1 Department of Laboratory Medicine, University of California, 185 Berry Street, San Francisco 94107, CA, USA
2 UCSF-Abbott Viral Diagnostics and Discovery Center, San Francisco 91407, CA, USA
3 Children’s Hospital Colorado and University of Colorado School of Medicine, Aurora, CO, USA
4 California Department of Public Health, Richmond, CA, USA
5 Kaiser Permanente Hospital, Oakland, CA, USA
6 John Muir Hospital, Walnut Creek, CA, USA
7 Department of Medicine, Division of Infectious Diseases, University of California, San Francisco 94107, CA, USA