New Zealand confirmed its first case of coronavirus on
February 28, well over a month after the United States confirmed its first infection. On March 14, when the country had six cases, Ardern announced that anyone entering the country would need to self isolate for two weeks, which was at the time among the toughest border restrictions in the world. Foreign nationals were banned from entering the country on March 20.
On March 23 -- when there were 102 confirmed cases, and no deaths -- Ardern announced the country was entering "level 3"
lockdown. Non-essential businesses were closed, events and gatherings canceled and schools closed to all children except those of essential workers.