Assertion: smallpox's virus | /r/Causes | serious complications
Facets:
value: for people with impaired immune systems
type: TRANSITIVE-OBJECT
Source sentences:
text: This vaccine has functional virus in it which improves its effectiveness but, unfortunately, causes serious complications for people with impaired immune systems (for example chemotherapy and AIDS patients, and people with eczema) and is not yet considered safe for pregnant women.