Assertion: giardia's host | /r/HasProperty | infected with avirulent strain
Facets:
value: relatively
type: DEGREE
Source sentences:
text: For the asymptomatic carrier state, one must presume that either the host is infected with a relatively avirulent strain that lacks key virulence factors or that host immune and possibly nonimmune defence mechanisms are operating sufficiently to control parasite numbers and render infection subclinical.