Abstract
Background
Routine immunization programs face challenges in settings such as Papua New Guinea: dispersed rural populations, rugged geography, and limited resources for transport and health. Low routine coverage contributes to outbreaks such as measles and the polio that re-appeared in 2018. Diversion of resources to the necessary emergency response can risk further weakening of the routine system. We report on an in-depth local assessment that documented immunization service provision so as to review new national strategy, and consider how emergency polio responses could simultaneously strengthen routine immunization.
Methods
In East New Britain Province, over 2016 and 17, we carried out a cross-sectional assessment of 12 rural health facilities, staff and clients. The study was timed to follow implementation of a new national strategy for strengthening routine immunization. We used interview, structured observation, and records review, informed by theory-based evaluation, a World Health Organization quality checklist, and other health services research tools.
Results
We documented strengths and weaknesses across six categories of program performance relevant to national immunization strategy and global standards. We found a functional immunization service with an operational level of staff, equipment and procedures in place; but one that could reach only half to two thirds of its target population. Stronger routine services require improvement in: understanding of population catchments, tracking the unvaccinated, reach and efficiency of outreach visits, staff knowledge of vaccination at birth and beyond the first year of life, handling of multi-dose vials, and engagement of community members. Many local suggestions to enhance national plans, including more reliable on-demand services, integration of other family health services and increased involvement of men.
Conclusions
The national strategy addresses most local gaps, but implementation and resourcing was insufficient. Emergency polio campaigns could support a stronger routine program by building local planning capacity, identifying new outreach sites, sharing intelligence on local population characteristics, integrating high-demand services and other vaccines, distributing educational materials, and modelling better involvement of trained lay health workers. Long-term strengthening requires a major increase in centrally-allocated resources, however there are immediate locally feasible steps within current resources that could boost coverage and quality of routine immunization.