About the Authors

Lisa Hefele

Roles Conceptualization, Data curation, Formal analysis, Investigation, Methodology, Project administration, Software, Supervision, Validation, Visualization, Writing – original draft, Writing – review & editing

lisa.hefele@lih.lu

Affiliations Lao-Lux Laboratory, Institut Pasteur du Laos, Vientiane, Lao PDR, Department of Infection and Immunity, Luxembourg Institute of Health, Esch-sur-Alzette, Grand-Duchy of Luxembourg

Sengdavanh Syphan

Roles Conceptualization, Data curation, Writing – review & editing

Current address: Department of Hygiene and Health Promotion, Ministry of Health, Vientiane, Lao PDR

Affiliation Lao Tropical and Public Health Institute, Vientiane, Lao PDR

Dalouny Xayavong

Roles Conceptualization, Data curation, Writing – review & editing

Current address: National Center for Laboratory and Epidemiology, Vientiane, Lao PDR

Affiliation Lao Tropical and Public Health Institute, Vientiane, Lao PDR

Anousin Homsana

Roles Conceptualization, Data curation, Writing – review & editing

Current address: Lao-Oxford-Mahosot Hospital Wellcome Trust Research Unit, Vientiane, Lao PDR

Affiliation Lao Tropical and Public Health Institute, Vientiane, Lao PDR

Daria Kleine

Roles Conceptualization, Data curation, Writing – review & editing

Current address: Saarland University, Homburg, Germany

Affiliations Lao-Lux Laboratory, Institut Pasteur du Laos, Vientiane, Lao PDR, Department of Infection and Immunity, Luxembourg Institute of Health, Esch-sur-Alzette, Grand-Duchy of Luxembourg

Phetsavanh Chanthavilay

Roles Methodology, Writing – review & editing

Current address: Institute of Research and Education Development, University of Health Sciences, Vientiane, Lao PDR

Affiliation Lao Tropical and Public Health Institute, Vientiane, Lao PDR

Phonethipsavanh Nouanthong

Roles Conceptualization, Data curation, Writing – review & editing

Affiliation Lao-Lux Laboratory, Institut Pasteur du Laos, Vientiane, Lao PDR

Kinnaly Xaydalasouk

Roles Data curation, Writing – review & editing

Affiliation Lao-Lux Laboratory, Institut Pasteur du Laos, Vientiane, Lao PDR

Outavong Phathammavong

Roles Data curation, Writing – review & editing

Affiliation Luxembourg Development Cooperation Agency, Vientiane, Lao PDR

Somxay Billamay

Roles Data curation, Writing – review & editing

Affiliation Children Hospital, Vientiane, Lao PDR

Anonh Xeuatvongsa

Roles Conceptualization, Writing – review & editing

Affiliation Expanded Programme on Immunisation, Vientiane, Lao People’s Democratic Republic

Daniel Reinharz

Roles Conceptualization, Writing – review & editing

Affiliations Lao Tropical and Public Health Institute, Vientiane, Lao PDR, Département de Médecine Sociale et Préventive, Université Laval, Québec, Canada

Antony P. Black

Roles Conceptualization, Funding acquisition, Supervision, Writing – original draft, Writing – review & editing

Affiliation Lao-Lux Laboratory, Institut Pasteur du Laos, Vientiane, Lao PDR

Claude P. Muller

Roles Conceptualization, Funding acquisition, Supervision, Writing – original draft, Writing – review & editing

Affiliations Lao-Lux Laboratory, Institut Pasteur du Laos, Vientiane, Lao PDR, Department of Infection and Immunity, Luxembourg Institute of Health, Esch-sur-Alzette, Grand-Duchy of Luxembourg

Competing Interests

Dr. Nouanthong has been a member of the independent National Immunization Technical Advisory Group in Lao PDR since August 2017. The other authors declared no conflict of interest. This does not alter our adherence to PLOS ONE policies on sharing data and materials.