The Ensenada Health Services Jurisdiction (JSSE) is calling on residents to clear their yards of standing water, old containers, and debris as warmer months increase the risk of dengue fever and rickettsiosis in the region. JSSE chief Rubén Lucero Ocampo said discarded objects create breeding grounds for the mosquitoes and ticks that carry these diseases.
The agency is coordinating with SEMAR (Mexico’s Navy) and the Ensenada municipal government on prevention efforts across the city, which sits about 85 miles south of San Diego and draws large numbers of American visitors and residents year-round.
Two Diseases, Two Vectors
Dengue fever is transmitted by the Aedes aegypti mosquito, which breeds in small pools of stagnant water. Symptoms include high fever, severe headaches, joint pain, and in serious cases, hemorrhagic bleeding. Ensenada has faced mosquito-borne disease concerns before: in 2017, Mexican officials confirmed local transmission of Zika virus in the city, prompting a California Department of Public Health advisory for travelers.
Rickettsiosis, spread through tick bites, is a separate but equally serious threat in Baja California. The bacterial infection can cause fever, rash, and organ damage if untreated. Baja California has recorded some of the highest rickettsiosis case counts in Mexico in recent years, with the brown dog tick identified as the primary vector.
What Residents Should Do
Lucero Ocampo urged residents to take specific steps to reduce risk. For mosquito control, that means emptying and scrubbing planters, buckets, and water dishes at least once a week. Tarps, old tires, and any container that collects rainwater should be removed or stored upside down. The CESPE (Ensenada’s state water utility) has also applied larvicide to water infrastructure in the past as part of joint efforts with ISESALUD, the state health agency.
For tick prevention, the JSSE recommends checking pets and clothing after time spent outdoors, especially in areas with brush or tall grass. Dogs are common carriers of the brown dog tick and should be treated with veterinary tick-prevention products.
Coordinated Government Response
The JSSE’s campaign comes as health agencies across Mexico ramp up vector-control activities ahead of the summer rainy season, when mosquito and tick populations typically surge. The CDC recommends that local officials conduct community cleanup drives and use public messaging to educate residents about eliminating breeding sites.
Ensenada residents who develop sudden fever, rash, or severe headaches should seek medical attention promptly and mention possible mosquito or tick exposure to their doctor. The original report was published by Ensenada.net.