New Zealand reported 28 new cases of Covid-19 on Friday, a big drop compared to the last few days, as authorities said the country was breaking the chain of transmission of the highly infectious Delta variant of coronavirus.

Authorities said 27 new cases were in Auckland and one was in Wellington. Friday's numbers were lower than 49 new cases reported on Thursday and 75 the day before.

"While the fall is encouraging, we are mindful...