Five HIV isolates that had been forgotten in freezers for 2 decades are revealing new details about how and when the virus spread from Africa to Haiti and then exploded on the world scene.

• 已经被人们所遗忘、冰冻了20年已经分离的HIV病毒揭露了新的关于艾滋病从非洲传播到海地接着登上世界舞台的时间和方式的细节。