A teacher takes the body temperature of a schoolgirl before entering Primary School in Pyongyang. (AP)

North Korea reported zero fever cases for the seventh consecutive day on Friday, according to state media, adding that everyone who had become ill since the country confirmed its first Covid-19 infections had recovered.

The isolated country, which has maintained a rigid coronavirus blockade since the start of the pandemic, announced an Omicron outbreak in the capital Pyongyang in May and activated a "maximum emergency epidemic prevention system".

Every day since, state media has reported the official number of cases, deaths, treatments, and recoveries, with leader Kim Jong Un putting himself at the forefront of the government's response.

In the case of reports, North Korea refers to "fever patients" rather than "Covid patients," owing to a lack of testing capacity as a result of the unilateral US sanctions imposed on the Asian country.

"No new fever cases were reported during the past week and all those receiving treatment have recovered across the country," official North Korean news agency KCNA reported Friday.

"The overall anti-epidemic situation of the DPRK has entered a definite phase of stability," the report added.

The country will continue to strengthen its monitoring of "new COVID-19 sub-variants and various diseases," and will be able to mobilize medical workers "in the event of a crisis," it said.

It is worth noting that North Korea has recorded nearly 4.8 million infections since late April, with only 74 deaths, for an official fatality rate of 0.002 percent.

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