Does secondary ultrasound examination increase the sensitivity of the FAST exam in blunt trauma?
A secondary ultrasound of the abdomen significantly increases the sensitivity of ultrasound to detect intra-abdominal injury.
These data provide insight into the frequency and reproducibility of viral escape from CD8(+) T cell responses in human HCV infection, and clarify the combined influence of multiple forces shaping the sequence diversity of HCV and other highly variable pathogens.