"A major test for a major disease - it just doesn't come along very often."

The number of cases is relatively low compared with major diseases.

Most people living in Haiti are at high risk for major infectious diseases.

Thus, cancer is a major disease affecting the population of Canada.

These include several species that cause major diseases in humans.

The race is on to find, and patent, those genes with a role in major diseases.

And so it went with all the major infectious diseases.

Some patients are known to be "problems" because of behavior changes that often accompany major diseases.

For the most part, they can avoid major diseases by following this blood type diet.

Leprosy once was considered a major disease on the island.