International warning

Samoa had international health warnings before measles crisis

The warnings undermine the government's argument it could not have prepared for the disease's arrival beyond its response, which included a mass vaccination campaign launched in November.

As early as March, the World Health Organisation and the UN children's agency UNICEF identified low vaccination rates - just 28 percent of Samoa's population had both doses of the measles vaccine last year - as a key risk amid a global resurgence of measles.