How a Cambridge-educated physician stopped a deadly epidemic by inventing the modern face mask.
In short: In 1910, a mysterious plague swept through Manchuria with a 99.9% mortality rate. Dr. Wu Lien-teh, a Malayan physician, defied local customs to perform a postmortem, proving the disease was airborne. His invention of a simple, layered face mask became the precursor to the N95 respirator and saved thousands.
Born in Penang in 1879, Wu Lien-teh was the first medical student of Chinese descent to attend the University of Cambridge. After a brilliant academic career, he returned to the Straits Settlements, only to face a two-tier colonial medical system that barred him from top specialist roles. In 1908, he moved to China to lead the Imperial Army Medical College in Tianjin.
The turning point of his career came in 1910 when the Qing court sent him to Harbin to investigate a pneumonic plague outbreak. While experts debated the cause, Wu identified that the plague spread through respiratory droplets. He designed a face mask made of layers of absorbent cotton and gauze. When a prominent French doctor, Gérald Mesny, refused to wear the mask, he contracted the plague and died within days, proving the efficacy of Wu's invention.
Beyond the mask, Wu implemented rigorous public health measures, including quarantine, disinfection, and the controversial but necessary cremation of victims, as the frozen ground made traditional burial impossible. These actions effectively ended the epidemic within months. Wu later chaired the 1911 International Plague Conference and became a foundational figure in modernizing China's medical services, eventually being nominated for the Nobel Prize in 1935.
Wu's influence extended far beyond the 1910 crisis. He founded the Chinese Medical Association, led efforts against the 1920-21 cholera pandemic, and served as the first director of the National Quarantine Service. Despite facing political detention and the destruction of his home during the Japanese occupation, he continued his medical work until his death in 1960 at age 80.
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- Summary by Intellect · source: Wu Lien-teh
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