An unidentified plague did occur in 1535-39 with high mortality.

In the early years, about 1,000 cases per year were recorded, with a high mortality rate (more than 30%).

For the first four or five months, there is a very high mortality, he said, and no one knows why, despite considerable research.

There is probably high mortality, especially for young males, during this time.

It can have severe complications and high mortality despite treatment.

However, women of color who fracture their hips have a higher mortality.

International trade usually causes a high mortality rate during transit, between 30% and 90%.

It was outlawed in 1790 due to high mortality among players.

The high mortality of the people who live in the Ghetto plays a terrible part.

The high mortality made it very difficult to maintain an experienced workforce.