North Korea said on Friday it was achieving "good results" in its fight against its first confirmed COVID-19 outbreak, as the number of people with fever symptoms rose past 2 million.

A wave of COVID-19 infections, which North Korea first confirmed last week, has fanned worry about a lack of medical resources and vaccines in the isolated country heavily sanctioned for its nuclear weapons program.

North Korea has not responded to offers from its old enemies, South Korea and the United States, to send help, a South Korean official said.