in page functions

Good-quality immunisation data is essential to find the children that are missing out on life-saving vaccines.


Credit: Gavi/2017/Asad Zaidi.

Timely, good-quality immunisation coverage data is vital for countries to plan and monitor their immunisation programmes in an effective way. Gavi, the Vaccine Alliance works with WHO, the Global Fund and other agencies to strengthen countries’ health information systems.


Gavi launched a new data strategic focus area (SFA) at the end of 2015, with the aim to improve the availability, quality and use of available immunisation data.

Our support for data is provided through three funding streams:

  • health system strengthening support;
  • targeted country assistance; and
  • strategic investments in targeted, innovative approaches to improve data at the global and/or regional levels.

Collectively, our investments address three key areas:

  • Immunisation delivery, coverage and equity: strengthening the quality of immunisation coverage data to help address bottlenecks.
  • Vaccine-preventable disease (VPD) surveillance: helping countries to strengthen their surveillance systems and use disease data to target and improve immunisation programmes. VPD surveillance systems are also a vital part of ensuring global health security and outbreak preparedness.
  • Vaccine safety surveillance and response: establishing and improving data systems to detect adverse events and implement effective response and communication strategies.

Through the partners’ engagement framework, Vaccine Alliance partners are supporting new ways to use data to inform immunisation programmes. This includes the production of various immunisation coverage and equity analyses as well as targeted support for data improvement plans.


Countries applying for Gavi support to improve access to good-quality immunisation coverage data are required to:

  • conduct annual desk reviews to monitor coverage data;
  • have routine mechanisms in place to independently assess the quality of administrative data. They can use Gavi support to develop a plan, reviewed at the annual joint appraisal, to improve the quality of data over time; and
  • undertake regular population-based surveys to assess immunisation coverage.


More countries meet the data quality benchmark.


Gavi measures data quality by tracking the degree of consistency between available estimates of immunisation coverage.

In 2016, 49% of Gavi-supported countries reported “administrative coverage” (national-level data reported annually by the country itself) within 10 percentage points of “survey coverage” (data collected as part of household surveys, usually carried out every three to five years). This represents an increase of 6 percentage points compared with 2015, and puts us on track to achieve our 2020 target of 53%.

Results for 2017 are still pending and will be available in mid-2018.

>109 million

By the end of 2016, 57 countries had immunised more than 109 million children against pneumococcal disease with support from the Vaccine Alliance.


More facts...

close icon

modal window here