Received: 25 January 2021
Accepted: 10 September 2021
First Online: 9 November 2021
: Ethics approval was obtained from Kenyatta National Hospital and University of Nairobi Ethical Committee (Permit number: KNH-ERC/A/240; permit extension number: KNH/ERC/R/113) and administrative approval research permit obtained from National Commission for Science, Technology and Innovation (Permit: Number NCST/RCD/12A/012A/55) Kenya respectively. Research protocol including blood draw, preparation and analysis were done in accordance with approved guidelines and regulations by the Ethics-Research-Committee. Caregivers who were the respondents for primary study participants gave a written informed consent before commencement of data collection.
: Not applicable.
: The authors declare that they have no competing interests.