CSN News reports that mosquitoes are swarming in Andalucia, Spain earlier than usual after the March storms.

ANDALUCIA has been on high alert following a particularly wet and humid March, which created ideal breeding conditions for mosquitoes that carry disease.

The storms that ravaged southern Spain in March created pools of stagnant, still water in drains.

Experts warn that mosquito populations may explode as early as April, when temperatures rise and eggs in newly formed pools hatch faster. 

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There have been increased mosquito populations in many areas of the area.

The unusual weather patterns this year have prompted their early appearance. Normally, mosquitoes are more prevalent during the summer months. 

The recent increase in temperature has accelerated their biological cycle and facilitated the appearance of massive numbers.

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The Junta de Andalucía has updated its West Nile Virus (WNV) risk map, identifying several western regions at high risk of transmission. 

Sevilla is the main area of danger, followed by Huelva and Cadiz. Malaga and Cordoba are also at risk.

Many other cities in the area are also under surveillance. 

In 2024 the health authorities discovered the virus in mosquitoes in Tarifa. It is now part of the Special Monitoring District.

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West Nile Virus transmission through mosquito bites poses a major health threat to people over 60, as well as those with pre-existing medical conditions, such a diabetes, hypertension and kidney disease. 

It can lead to encephalitis in severe cases. This is an inflammation of the brain that could be life-threatening.

The new law requires that municipalities designated as high risk implement comprehensive plans including measures to reduce the mosquito population and minimise virus transmission risks.

Health authorities recommend residents across Andalucía take preventative measures: install screens on windows and doors; place vinegar containers or lemon halves at strategic points, as their smell repels mosquitoes; use mosquito-repellent plants like citronella; set up diffusers with eucalyptus and lemon essential oils; and create homemade traps using warm water, brown sugar, and yeast. 

Antihistamine creams are recommended by pharmacists, since mosquito bites may cause severe allergic reactions.

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Local authorities stress that in order to minimize environmental impact, widespread fumigation must be delayed until temporary water accumulations have receded. 

Residents are encouraged to remove standing water from their property to reduce mosquito breeding areas.

As temperatures continue to rise across Andalucía in the coming weeks, the situation calls for heightened vigilance to mitigate what could become a significant public health concern across southern Spain.