Mexico: “brain-eating” amoeba detected in Yucatan, six artificial lakes closed
Quick Look
- Mexican authorities detected the presence of the amoeba Naegleria fowleri in six artificial lakes in the Yucatán, a very touristy region, after the death of a water ski instructor in September.
- These lakes, used for water skiing, paddle boarding and kayaking, have been closed.
- The Secretary of Health of Yucatán called for vigilance and medical consultation in the event of symptoms, while specifying that no epidemic has been declared.
AI-generated summary
Why It Matters
The amoeba Naegleria fowleri, known as the "brain-eating" amoeba, causes primary amoebic meningoencephalitis, which is almost always fatal. It develops in warm stagnant fresh water, particularly between 35 and 46°C. Infection occurs when contaminated water enters through the nose.
Mexican authorities have reported the presence of the famous “brain-eating” amoeba in six artificial lakes in a very touristy region of the country, which have been closed, we learned from an official source.
Health workers in the state of Yucatán analyzed the water of six of the nine lakes in Yucatan (southeast), after the death of a water ski instructor who had contracted the amoeba Naegleria fowleri last September, according to the Regional Health Secretariat. These lakes were built for recreational purposes, for water skiing, paddle boarding and kayaking, in shopping centers and luxury residences.
A nasal infection
Yucatán is known for its Gulf of Mexico beaches, resorts and Mayan ruins. This is the first death recorded in this state, also famous for its impressive natural freshwater tanks, known as cenotes (natural wells and cavities with fresh, crystal clear water, formed by the collapse of limestone rock), where authorities have decided to strengthen health surveillance.
Yucatán Health Secretary Alberto Alcocer urged residents to seek immediate medical attention if they may have been in contact with contaminated water. “Finding this amoeba in the environment does not mean that there is an epidemic, nor that the people who visited these places are sick,” said this official in a video published Wednesday evening. “The mechanism of infection occurs when contaminated water (...) enters through the nose,” he explained: “this means that we must continue to act preventively.”
The deceased ski instructor was hospitalized several days before dying of primary amoebic meningoencephalitis, the disease caused by the amoeba. Naegleria fowleri proliferates in stagnant fresh water of lakes, rivers, ponds and hot springs around the world, particularly between 35 and 46°C, according to Mexican health authorities. The brain infections it causes are very rare, but almost always fatal. The government of Yucatán has opened an investigation into the companies responsible for the maintenance and water quality of the first lake where the presence of the amoeba was detected.
What to Watch
AI outlook — possibilities, not facts
Contaminated artificial lakes will remain closed until tests confirm the absence of the amoeba.
Likely · Within weeks
Health surveillance will be strengthened in the natural cenotes of Yucatán due to their popularity and their similarity to environments favorable to the amoeba.
Possible · Within months
Open Questions
- Which companies are responsible for maintaining the first contaminated lake?
- Will water treatment measures be implemented in the other lakes?
- Are there any other suspected cases under investigation?
- Do natural cenotes in Yucatán present a similar risk?
