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The Namibia Population-based HIV Impact Assessment (NAMPHIA) 2017

The Ministry of Health and Services is leading the NAMPHIA survey in collaboration with the Namibia Statistics Agency (NSA) and the Namibia Institute of Pathology (NIP). The survey is supported by the United States President’s Emergency Plan for AIDS Relief (PEPFAR), through the U.S. Centers for Disease Control and Prevention (CDC).

The goal of NAMPHIA is to examine the current distribution of the HIV epidemic and assess the impact of Namibia’s prevention, care and treatment response across all 14 regions of Namibia. 


NAMPHIA will measure:

  • The rate of new HIV infections in Namibia;
  • HIV prevalence estimates by region; and
  • The effectiveness of HIV treatment as measured by viral load suppression among people living with HIV and on ART by region.


This will be the first time that population-based information about prevalence of HIV in infants and children will be collected on a national scale. The survey will help people learn about their health by providing HIV testing and results to participants. People who already know their HIV status are encouraged to participate as the survey services include other tests to assess disease progression and/or treatment response (e.g., CD4 and viral load testing) in the convenience of their own home. NAMPHIA will also provide information about HIV prevention and treatment to all participants.


The Government and its partners will use the data collected to inform policy decisions and resource allocation, improve health service delivery and make progress towards eliminating HIV by 2030.  

The partners involved are the Namibia Statistics AgencyNamibia Institute of PathologyICAP at Columbia University and the University of California San Francisco (UCSF)`s Global Programs for Research and Training in Namibia.

Support and technical assistance is provided by PEPFAR through CDC.

Key Facts about NAMPHIA

  • Participation in the survey is voluntary. Survey responses and test results are confidential.
  • Survey teams will visit approximately 12,000 randomly-selected households throughout the country. Approximately 26,000 people aged 0 - 64 years will be part of the survey.
  • All households in Namibia have equal chance of being randomly selected for the survey.
    • Those who choose to participate will receive HIV counseling and testing in their home. Results are returned the same day.
    • HIV testing is done through collecting a small amount of blood from the arm, finger, or heel.
  • Individuals who test positive for HIV will also receive CD4 and viral load testing and will be referred to their nearest health care facility if they are not already receiving support.
  • The NAMPHIA project also includes technical assistance at the national level to strengthen data collection systems, enhance laboratory infrastructure and strengthen local human resource capacity.


Data on the current HIV situation in Namibia

  • HIV prevalence is 14% in Namibia, one of the highest prevalence rates in the world (Namibia Demographic Health Survey, 2013).
  • Mother-to-child-transmission rate in 2015 was estimated at 4.1%. This is expected to decrease to less than 2% by the 2020 (Spectrum, 2016). 
  • The number of facilities dispensing ART increased from 10 in 2002 to more than 300 in 2016.
  • In 2016, Namibia implemented the World Health Organisation guidelines for “test and start” where any person who tests positive for HIV infection is immediately started on ARV therapy. This expands on previous policy where all HIV positive mothers were given lifelong ARV therapy.


About the PHIA Project

The PHIA Project is a five-year, multi-country initiative funded by the U.S President’s Emergency Plan for AIDS Relief (PEPFAR) through the United States Centers for Disease Control and Prevention (CDC) and led by ICAP at Columbia University. The PHIA Project consists of household-based population surveys that will collect information related to HIV in approximately 15 African countries.