About the Authors

Shinji Saito

Contributed equally to this work with: Shinji Saito, Kaori Sano

Roles Conceptualization, Investigation, Methodology, Resources, Writing – original draft

Affiliations Department of Pathology, National Institute of Infectious Diseases, Shinjuku, Tokyo, Japan, Influenza Virus Research Center, National Institute of Infectious Diseases, Musashimurayama, Tokyo, Japan

Kaori Sano

Contributed equally to this work with: Shinji Saito, Kaori Sano

Roles Conceptualization, Investigation, Methodology, Resources, Writing – original draft, Writing – review & editing

Affiliations Department of Pathology, National Institute of Infectious Diseases, Shinjuku, Tokyo, Japan, Division of Infectious Diseases Pathology, Department of Global Infectious Diseases, Tohoku Graduate School of Medicine, Sendai, Miyagi, Japan

Tadaki Suzuki

Roles Conceptualization, Funding acquisition, Investigation, Methodology, Project administration, Resources, Supervision, Visualization, Writing – original draft, Writing – review & editing

tksuzuki@nih.go.jp (TS); hasegawa@nih.go.jp (HH)

Affiliation Department of Pathology, National Institute of Infectious Diseases, Shinjuku, Tokyo, Japan

Akira Ainai

Roles Investigation, Methodology, Resources

Affiliation Department of Pathology, National Institute of Infectious Diseases, Shinjuku, Tokyo, Japan

Yuki Taga

Roles Investigation, Methodology

Affiliation Nippi Research Institute of Biomatrix, Toride, Ibaraki, Japan

Tomonori Ueno

Roles Investigation

Affiliation Nippi Research Institute of Biomatrix, Toride, Ibaraki, Japan

Koshiro Tabata

Roles Investigation

Affiliation Department of Pathology, National Institute of Infectious Diseases, Shinjuku, Tokyo, Japan

Kumpei Saito

Roles Investigation, Resources

Affiliation Department of Pathology, National Institute of Infectious Diseases, Shinjuku, Tokyo, Japan

Yuji Wada

Roles Investigation, Resources

Affiliation Department of Pathology, National Institute of Infectious Diseases, Shinjuku, Tokyo, Japan

Yuki Ohara

Roles Investigation

Affiliation Department of Pathology, National Institute of Infectious Diseases, Shinjuku, Tokyo, Japan

Haruko Takeyama

Roles Supervision, Validation

Affiliation Department of Life Science and Medical Bioscience, Waseda University, Shinjuku, Tokyo, Japan

Takato Odagiri

Roles Resources

Affiliation Influenza Virus Research Center, National Institute of Infectious Diseases, Musashimurayama, Tokyo, Japan

Tsutomu Kageyama

Roles Resources

Affiliation Influenza Virus Research Center, National Institute of Infectious Diseases, Musashimurayama, Tokyo, Japan

Kiyoko Ogawa-Goto

Roles Investigation, Methodology

Affiliation Nippi Research Institute of Biomatrix, Toride, Ibaraki, Japan

Pretty Multihartina

Roles Resources

Affiliation National Institute of Health Research and Development, Ministry of Health RI, Jakarta, Indonesia

Vivi Setiawaty

Roles Resources

Affiliation National Institute of Health Research and Development, Ministry of Health RI, Jakarta, Indonesia

Krisna Nur Andriana Pangesti

Roles Resources

Affiliation National Institute of Health Research and Development, Ministry of Health RI, Jakarta, Indonesia

Hideki Hasegawa

Roles Funding acquisition, Project administration, Supervision, Writing – review & editing

tksuzuki@nih.go.jp (TS); hasegawa@nih.go.jp (HH)

Affiliations Department of Pathology, National Institute of Infectious Diseases, Shinjuku, Tokyo, Japan, Division of Infectious Diseases Pathology, Department of Global Infectious Diseases, Tohoku Graduate School of Medicine, Sendai, Miyagi, Japan

Competing Interests

National Institute of Infectious Diseases and Nippi, Inc. have filed patents regarding construction and use of tetrameric SIgA (application no. PCT/JP2015/070742). SS, TS, AA, YT, TU, KOG and HH are named as inventors on the application. YT, TU, and KOG are employees of Nippi, Inc.