North Korea said on Sunday a total of 42 people had died as the country began its fourth day under a nationwide lockdown aimed at stopping the impoverished country’s first confirmed Covid-19 outbreak.

State news agency KCNA said the country was taking “swift state emergency measures” to control the epidemic, but there is no sign that Pyongyang was moving to accept international offers of vaccines.

Overall North Korea has reported 820,620 suspected cases, with 324,550 still under medical treatment, KCNA said.