FIG. 1.

Sequential changes of SARS-CoV load in plasma during the course of infection in six patients suspected of having SARS (probable SARS cases) (A to F) (17). SARS-CoV loads in plasma were determined by a real-time RT-PCR assay (14). Day 1 (d1) is the first day of fever. Dashed lines indicate the limit of detection (178 copies/ml of plasma). Hatched bars indicate ribavirin therapy; the closed triangle indicates intubation (in patient ID1).