About the Authors

Beatrix Kapusinszky

Affiliations Blood Systems Research Institute, San Francisco, California, United States of America, Department of Laboratory Medicine, University of California San Francisco, San Francisco, California, United States of America, Department of Viral Diagnostics, National Center for Epidemiology, Budapest, Hungary

Tung G. Phan

Affiliations Blood Systems Research Institute, San Francisco, California, United States of America, Department of Laboratory Medicine, University of California San Francisco, San Francisco, California, United States of America

Amit Kapoor

Affiliation Center for Infection and Immunity, Columbia University, New York, United States of America

Eric Delwart

delwarte@medicine.ucsf.edu

Affiliations Blood Systems Research Institute, San Francisco, California, United States of America, Department of Laboratory Medicine, University of California San Francisco, San Francisco, California, United States of America

Competing Interests

Eric Delwart and Amit Kapoor have a patent pending on cosaviruses covering nucleic acid sequences and derived proteins. This does not alter the authors' adherence to all the PLoS ONE policies on sharing data and materials.

Author Contributions

Conceived and designed the experiments: ED BK TP AK. Performed the experiments: BK TP AK. Analyzed the data: ED BK. Wrote the paper: ED BK.