Assertion: tuberculosis's system | /r/CapableOf | become weak
Facets:
value: for some reason
type: CAUSE
Source sentences:
text: Healthy individuals may contract latent TB, but the disease may not become active until months or years later, at a time when the immune system becomes weak for some reason.
text: However, a person with latent TB infection can get sick years later if their immune system becomes weak.