Received: 7 October 2019
Accepted: 10 May 2020
First Online: 20 May 2020
Ethics approval and consent to participate
: The study was approved by the Institutional Review Board of Medicine and Health Science College of Hawassa University. Written informed consent was obtained from index cases or parents or head of the household for children and adolescents < 18 years for information gathering during household visit.
: Not applicable.
: The authors declare that they have no competing interests.