translation.en: But it's not one virus, it's four, and the same protection that gives you the antibodies and protects you from the same virus that you had before actually makes you much more susceptible to the other three.
translation.zh: 但是登革热的病毒不止一种，而是四种， 而如果你身体里有了一种登革热病毒的抗体， 抗体会保护你不再被这同一种病毒感染， 然而这种抗体却会让你更容易感染上其他三种登革热病毒。