C. Sandy Ministry of Health and Child Care, TB Unit, Harare, Zimbabwe
G. Shambira University of Zimbabwe, Department of Primary Health Care Sciences, Family Medicine, Global and Public Health Unit, Harare, Zimbabwe gshambira@aafenet.net
A. Chadambuka University of Zimbabwe, Department of Primary Health Care Sciences, Family Medicine, Global and Public Health Unit, Harare, Zimbabwe achadambuka1@yahoo.co.uk
T.P. Juru University of Zimbabwe, Department of Primary Health Care Sciences, Family Medicine, Global and Public Health Unit, Harare, Zimbabwe jtsitsi@afenet.net
 N.T. Gombe African Field Epidemiology Network, Harare, Zimbabwe
M Tshimanga