About the Authors

Jew Ochola Ouma

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

ochojew@yahoo.com, jew.ouma@gmail.com

Affiliations KEMRI/USAMRD-K, Walter Reed Project, Kisumu, Kenya, Department of Biological Sciences, Masinde Muliro University of Science and Technology, Kakamega, Kenya

David H. Mulama

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

Affiliation Department of Biological Sciences, Masinde Muliro University of Science and Technology, Kakamega, Kenya

Lucas Otieno

Roles Conceptualization, Investigation, Writing – original draft

Affiliation KEMRI/USAMRD-K, Walter Reed Project, Kisumu, Kenya

John Owuoth

Roles Investigation, Supervision

Affiliation KEMRI/USAMRD-K, Walter Reed Project, Kisumu, Kenya

Bernhards Ogutu

Roles Conceptualization, Investigation, Supervision

Affiliation KEMRI/USAMRD-K, Walter Reed Project, Kisumu, Kenya

Janet Oyieko

Roles Conceptualization, Formal analysis, Investigation, Methodology, Supervision, Writing – review & editing

Affiliation KEMRI/USAMRD-K, Walter Reed Project, Kisumu, Kenya

Jackson C. Korir

Roles Supervision, Writing – original draft, Writing – review & editing

Affiliation Department of Biological Sciences, Masinde Muliro University of Science and Technology, Kakamega, Kenya

Peter Sifuna

Roles Methodology

Affiliation KEMRI/USAMRD-K, Walter Reed Project, Kisumu, Kenya

Valentine Singoei

Roles Project administration

Affiliation KEMRI/USAMRD-K, Walter Reed Project, Kisumu, Kenya

Victorine Owira

Roles Methodology, Project administration

Affiliation Africa Clinical Research Management, Nairobi, Kenya

Stacey Maureen Okallo Gondii

Roles Project administration

Affiliation KEMRI/USAMRD-K, Walter Reed Project, Kisumu, Kenya

Ben Andagalu

Roles Investigation, Writing – original draft

Affiliation KEMRI/USAMRD-K, Walter Reed Project, Kisumu, Kenya

Walter Otieno

Roles Conceptualization, Resources, Supervision, Writing – original draft

Affiliation KEMRI/USAMRD-K, Walter Reed Project, Kisumu, Kenya

Competing Interests

Author VO is an employee of Africa Clinical Research Management but this company did not have any additional role in the study design, data collection and analysis, decision to publish, or preparation of the manuscript. The specific roles of this author are articulated in the ‘author contributions’ section. This does not alter our adherence to PLOS ONE policies on sharing data and materials.