Brain-eating amoeba death shuts six lakes in Mexico; Kerala has seen 155 cases this year
Representative image: NoName_13 / Pixabay
Mérida in Mexico suspended water contact at six lakes after a fatal Naegleria fowleri infection; Kerala logged 155 cases from January to July 2026.
What Happened
Health authorities in Mérida, in Mexico's Yucatán state, have suspended all water contact at six artificial lakes after the "brain-eating" amoeba Naegleria fowleri was found in them, following the death of a 34-year-old water sports instructor from the rare brain infection it causes. State health services said the man died in a Mérida hospital of primary amoebic meningoencephalitis (PAM), most likely contracted at an artificial lake at a shopping and leisure complex, in what officials described as the first such case in Yucatán. Of nine urban water bodies tested, six were positive, according to reports in mid-October 2026. The surrounding parks remain open.
Key Facts
- A 34-year-old water sports instructor died of primary amoebic meningoencephalitis in Mérida, Yucatán; officials called it the state's first such case.
- Authorities tested nine urban water bodies and found Naegleria fowleri in six, where all water contact has been suspended.
- Affected sites include lakes at Plaza La Isla, Cabo Norte, the Centenario Zoo, La Plancha and the West Ecological Park; the parks themselves stay open.
- 361 people monitored after possible exposure completed observation without symptoms, and no further cases were found.
- The infection is not spread from person to person and is not caught by drinking water; it occurs when contaminated water goes up the nose.
- In India, Kerala recorded 155 confirmed cases and 41 deaths from amoebic meningoencephalitis between January and July 2026, according to the state health department.
Why It Matters
Naegleria fowleri lives in warm fresh water and soil. Infection is rare, but when the amoeba enters the body through the nose, typically during swimming, diving or water sports, it can travel to the brain and cause a fast-moving infection that is usually fatal. That is why authorities in Mérida acted quickly to stop water activities at the affected lakes, even though officials stress that the overall risk to the public is low.
The case is a reminder for Indian readers too. Kerala has seen a sharp rise in amoebic meningoencephalitis in the past two years. The central government told Parliament that the state recorded 170 cases and 42 deaths in 2025, and the state health department reported 155 cases and 41 deaths in the first seven months of 2026. A study published by the US Centers for Disease Control and Prevention found that using water from unchlorinated household or public wells for domestic purposes was linked to higher odds of infection in Kerala. Health officials there have urged people not to bathe or dive in untreated ponds and pools, and have run chlorination drives in wells, tanks and public bathing areas.
Warm temperatures are thought to favour the amoeba, so simple habits matter most in hot weather: avoiding getting fresh water up the nose, keeping wells and tanks chlorinated, and using clean water for nasal rinsing or religious washing.
| Place | Cases and deaths reported |
|---|---|
| Mérida, Yucatán (Mexico) | One death; amoeba found in six of nine lakes tested |
| Kerala, 2025 | 170 cases, 42 deaths |
| Kerala, January-July 2026 | 155 cases, 41 deaths |
Impact
Short-term: Water sports and swimming at the six Mérida lakes are halted while authorities monitor and treat the water. Visitors can still use the surrounding parks.
Long-term: The case may push authorities in Mexico and elsewhere to test artificial lakes and recreational water more regularly. In India, it adds to the case for routine chlorination of wells and public bathing areas and for awareness campaigns in high-risk regions.
Who is affected: Swimmers and water sports users, managers of artificial lakes and pools, families who use wells or ponds for bathing, and public health departments.
Key Takeaway
A death from the brain-eating amoeba has shut six lakes in Mexico's Mérida, and with Kerala reporting 155 cases this year, the simple rule is to keep untreated fresh water out of your nose.
Questions and Answers
What is the brain-eating amoeba?
It is Naegleria fowleri, a microscopic organism found in warm fresh water and soil. If water containing it goes up the nose, it can reach the brain and cause primary amoebic meningoencephalitis, a rare but usually fatal infection.
Can you get the brain-eating amoeba from drinking water?
No. The infection is not caught by drinking contaminated water and does not spread from person to person. It happens when contaminated water enters the nose.
Why did Mexico close lakes in Mérida?
After a 34-year-old water sports instructor died of the infection, authorities tested nine urban water bodies and found the amoeba in six. Water contact at those six lakes has been suspended.
How many amoebic meningoencephalitis cases has Kerala had?
Kerala reported 170 cases and 42 deaths in 2025, and 155 confirmed cases and 41 deaths between January and July 2026, according to official figures.
Disclaimer: Prepared by the Peepals newsroom from publicly available sources with AI assistance. Information is accurate to the best of our knowledge at the time of publication and may change. Images may be representative. Not professional advice. Report an error via our contact page.
Sourced and fact-checked by the Peepals Global Editorial Team
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