Funding for this research was provided by:
National Institute of Allergy and Infectious Diseases (K23AI125677)
Received: 24 August 2020
Accepted: 15 January 2021
First Online: 21 January 2021
Ethics approval and consent to participate
: The study was approved by the Ethical Review Committee of the Faculty of Medicine, University of Ruhuna (Sri Lanka) and the Duke University Institutional Review Board (US). Written informed consent was obtained from patients 18 years of age and older and from guardians of patients 1–17 years of age, and assent was obtained from patients 12–17 years of age.
: Not applicable.
: The authors declare that they have no competing interests.