The researchers used a computer model to simulate the course of HIV infection and estimate the impact on survival of monitoring by viral load, CD4 count or clinical observation.

• 这组科学家使用了一个电脑模型模拟了艾滋病病毒感染的进程，并估计了监视病毒载量、CD4细胞计数或者临床观察对患者生存的影响。