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Naegleria fowleri outbreak and water safety in Yucatán

Updated 6 times since CLSTR started tracking revisions of this situation.

What changed

2026-09-22 19:59 UTC → 2026-10-03 20:14 UTC · added removed

Health authorities in Yucatán, Mexico, are investigating the death of a 34-year-old man following a probable diagnosis of primary amebic meningoencephalitis. The patient, a water sports instructor, died on September 8 after experiencing severe neurological deterioration while being treated at the IMSS General Regional Hospital No. 12 in Mérida. Following laboratory testing, the Institute of Diagnosis and Epidemiological Reference (InDRE) confirmed that the man died from meningoencephalitis caused by Naegleria fowleri, commonly known as the ‘brain-eating amoeba’. The microorganism was detected in water samples taken from the artificial lake at Plaza La Isla. In response, the Yucatán State Government suspended all operations at the lake. The company responsible for the lake, responsible, Wake Club Fornelos Yucatán, has been was fined approximately 2.1 million pesos (18,000 UMAs) for sanitary irregularities. Inspections revealed irregularities, including a lack of cleaning programs, the presence of mold and biofilm, deficient water circulation, and an absence of chlorine. The facility remains closed until the company completes sanitation processes and provides maintenance logs and laboratory evidence that the water meets safety parameters. Authorities identified that hundreds of people were exposed to the contaminated water. While many have been discharged, approximately Approximately 148 individuals, including 48 percent children, remain under medical surveillance. In light of the incident, the The Yucatán Ministry of Health has launched a expanded its sanitary investigation into to other local water bodies, including such as La Plancha, Centenario, Cabo Norte, Animaya, and the Parque Ecológico del Poniente. Residents who have had contact with water In response to the incident, the Government of Yucatán is developing a regulatory proposal for artificial lakes used for recreational activities. Through the Inter-institutional Table for the Formation and exhibit fever, headaches, or neurological changes Installation of the State Commission for Safe Water, authorities and the private sector are urged working to seek medical attention at Hospital O’Horán. establish criteria for water quality monitoring, sanitation, and filtration systems to prevent microbiological and physicochemical risks.

Versions

  1. 2026-10-03 20:14 UTC Naegleria fowleri outbreak and water safety in Yucatán
  2. 2026-09-22 19:59 UTC Naegleria fowleri outbreak and water safety in Yucatán
  3. 2026-09-20 18:22 UTC Naegleria fowleri outbreak and contamination in Yucatán
  4. 2026-09-20 04:05 UTC Naegleria fowleri outbreak and contamination in Yucatán
  5. 2026-09-18 23:59 UTC Naegleria fowleri outbreak and contamination in Yucatán
  6. 2026-09-15 22:43 UTC Naegleria fowleri outbreak in Yucatán
  7. 2026-09-14 21:13 UTC Naegleria fowleri outbreak in Yucatán

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