Viruses are considerably smaller than cells, so that probably plays a part in damage. Though maybe we should study the effects on DNA and organelles within cell

Viruses are considerably smaller than cells, so that probably plays a part in damage. Though maybe we should study the effects on DNA and organelles within cells. Also, the body regularly damages itself in attempts to eliminate infections. It then can heal. Ultrasound might damage other parts of the body, but it might not be worse than what the infection itself causes.