Mosquitoes Increase In Los Cabos After Heavy Rains: A Look at Dengue Risk & How To Stay Protected

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Travelers in Los Cabos right now will notice a predictable side effect of the recent late-season rains: a noticeable increase in the mosquito population. More standing water in the arroyos and on the ground creates ideal breeding conditions for these pests, a normal part of the seasonal cycle in Baja.

While the annoyance of a few extra bites is a given, it understandably raises concerns for travelers about mosquito-borne illnesses like Dengue fever.

Here at The Cabo Sun, we’re cutting through the noise to give you a real, on-the-ground look at the current situation, the innovative steps local authorities are taking, and a simple, pro-level guide to staying safe and comfortable.

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The Big Picture: A Proactive, Not Reactive, Response

First, let’s put the situation in perspective. While Los Cabos has been a focus for health officials this year, the latest data from the Baja California Sur Health Secretariat shows that the overall number of Dengue cases across the entire state is actually lower than during the same period in 2024.

The key takeaway for travelers is that authorities are not just aware of the seasonal increase in mosquitoes; they are responding with a multi-faceted and highly modern approach to control the population before it becomes a widespread problem.

• Preventative Fumigation: Health brigades are actively conducting targeted fumigation campaigns in residential and rural areas to reduce the number of adult mosquitoes.
• The “Wolbachia Method”: In a cutting-edge public health initiative that has already proven successful in La Paz, authorities have begun releasing special mosquitoes in Los Cabos that carry the Wolbachia bacteria. This amazing natural bacteria prevents mosquitoes from being able to transmit the Dengue virus to humans, effectively turning them into a dead-end for the illness.

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The Real Risk for Tourists: Low, But Not Zero

It’s crucial to understand that your risk as a tourist staying in a well-maintained, oceanfront resort is significantly lower than in other areas. The constant ocean breezes at most resorts are a powerful natural deterrent for mosquitoes. However, no place is completely immune, and taking a few simple, common-sense precautions is the smartest way to ensure a bite-free vacation.

The bottom line is that an increase in mosquitoes after the rains is a temporary and normal part of the season. With local authorities actively working to control the population and a few simple precautions on your part, you can confidently enjoy a safe, comfortable, and beautifully green vacation in Los Cabos.