https://ss.one.un.org/south-sudan-boosts-polio-immunization-coverage-on-the-world-polio-day-to-keep-the-disease-at-bay.html 2017-10-30T10:03:37+00:00 monthly 0.2 https://ss.one.un.org/who-and-the-ministry-of-health-strategize-for-the-next-five-years-to-improve-the-immunization-system-in-south-sudan.html 2017-10-30T10:01:02+00:00 monthly 0.2