Received: 2 April 2020
Accepted: 12 September 2020
First Online: 18 September 2020
Ethics approval and consent to participate
: This study received approval from the Medical Research Coordinating Committee (MRCC) of the Tanzanian National Institute for Medical Research (certificate # NIMR/HQs/R.8a/Vol. IX/1338) and the Ethics Review Committees of Kilimanjaro Christian Medical University College (KCMUCo) in Moshi, Tanzania (CRERC # 818). It was also approved by the Walter Reed Army Institute of Research (WRAIR) in the US. The Tanzania Peoples Defense Forces (TPDF) headquarters and individual study camps granted permission prior to study commencement. Participants were recruited on voluntary bases after signing an informed consent.
: Not applicable.
: Authors declare no competing interests.