With the withdrawal of the U.S. from the World Health Organization (WHO), the United Nations-backed agency has lost its top donor.

Helping compensate for the funding shortfall is the Novo Nordisk Foundation, which has pledged to provide up to 380 million Danish kroner ($58 million) from this year to 2028.

“WHO plays a unique role in the global health ecosystem, providing normative guidance, monitoring diseases, building country capacity for resilient health systems and supporting learning and evidence,” Mads Krogsgaard Thomsen, CEO of the Novo Nordisk Foundation, said in a release.

The nonprofit foundation, which awards grants in health, sustainability and the life science ecosystem, holds 77% of the votes and 28% of the shares in pharma giant Novo Nordisk through Novo Holdings.

The commitment comes during the WHO’s World Health Assembly pledging event in Geneva. Tuesday, the organization reported that it had raised an additional $170 million from “world leaders.”

China revealed that it has pledged $500 million to help support the WHO through 2028, which would make it the world’s top donor, replacing the U.S., according to The Washington Post.

“The world is now facing the impacts of unilateralism and power politics, bringing major challenges to global health security,” China’s vice premier Guozhong Liu said Tuesday in Geneva, according to the Post.

Also during the fundraising event, the WHO’s participant nations approved a 20% increase in membership dues in endorsing the organization’s 2026-27 budget of $4.2 billion. The adjustment came on top of a 20% increase in contributions from member nations as part of the 2024-25 budget, the WHO said.

The WHO, long reliant on large contributions from a “small set of traditional donors,” changed its funding structure in 2022, with members agreeing that membership dues would account for half of the organization’s core budget by the 2030-31 cycle.

The WHO added that it recently downsized its 2026-27 budget from $5.3 billion to $4.2 billion “due to financial constraints.” It was notable that the amount of the decrease was similar to the $1.28 billion figure that the U.S. contributed to the WHO in 2022-23.

Shortly after his inauguration, U.S. President Donald Trump signed an executive order that initiated the U.S.’ departure from the WHO. The order claimed the organization mishandled COVID-19, failed to adopt “urgently needed reforms” and did not show independence from “inappropriate” political influence of WHO members.

The order also complained the WHO demands “unfairly onerous payments” from the U.S. compared to other countries, like China, with larger populations.

Public health experts condemned the move, stressing that it leaves U.S. agencies like the Centers for Disease Control and Prevention and the National Institutes of Health without crucial surveillance data and will complicate future efforts to prevent pandemics.

Tuesday in Geneva, in a prerecorded video message, Department of Health and Human Services Secretary Robert F. Kennedy Jr. urged other countries to work with the U.S. outside of the WHO.

“We want to free international health cooperation from the straitjacket of political interference by corrupting influences of the pharmaceutical companies, of adversarial nations and their proxies,” RFK Jr. said in the video.