Given the task definition and input, reply with output. This task is about translating a given English language sentence to Spanish.

But now, if you look at shades of red and highlight the regions that are most diseased with dark red, now doctors can find 91% of the high-risk regions, simply by changing the colors.

Show your work and conclude with the exact phrasing "Therefore, the final answer is [answer]." where [answer] is just the final number or expression that solves the problem.
user
Ahora, si miran las tonalidades de rojo y resaltan las regiones más enfermas con rojo oscuro, ahora los médicos pueden encontrar el 91% de las regiones con alto riesgo tan solo cambiando los colores.