Editorial: El País

• The Nile Virus affected Seville, causing five deaths and 50 infections.
• The Culex mosquito is the transmitter of the virus and it can be prevented using repellents, mosquito nets and by not going out at dawn and dusk.
• One strategy to fight the virus is to fumigate the mosquito larvae in spring with Bt toxin.
• The lower Guadalquivir did not effectively apply the fumigation with Bt toxin.
• Central and local administrations must work together for the prevention and elimination of the virus.

Conclusion: The key lesson learned is that preventing these health problems is easier and more effective than trying to cure the sick afterwards.

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