Margaret Chan Fung Fu-chun was born on 21 August 1947 in British Hong Kong. Her family roots trace to Shunde in Guangdong province. She did not set out to become a doctor. She first trained as a home economics teacher at Northcote College of Education and taught for a time. When her future husband, David Chan, left for medical studies in Canada, she followed him. At the University of Western Ontario she completed a bachelor’s degree in home economics in 1973 and a medical degree in 1977. She later earned a master’s in public health from the National University of Singapore in 1985 and attended a management program at Harvard Business School in 1991.
Returning to Hong Kong in 1978, she joined the Department of Health as a medical officer in maternal and child health. Promotion came steadily. She became assistant director in 1989, deputy director in 1992, and in June 1994 the first woman to head the Department of Health. She held the post for nine years, spanning the 1997 handover from British to Chinese sovereignty.
Two crises defined her Hong Kong years. In 1997 the first human cases of H5N1 avian influenza appeared. After initial public reassurances that she herself ate chicken daily, she ordered the slaughter of the entire poultry stock, about 1.5 million birds, in three days. The cull stopped further human cases in the territory and became a model for outbreak control, though it drew criticism as excessive. In 2003 SARS struck. Hong Kong recorded 299 deaths. Chan was faulted by the Legislative Council for slow action, over-reliance on information from mainland authorities, and inadequate early communication. An expert committee later attributed many problems to the split between the Hospital Authority and the public health department rather than to her personally. The episode nevertheless damaged her local reputation even as it raised her international profile.
In 2003 she moved to the World Health Organization in Geneva as director of the Department for Protection of the Human Environment. In 2005 she became assistant director-general for communicable diseases and the director-general’s representative for pandemic influenza. After Lee Jong-wook died suddenly in 2006, China backed her candidacy strongly. She was elected director-general in November 2006 and took office in January 2007, the first Chinese national to lead a major United Nations agency. She won a second five-year term in 2012 and served until 2017.
Chan set as her key performance indicators improvements in the health of people in Africa and the health of women. She championed universal health coverage, arguing it was a matter of fairness that should not expire with any particular target year. She pushed tobacco control through the Framework Convention on Tobacco Control and sought better sharing of influenza viruses and access to vaccines. Under her leadership WHO declared the 2009 H1N1 swine flu outbreak a pandemic on 11 June 2009, the first such declaration since 1968. The virus proved milder than feared. Critics accused the organization of crying wolf and of being influenced by pharmaceutical interests. Chan rejected both charges, insisting decisions followed published virological and epidemiological criteria and that commercial considerations never entered her thinking.
The 2014–2016 West African Ebola outbreak brought heavier criticism. WHO was slow to declare a public health emergency of international concern. Chan later acknowledged shortcomings in the organization’s emergency response capacity. The subsequent Zika epidemic in the Americas also tested the agency. During her tenure WHO began an ambitious internal reform program aimed at greater transparency and accountability, though many observers still found the organization cumbersome and overly deferential to member states.
Chan’s relationship with China remained a recurring theme. She had been supported by Beijing from the start. Under her leadership WHO referred to Taiwan as a province of China, increased engagement with traditional Chinese medicine, and aligned some activities with China’s Belt and Road Initiative. After leaving office she praised China’s early response to COVID-19. Defenders said she was a professional civil servant who treated all member states equally; critics argued she helped draw the organization closer to Beijing at the expense of independence.
After stepping down in 2017 she returned to public life in China. In 2018 she became a member of the Standing Committee of the Chinese People’s Political Consultative Conference and president of the Global Health Forum of the Boao Forum for Asia. In 2020 she was appointed founding dean of the Vanke School of Public Health at Tsinghua University in Beijing. She holds honorary degrees and awards including the Order of the British Empire. Forbes once ranked her among the world’s most powerful women.
Chan’s career illustrates both the possibilities and the constraints of international public health leadership. She rose from a teaching diploma and a late decision to study medicine to the highest post in global health. She demonstrated a willingness to take drastic action, as in the Hong Kong poultry cull, and a commitment to equity through her emphasis on Africa and women. At the same time she operated inside a membership-driven organization whose authority depends on the consent of 194 countries. Outbreaks that began under her watch in Hong Kong and later at WHO revealed how quickly new pathogens can travel and how difficult it is to balance scientific caution, political reality, and public communication.
Her later roles at Tsinghua and in Chinese political consultative bodies keep her connected to both technical public health and the political environment in which it now operates. Whether viewed as a skilled administrator who professionalized parts of WHO or as a leader who accommodated great-power interests, Margaret Chan remains one of the most consequential figures in twenty-first-century global health. Her path from a Hong Kong classroom to Geneva and then Beijing traces the shifting geography of influence in an era when pandemics and geopolitics have become inseparable.