Bengaluru: Issuing a heightened health caution ahead of the seasonal rush to Sabarimala, the Karnataka government on Tuesday released a fresh advisory warning pilgrims about the risk posed by the so-called “brain-eating amoeba,” Naegleria fowleri, after recent cases of Amoebic meningoencephalitis were reported in Kerala.

The advisory, released by the Commissionerate of Health and Family Welfare Services, urges devotees travelling from Karnataka to stay “extremely vigilant” and adopt strict precautions while coming in contact with freshwater during the pilgrimage.

Naegleria fowleri is a free-living amoeba commonly found in warm freshwater sources such as ponds, lakes, stagnant water bodies and poorly maintained swimming pools.

While the organism does not spread from person to person, nor through drinking contaminated water, it can enter the body when water is forcefully inhaled through the nose.

Once inside, it can reach the brain and cause Amoebic meningoencephalitis, a rare but highly fatal infection.

Calling the microorganism “highly virulent,” officials stressed that the risk increases when devotees take ritual baths in natural water bodies along the pilgrimage route.

“Take precautions by using nose clips or holding your nose tightly while bathing in stagnant water during the Yatra to prevent water from entering,” the advisory states, adding that avoiding unnecessary freshwater exposure is strongly recommended.

Pilgrims have also been urged to seek immediate medical attention if they develop any symptoms within a week of water exposure. Warning signs include fever, severe headache, nausea or vomiting, stiff neck, confusion, behavioural changes, or altered mental status.

“Do not ignore these symptoms. Contact the nearest government hospital or doctor for emergency care,” the advisory emphasised.

While Karnataka has not reported any cases so far, the government said the advisory was issued as a precautionary step due to heavy inter-state pilgrim movement and proximity to affected regions in Kerala.

Health teams have been asked to maintain surveillance and keep hospitals prepared for early diagnosis.

Officials reiterated that the infection remains extremely rare but urged pilgrims to “prioritise safety without panic” during the pilgrimage season.