Photo: The World Health Organisation
In Papua New Guinea, the World Health Organisation says the country's polio immunisation rollout is ongoing.
PNG declared an outbreak of the virus in May after two children were confirmed to have it in their systems.
However, the country's official polio case count is one.
This is a four-year-old boy from Lae who suffered paralysis from the virus.
According to the WHO, an individual is only counted as a polio case if they exhbit polio symptoms like paralysis.
A number of instances without symptoms have been reported.
A WHO spokesperson said the first phase of the national vaccine rollout is complete, with the second due to begin in mid-October.
Earlier this month, WHO's Dr Ananda Amarasinghe urged people to get their children vaccinated, particularly as the country's immunisation rates among children had declined to below 50 percent.
"The overall routine vaccine coverage, not only for the polio, measles, hepatitis B, tetanus - all routine immunisation coverage was below 50 pecent.," he said.
"That is the real risk we have seen in Papua New Guinea.
"If you [have] 50 percent coverage, that means you [have] 50 percent of children that are unprotected."
The cumulative effects of that posed huge risk, he said.
For example, when 50 percent of the birth cohort was unprotected every year, that eventually rolled into almost half of the population being unprotected overall, Dr Amarasinghe said.
