Health authorities in Yucatán ordered four more artificial lakes in Mérida closed after laboratory testing confirmed Naegleria in the water. The latest action covers sites at La Isla, Cabo Norte, Parque Ecologico de Oriente, El Centenario Zoo and La Plancha, expanding a response that began after a fatal medical emergency tied to an artificial lake at Plaza La Isla.
The timing matters because the new findings came after Health Services of Yucatán completed a wider check of nine urban water features across the city. Officials said the rest of the inspected sites tested negative for the deadly amoeba, and they stressed that none of the nine is meant for swimming or recreational bathing because all function as ornamental urban features. The water sports instructor who contracted the infection after mainly wakeboarding in contaminated water remains the case that pushed the citywide review into motion, and readers searching now want to know how far the closures will spread.
Health Services of Yucatán said physical barriers and warning signs are being installed at the affected lakes, while municipal, federal and private operators begin chemical sanitation protocols. The surrounding facilities at the parks and zoological grounds remain open, officials said, even as access to the water itself is restricted. At Animaya, boat tours continue because visitors do not come into direct contact with the water, a detail that underlines the way the response is being aimed at the lakes rather than at the public spaces built around them.
That split between closed water and open grounds is the part visitors are likely to notice first. A family can still enter the parks, but they cannot approach the lakes, and health officials are treating the water features as the only contaminated element rather than the sites as a whole. The remaining question is not whether the areas will reopen in some form, but how long it will take health authorities and research teams to clear the restricted lakes after specialists from the Autonomous University of Yucatán and the Center for Research and Advanced Studies complete the remediation work.
Officials have said the amoeba is transmitted only when contaminated water is forced high into the nasal cavity, not through casual contact, splashes or drinking tap water. They also said all monitored individuals who may have been exposed in the weeks after the fatal case completed observation without symptoms, and no other human infections have been reported. The city’s next step is a technical one, and the public’s next concern is simple: which of the still-negative sites will stay that way after clearing begins.
