Funding for this research was provided by:
Internationl Science Programmes (IPICS-ZIM01)
Centre for Emerging and Neglected Diseasess (Unversity of Zimbabwe)
International Foundation for Science (IFS F/3413-03F)
Received: 14 June 2019
Accepted: 27 August 2019
First Online: 6 September 2019
: The study was conducted according to the protocol approved by the Faculty of Science Higher Degrees committee (FSHDC), paper HD/166 of 2016, University of Zimbabwe.
: Not applicable.
: The authors declare that they have no competing interests.