Integration of a list of tracer medicines in larger facility censuses or surveys would be desirable. This would allow
more regular monitoring and integration with other data on health services, such as infrastructure and human
resources. A list of medicines has been proposed by various disease programmes in WHO for inclusion in the
service availability and readiness assessment methodology (see Annex to this section) (8). It is recommended
that all surveys collect, at a minimum, data on the global list of 14 medicines included in WHO/HAI surveys.
The inclusion of additional medicines should be based on national treatment guidelines, local disease patterns
and other priorities. Where possible, the use of the WHO/HAI methods of collecting, entering and analysing
data are strongly encouraged.