A/chicken/Hong Kong/G9/97 (H9N2) x A/Ann Arbor/6/60 ca (H9N2 G9/AA ca) [clinicaltrials_resource:45972395228038230cfa04758f2484c7]

A/chicken/Hong Kong/G9/97 (H9N2) x A/Ann Arbor/6/60 ca (H9N2 G9/AA ca) [clinicaltrials_resource:45972395228038230cfa04758f2484c7]