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Israelmore Ayivor

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“En este mundo no existe ni la bondad absoluta ni la maldad absoluta (...) El bien y el mal no son algo estático e inamovible, sino algo que siempre está cambiando de lugar y situación. La bondad puede convertirse al instante en maldad y viceversa. (...) Lo importante es preservar el equilibrio entre ese bien y ese mal en constante movimiento. Inclinándose demasiado por uno de los dos, resulta difícil mantener la moral de la vida real. Sí, el equilibrio en sí mismo es el bien.”

“Recognizing its importance, Aedes aegypti should be studied as a long-term national, regional, and world problem rather than as a temporary local threat to the communities suffering at any given moment from yellow fever, dengue or other aegypti-borne disease. No one can foresee the extent of the future threat of Aedes aegypti to mankind as a vector of known virus diseases, and none can foretell what other virus diseases may yet affect regions where A. aegypti is permitted to remain.”

“Aedes aegypti, which transmits yellow fever, is one of the feeblest species in its ability for flight and it is at once blown away and destroyed when it gets into a breeze. It therefore seldom wanders from the house in which it was bred.”

“The use of vaccine in the control of yellow fever should occupy more or less the same place that typhoid fever vaccine has in the control of typhoid fever. No sanitary authority would desire to substitute typhoid vaccine for the supply of pure water and food, so we must not accept the yellow fever vaccine as a substitute for the elimination of Aedes aegypti. The vaccine provides individual protection for the person who cannot be protected by more general measures.”