On May 14, 2025, the World Health Organization (WHO) announced significant operational and structural changes in response to substantial funding cuts following the United States' withdrawal from the agency earlier this year. WHO Director-General Tedros Adhanom Ghebreyesus detailed measures including halving the management team, reducing the number of departments from 76 to 34, and implementing a 25% reduction in staff costs. These steps aim to address a proposed 21% budget reduction for the 2026-2027 period, lowering the total budget to $4.2 billion, with only about 60% expected to be funded.

The restructuring also involves closing some offices in high-income countries and strengthening collaboration with other global health bodies to mitigate the impact of budget constraints. Leadership changes include appointing Dr. Chikwe Ihekweazu as Executive Director of the Health Emergencies Program and Dr. Sylvie Briand as Chief Scientist. These adjustments reflect the organization's efforts to adapt to reduced resources while continuing to address essential global health priorities.

The United States, historically the largest financial contributor to the WHO, accounting for approximately 15% to 18% of its budget, announced its withdrawal on January 20, 2025. President Donald Trump cited the WHO's handling of the COVID-19 pandemic, alleged political influence from member states, and disproportionate financial contributions as primary reasons for the decision. The executive order directed the cessation of U.S. funding and the recall of personnel working with the WHO.

The U.S. withdrawal has raised concerns among global health experts about the potential disruption of critical health initiatives. The African Centres for Disease Control and Prevention highlighted that many African countries rely on U.S. investments through the WHO to fund public health programs. The loss of U.S. support could jeopardize efforts to combat diseases such as HIV/AIDS, tuberculosis, and malaria.

In response to the funding shortfall, philanthropist Bill Gates announced plans to donate his entire $200 billion fortune to global health initiatives through the Gates Foundation by 2045, after which the foundation will close. This commitment aims to offset some of the financial gaps left by the U.S. withdrawal and underscores the importance of sustained investment in global health.

The WHO's restructuring efforts and the U.S. withdrawal have significant implications for global health security. Reduced funding and collaboration could hinder the organization's ability to coordinate international responses to health emergencies, increasing the risk of uncontrolled disease outbreaks. The loss of U.S. support may also impact the WHO's capacity to provide technical guidance and resources to low-income countries, potentially leading to a resurgence of preventable diseases.

Despite these challenges, the WHO remains committed to its mission of promoting health, keeping the world safe, and serving the vulnerable. The organization continues to seek alternative funding sources and strengthen partnerships to ensure the continuity of essential health programs worldwide.