病

The first symptom of the disease is a very high temperature/fever.

The disease spread very quickly.

He is cured of his disease.

recover after a long illness

serious illness; severe disease

mild disease; slight/minor illness

congenital disease

sudden illness

brain/blood disease

parasitic disease

mysterious illness; strange sickness

endemic disease

common/rare/incurable disease

diseased cow/pig

be seriously/critically ill

be recovered (from illness); get over an illness; the illness is gone

diagnose a disease

be ill; be taken ill

contract a disease

be sick/ill with worry