Vaccine and Infectious Disease Division, Fred Hutch, 1100 Eastlake Ave E, E4-100, Seattle, WA, 98109, USA. jgolob@fredhutch.org.|Vaccine and Infectious Disease Division, Fred Hutch, 1100 Eastlake Ave E, E4-100, Seattle, WA, 98109, USA.|Department Laboratory Medicine, University of Washington, Seattle, WA, USA.|Vaccine and Infectious Disease Division, Fred Hutch, 1100 Eastlake Ave E, E4-100, Seattle, WA, 98109, USA.