According to state media, Kim Jong Un's sister blames a COVID 19 outbreak in North Korea on leaflets from South Korea.
The news came after Mr Kim declared victory over coronaviruses and ordered that restrictions imposed in May be lifted.
North Korea has not revealed how many COVID 19 cases have been found in the country.
Since July 29, the nation has reported no new suspected cases despite international aid organisations saying it has limited testing capabilities.
The authoritarian North has used the pandemic to tighten social controls and restore trade hampered by border lockdowns and other restrictions, but he said that while lifting the maximum anti-pandemic measures, North Korea must maintain a steel-strong anti-epidemic barrier and intensify the anti-epidemic work until the end of the global health crisis.
Observers said it may clear the way for the North to conduct a nuclear weapon test for the first time since 2017 and that it may clear the way for the North to conduct a test for the first time since 2017.
KCNA reported that North Korea had a death toll of 74 people, an unprecedented miracle compared to other countries.
North Korea reported a number of people with fever symptoms instead of confirmed cases.
On May 15, the daily cases were more than 392,920, prompting health experts to warn of an inevitable crisis.
Kim's sister, Kim Yo Jong, said the North Korean leader had suffered from fever symptoms and blamed leaflets from South Korea for the outbreak.
She said that even though he was seriously ill with a high fever, he could not lie down for a moment thinking about the people he had to take care of until the end of the anti-epidemic war.
The situation in North Korea was getting worse, not better, because of an absence of independent data, the World Health Organization said last month it believed the situation was getting worse, not better.
North Korea has a declared victory despite no known vaccine outbreak in the country.
North Korean said it relied on lockdowns, homegrown medicine treatments, and what Mr Kim called the advantageous Korean-style socialist system The North said it was running intensive medical checks nationwide, with daily PCR tests on water collected in borderline areas among the measures.
It has been developing new methods to detect the virus and its variants, as well as other infectious diseases, such as monkeypox.