https://www.bbc.com/news/articles/cvg9men89yvo

The World Health Organisation has declared a polio outbreak in Papua New Guinea and called for an "immediate" vaccination campaign.

Samples of the highly infectious virus were found in two healthy children during a routine screening in Lae, a coastal city in the country's north east.

Less than half of the country's population are immunised against the potentially deadly disease, which is close to being wiped out but has recently resurfaced in some parts of the world.

(snip)

The latest cases were found to be carrying a virus strain genetically linked to one circulating in Indonesia. Papua New Guinea shares a border with Indonesia's easternmost Papua province.

(snip)