New Zealand marked 100 days without a domestic transmission of the coronavirus today, but warned against complacency as countries like Vietnam and Australia which once had the virus under control now battle a resurgence in infections.

New Zealand’s successful fight against Covid-19 has made the Pacific island nation of five million one of the safest places in the world right now.

New Zealanders have returned to normal life, but authorities are concerned that people were now refusing testing, not using the government contact tracing apps, and even ignoring basic hygiene rules.

“Achieving 100 days without community transmission is a significant milestone, however, as we all know, we can’t afford to be complacent,” Director-General of Health Dr Ashley Bloomfield said, according to Reuters.