Assertion: antibody | /r/HasProperty | maintained in recovered patients
Facets:
value: for up to 2 years
type: TEMPORAL
value: for sars
type: TRANSITIVE-OBJECT
Source sentences:
text: For SARS in 2003, antibodies were maintained in recovered patients for up to 2 years, but as the virus disappeared by mid-2004, protection from reinfection was never demonstrated.4