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Population-Based HIV Impact Assessment

Considerable progress has been made in bringing an end to the HIV/AIDS epidemic in Africa. To finish the job, it is necessary to assess the evolving nature and extent of the epidemic and adjust resource priorities and program policies to ensure the greatest impact.

Working in partnership with national ministries of health across Africa, Ciheb has been conducting population-based HIV impact assessments (PHIAs) in countries supported by PEPFAR. These assessments are providing critical information about the status of HIV/AIDS. The surveys also build capacity by strengthening the workforce and provide the infrastructure needed to design, conduct, analyze, and disseminate results. PHIA surveys measure national and regional progress toward meeting UNAIDS' 90-90-90 goals and help to refocus resources where needed.

Ciheb worked alongside the Nigerian Ministry of Health and National Agency for the Control of AIDS in completing the 2018 Nigeria HIV/AIDS Indicator and Impact Survey (NAIIS). The survey found that the HIV prevalence was lower than previously thought, allowing the country to refocus its services to the areas of greatest need to control the HIV epidemic. 

Fieldwork for PHIAs in Botswana and Zambia will begin mid February, with more countries in the planning stage. See our individual PHIA country pages below for more information.


The Zambia Ministry of Health, in partnership with Ciheb, is conducting the nation's second PHIA called the ZAMPHIA 2020. 




The 2018 Nigeria HIV/AIDS Indicator and Impact Survey provided vital information on the status of the HIV/AIDS epidemic in Nigeria.



The Botswana Ministry of Health an Wellness, in partnership with Ciheb, is conducting the nation's fifth PHIA called the BAIS V. 




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