Common Myths About Dengue, and What Really Works in Prevention

Much is said about how to avoid dengue, but misconceptions still create a false sense of security. In reality, these beliefs often fail to provide real protection. Below, we debunk some of the most common myths and reinforce what truly matters.

Myth 1: “Dengue only occurs where there’s trash, debris, or sewage.”

Why it’s a myth: The main factor isn’t garbage—it’s standing water, even in small amounts. Aedes aegypti thrives in plant saucers, bottle caps, gutters, vases, and everyday containers found in any home. Contrary to popular belief, the mosquito does not breed in polluted sewage water; it prefers clean water, such as that found in water tanks.

Fact: Weekly inspections are essential—check gutters, air-conditioning trays, flower pots, drains, water tanks, and forgotten objects in the yard.

Myth 2: “I use repellent, so I’m 100% protected.”

Why it’s a myth: Repellent helps with individual protection but does not eliminate the risk when breeding sites exist nearby.

Fact: Repellent is part of the strategy, but it does not replace removing standing water, installing protective screens, maintaining outdoor areas, and monitoring potential breeding spots.

Myth 3: “If there’s no high fever, it’s not dengue.”

Why it’s a myth: Dengue can present with mild or atypical symptoms—or even without noticeable fever. Believing that only severe symptoms indicate dengue delays diagnosis and proper case reporting.

Fact: Watch for body pain, fatigue, rashes, eye pain, and nausea. When in doubt, seek medical care and avoid self-medication.

Myth 4: “Prevention is just about eliminating standing water.”

Why it’s a myth: Removing water is crucial, but other measures are also necessary. Even with regular home inspections, Aedes aegypti continues to circulate in urban areas—public spaces, drainage points, vacant lots, and hard-to-reach places.

Fact: Effective prevention combines household actions with environmental strategies. Alongside routine checks, technologies like Biotraps help capture and reduce mosquito populations in areas beyond human reach, enhancing continuous prevention.

Misinformation weakens prevention and opens the door to new outbreaks. Accurate information reduces risks, strengthens collective care, and saves lives.