Rising food and energy prices could kill millions both directly and indirectly, Peter Sands, the executive director of the Global Fund to Fight AIDS, Tuberculosis and Malaria, told.
Oxfam said it expects 263 million people to sink into extreme poverty this year, as soaring inflation has added a cost-of-living crisis on top of Covid.
Beijing authorities were taking a similar approach to Shanghai, where residents have chafed under a months-long lockdown that has denied many people adequate access to food and medical care.
Biden and Yoon also extended an offer of help to Pyongyang, which has recently announced it is in the midst of a Covid-19 outbreak, a rare admission of internal troubles.
The ongoing COVID wave, declared last week, has fuelled concerns over a lack of vaccines, inadequate medical infrastructure and a potential food crisis in the country of 25 million
The rigid strategy to root out virus cases at all costs has wreaked havoc on supply chains, crushed small businesses and imperilled the country's economic goals.