HDT was founded in 2003 with the intention to partner with communities to develop interventions that improve the health of poor families in Tanzania, including taking care of Most Vulnerable Children. HDT operates at both grass root and national level and in 3 priority regions: Dar es Salaam, Mbeya and Kagera.

The head office is located in Dar es Salaam and with two field offices where one is in Mbeya (Rungwe) and the other one is in Kagera (Ngara). The Mbeya (Rungwe) HDT office was opened in January 2007 and the Kagera (Ngara) opened in March 2007. On its fifth year, HDT has presence in three regions and with steady partnership with Voluntary Service Overseas (VSO) it has also work in Mtwara region under the Capacity Building Program. With partnership with AIHA, it has interventions in Botswana under capacity building program also. 

With its celebration of the 5years in service, HDT is a potent and vibrant organization that continues to learn, succeed with strong drive, and in so doing, expanding its intended impact to better serve its target beneficiaries –People Living with HIV & AIDS, old people and vulnerable household caring for Most Vulnerable Children.