In December 1831, his wife died of a tropical disease.

Because of his foreign travel, the doctors thought he had a tropical disease.

I heard tell you had one of them tropical diseases.

A rare tropical disease, the first of its kind in Britain.

As many patients were suffering from tropical diseases, the hospital was also used for medical research.

Later they left the island again, because some of their troops had died from tropical diseases.

That you were not in Africa to study tropical diseases?

But tropical diseases kept the number of whites well under 10,000 until about 1740.

The last two days he had been reading his medical texts on tropical diseases.

He retired to England a broken man, his wife and children dead of tropical disease.