Puerto Vallarta, Jalisco, October 29, 2026 – Health crews have fumigated and carried out larval control at eight Puerto Vallarta cemeteries ahead of Día de Muertos visits on November 1 and 2.
Personnel from Jalisco’s Health Region VIII treated El Progreso, 5 de Diciembre, Ramblases, Las Lomas, Memorial Park, Las Palmas, El Ranchito and Santo Domingo.
For families preparing to take flowers to a grave, the practical question is what precautions still matter after the health crews have left.
One of the clearest local recommendations concerns the flowers themselves: replace water in vases with damp sand. This lets families decorate graves while avoiding standing water where mosquitoes can develop.
The advice follows earlier inspections of public and private cemeteries. Regional health director Jaime Álvarez Zayas said, “We have completed visits to all cemeteries, both public and private, here in Puerto Vallarta.”
He said personnel had returned to some sites more than once to check places where rainwater accumulated, particularly flower containers. Working with cemetery maintenance staff, crews also treated water basins for mosquito larvae and removed discarded tires and bottles that could hold water.
Those tasks address different parts of the mosquito’s life cycle. The U.S. Centers for Disease Control and Prevention’s explanation of mosquito control describes how removing standing water and controlling larvae help prevent new biting adults from emerging, while adult mosquito treatments reduce mosquitoes already present.
That distinction explains why keeping containers from filling again remains part of prevention after fumigation. A treated cemetery still needs attention to the water that visitors, maintenance work, or subsequent rain may leave behind.
The October 29 report does not provide treatment dates for individual cemeteries or measurements showing how much mosquito numbers declined. It documents preventive work but does not establish the remaining risk at each site.
Visitors can also reduce their exposure during the visit. The CDC’s dengue prevention guidance recommends insect repellent and loose-fitting, long-sleeved shirts and pants. Mosquitoes can bite during daylight as well as at night, so a morning or afternoon cemetery visit still calls for protection.
The regional operation also included cemeteries in Tomatlán, Talpa de Allende, Mascota, Cabo Corrientes and San Sebastián del Oeste, according to the October 29 account.
In Vallarta, the health work accompanies broader cemetery preparations for Día de Muertos, with registered stalls scheduled to trade on November 1 and 2.
For anyone leaving flowers, the final check is straightforward: use the recommended damp sand in the vase and remove unwanted containers that could collect water after the visit ends.
