Nancy Cox, Pioneering Influenza Researcher and CDC Leader, Dies at 77

Nancy Cox, a pioneering virologist and longtime leader in global influenza research at the Centers for Disease Control and Prevention, has died at the age of 77.

Cox passed away on Thursday, April 23, 2026, from glioblastoma, an aggressive form of brain cancer, as confirmed by Stat News.

Her career at the CDC spanned 37 years, beginning in 1976 when she started working on influenza. She served as director of the Influenza Division from 2006 to 2014, during which time she grew the team from a small branch of 14 scientists to a robust division of over 100 experts.

Under her leadership, the Influenza Division became a global reference center for antiviral resistance and for measuring the transmission of influenza viruses in animal models. Cox also set the standards for measuring immune response in infected and vaccinated people, transforming the science of influenza surveillance and vaccine development worldwide.

In addition to her role at the CDC, Cox served as director of the World Health Organization’s Collaborating Center for Surveillance, Epidemiology, and Control of Influenza from 1992 to 2014. In this capacity, she worked closely with public health officials from countries including Russia, Vietnam, and China, helping to strengthen their capabilities in influenza virology, and surveillance.

Cox played a central role in the annual selection of influenza strains for seasonal flu vaccines, a process critical to global preparedness. According to CDC historical records, she contributed to the scientific foundation for vaccine updates during the 2013–2014 and 2014–2015 seasons.

She was also Chair and Co-Chair of the Scientific Advisory Council of GISAID from 2008 to 2017, where her work was recognized as instrumental to the success of the global initiative promoting open sharing of influenza data.

Throughout her career, Cox authored 278 scientific publications and was known for bridging complex virological data with actionable public health guidance, particularly during flu seasons and the 2009 H1N1 pandemic.

Colleagues remember her as a meticulous scientist and a quiet leader who prioritized collaboration and rigor, avoiding the spotlight while shaping international influenza surveillance networks that informed WHO recommendations used by health authorities in over 100 countries.

She retired from the CDC in December 2014 after nearly four decades of service, leaving behind a transformed infrastructure for global influenza prevention and control.

Nancy J. Cox was born in 1949 in Curlew, Iowa. She earned her bachelor’s degree in Bacteriology from Iowa State University in 1970 and a doctorate in virology from the University of Cambridge in 1975 as a Marshall Scholar.