President Donald Trump’s decision to exit the World Health Organization means the U.N. agency is losing its biggest funder.

World Health Organization chief says agency already cutting back on hiring and travel with Trump withdrawal set to hit funding.

Tania Cernuschi, a WHO staff member of 10 years who has worked on improving vaccine access, said she thought of the campaign when she could not sleep after Trump's announcement.

In this April 15, 2020 file photo, the logo and building of the World Health Organization (WHO) headquarters in Geneva, Switzerland.

The World Health Organization said Friday it was reviewing its priorities ahead of the withdrawal of its largest donor the United States, noting the agency provides vital services to protect against health threats.

The World Health Organization is drawing up a list of reasons why the U.S. should remain in the WHO for its own good, two sources familiar with the process told Reuters, as part of an attempt by its supporters to lobby incoming President Donald Trump.

Public health experts say the United States’ departure could cripple the WHO’s operations or leave an opening for China to assume greater control over the agency.

By Patrick Wingrove, Jennifer Rigby and Emma Farge NEW YORK/GENEVA (Reuters) - The United States will leave the World Health Organization, President Donald Trump said on Monday, saying the global health agency had mishandled the COVID-19 pandemic and other international health crises.

The World Health Organization said on Thursday that over 2,000 people have been wounded by fighting in and around Congo's city of Goma and 45 people have died, citing unnamed reports.

If the U.S. withdraws funding and support from WHO, critical programs that support the survival of women and children will be at risk.

As one of the world’s largest funders of global health, America’s step back may curtail efforts to provide lifesaving health care and combat deadly outbreaks, especially in lower-income countries without the means to do so alone.