Received: 9 April 2021
Accepted: 4 July 2021
First Online: 10 July 2021
: Ethical clearance was obtained from the institutional review board of Aklilu Lemma Institute of Pathobiology, Addis Ababa University. Information about the objective of the study, and its possible risks and benefits were explained to the participants or their guardians using the local language. Figure prink blood samples were taken after obtaining written informed consent and/or assent from parents or guardian’s. Confidentiality was maintained throughout the study.
: Not applicable.
: The authors declare that they have no competing interests.