New Zealand's Prime Minister Jacinda Ardern speaks during a press conference in Wellington, New Zealand, on March 31, 2020. More COVID-19 tests would be conducted in New Zealand, with the criteria for receiving a test being expanded, Prime Minister Jacinda Ardern said on Tuesday. (Photos: Xinhua)

New Zealand's Prime Minister Jacinda Ardern speaks during a press conference in Wellington, New Zealand, on March 31, 2020. More COVID-19 tests would be conducted in New Zealand, with the criteria for receiving a test being expanded, Prime Minister Jacinda Ardern said on Tuesday.

New Zealand's Prime Minister Jacinda Ardern speaks during a press conference in Wellington, New Zealand, on March 31, 2020. More COVID-19 tests would be conducted in New Zealand, with the criteria for receiving a test being expanded, Prime Minister Jacinda Ardern said on Tuesday.