Dr. Susan Monarez was confirmed as the 21st Director of the Centers for Disease Control and Prevention (CDC) on July 29, 2025, in a 51-47 Senate vote, becoming the first director to require Senate confirmation under a 2023 law. As a microbiologist and biosecurity expert, Monarez faces a CDC grappling with staff cuts, budget slashes, and public trust issues. For Americans seeking insight into her leadership, here’s everything you need to know about Dr. Susan Monarez, her vision, and the challenges ahead in 2025.
Who Is Dr. Susan Monarez?
Dr. Susan P. Coller Monarez, born in 1974 or 1975, is a health scientist with over 20 years of federal government experience, now leading the CDC as its first non-physician director in over 70 years. Her academic and professional background includes:
- Education: Earned a Ph.D. in microbiology and immunology from the University of Wisconsin–Madison in 2003, focusing on infectious disease technologies for low- and middle-income countries. Her dissertation explored trypanosome regulation in Trypanosoma brucei rhodesiense infections. She completed postdoctoral research at Stanford University School of Medicine, advancing infectious disease solutions.
- Career Highlights: Served as Deputy Director of the Advanced Research Projects Agency for Health (ARPA-H), leading AI and health technology initiatives. Held roles at the Department of Homeland Security, White House Office of Science and Technology Policy, and National Security Council, focusing on biosecurity, pandemic preparedness, and antibiotic resistance.
- CDC Tenure: Appointed Principal Deputy Director and Acting Director in January 2025, then nominated for permanent director by President Donald Trump on March 24, 2025, after the withdrawal of Dr. Dave Weldon due to vaccine skepticism concerns.
X posts, like @CDCgov’s announcement, praise her “decades of distinguished experience in health innovation, disaster preparedness, global health, and biosecurity.”
Monarez’s Vision for the CDC
Confirmed on July 29, 2025, Monarez aims to refocus the CDC on its core mission: preventing, detecting, and responding to infectious diseases and emerging threats. Her priorities include:
- Restoring Public Trust: Addressing perceptions of political bias, as noted by Trump on Truth Social, by emphasizing transparency and evidence-based decisions.
- Modernizing Data Systems: Upgrading health data infrastructure to combat outbreaks like measles (300+ cases in Texas, New Mexico, and Oklahoma as of March 2025) and bird flu.
- Supporting Vaccines: Monarez firmly stated, “Vaccines save lives,” during her June 25, 2025, Senate hearing, distancing herself from Health Secretary Robert F. Kennedy Jr.’s vaccine skepticism. She supports the Advisory Committee on Immunization Practices (ACIP), despite Kennedy’s controversial replacement of its 17 members.
- Fluoride Endorsement: Affirmed the safety of fluoridated water for oral health, countering Kennedy’s directive to change CDC guidance.
However, her alignment with Trump’s “Make America Healthy Again” agenda, which shifts chronic disease programs (e.g., obesity, smoking cessation) to other HHS divisions, has sparked debate. Critics like Sen. Bernie Sanders argue she hasn’t sufficiently opposed Kennedy’s cuts or anti-vaccine moves.

Challenges Facing Monarez
Monarez inherits a CDC in turmoil, with a 40% budget cut proposed for 2026 and a third of its staff lost since January 2025, per Rep. Rosa DeLauro’s office.
- Staffing and Morale: Employees report low morale and describe Monarez as a “placeholder” with minimal communication, avoiding all-hands meetings.
- Controversial Directives: As Acting Director, she oversaw the removal of LGBTQ+ and transgender health data from the CDC website and delayed the Morbidity and Mortality Weekly Report, raising concerns about political compliance.
- Public Health Threats: She faces a measles outbreak, bird flu spread to animals, and criticism over Kennedy’s downplaying of measles risks.
Despite this, supporters like Dr. Georges Benjamin of the American Public Health Association praise her data-driven approach and infectious disease expertise.
Why Monarez’s Leadership Matters
As the first Senate-confirmed CDC Director, Monarez’s role is pivotal for U.S. public health:
- Infectious Disease Focus: Her expertise aligns with urgent needs, like managing measles and bird flu outbreaks, critical after events like the Manhattan shooting highlight safety concerns.
- Navigating Politics: Her ability to balance Trump’s agenda with scientific integrity will shape public trust, especially after Kennedy’s controversial moves.
- Global Impact: With experience in international health policy, Monarez can strengthen the CDC’s global reputation, historically a leader in disease prevention.
X sentiment, like @DrNeilStone’s post calling her a “normal” choice over “anti-scientific quacks,” reflects cautious optimism among health experts.
Tips for Following CDC Updates
- Check Official Sources: Visit cdc.gov for Monarez’s latest guidance on outbreaks and vaccines.
- Stay Informed: Follow @CDCgov on X for real-time updates.
- Engage Locally: Contact state health departments for regional health alerts, especially in outbreak areas like Texas.
- Support Public Health: Advocate for CDC funding via nami.org or local representatives to counter budget cuts.
Final Thoughts: A New Chapter for the CDC
Dr. Susan Monarez steps into a challenging role as CDC Director in 2025, balancing infectious disease priorities with budget cuts and political pressures. Her confirmation on July 29, 2025, marks a new era for an agency vital to U.S. and global health, especially after tragedies like the Manhattan shooting highlight the need for robust public health systems. Visit cdc.gov for updates, and share your thoughts on X with #CDCDirector or in the comments—what’s your hope for Monarez’s leadership?
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