted to Kozhikode, where he is on ventilator support.

This disease-causing variety of amoeba is found in contaminated water and can cause serious problems when it reaches the brain through the nose.

The child was reportedly bathing in Moonniyur lake in Malappuram.

Four members of the child's family are under observation, while district health officials have started identifying people who bathed in the lake in the past few days.

PAM was first reported in 2016 and since then, five cases have been reported in the state, the last of which was from Alappuzha in 2023.

Symptoms of the disease begin with headache, fever and nausea.