Wu Lien-teh

The epidemic began in autumn 1910 near Manzhouli on the Chinese–Russian frontier and travelled east and south through the railway network to Harbin, Changchun, Mukden, and communities beyond Northeast China. Early cases were associated with tarbagan marmot hunters and the fur trade, but the surviving record does not identify a single index case or a simple chain from one animal to the entire epidemic. Historians place the death toll between about 40,000 and 60,000. “Manchuria,” used in much of the contemporary and later English-language literature, is an exonym for a region then also described administratively as China’s Three Eastern Provinces. ²

Recent plague research had given physicians a powerful model centred on rats and fleas. In Hong Kong and India, however, clinicians had also observed plague pneumonia. The dispute in 1910 was therefore not whether lung disease could accompany plague, but whether this particular epidemic was being sustained chiefly by infected rodents or by direct transmission between people. That distinction redirected control from rat destruction towards patients, contacts, rooms, rail passengers, and the breath and sputum of the sick. ^{3 6}

Those most exposed were often migrant labourers from Shandong who hunted, handled furs, travelled in crowded third-class carriages, or slept in packed inns. Contemporary official and medical records repeatedly called these men “coolies.” The word is retained here only when discussing the sources: it is a degrading colonial category that collapsed different kinds of labour and helped turn poor Chinese migrants into a blamed population. Wu’s own photographs and reports documented essential burial workers and drivers, but also reproduced this classed way of seeing epidemic danger. ⁶

Wu was born Ng Leen Tuck in Penang, then part of Britain’s Straits Settlements, to a Taishan-born father and a Penang-born Hakka mother. He attended Penang Free School and entered Emmanuel College, Cambridge, on a Queen’s Scholarship in 1896. Clinical training at St Mary’s Hospital and postgraduate work in bacteriology and tropical medicine placed him inside British imperial medical networks without giving him equal access to their careers: colonial authorities offered him only a subordinate medical appointment on returning to Malaya. ¹

In Kuala Lumpur he researched beriberi at the Institute for Medical Research, then opened a practice in Penang. He also campaigned against the colonial opium trade and helped convene an anti-opium conference at Ipoh in 1906. In 1908 he accepted a post at the Imperial Army Medical College in Tianjin and adopted the Mandarin form Wu Lien-teh. These experiences matter because his later public health was never simply “Western medicine brought to China”: it was produced by a Straits Chinese physician moving among colonial institutions, overseas-Chinese reform networks, and the late-Qing state. ^{1 10}

Face coverings already had histories in surgery, industrial and therapeutic respirators, and earlier plague work. During the Manchurian epidemic more than ten mask designs from different sources circulated, including Japanese, French, and Chinese forms. Wu promoted a cheap pad of cotton wool enclosed in gauze, with divided tails tied around and over the head to hold it over the nose and mouth. Its importance was the attempt to make face protection reproducible, portable, and widely usable in hospitals, house inspections, transport, and corpse handling. ^{6 12}

The mask belonged to a system, not a stand-alone cure. It was paired with shorter exposure, distance, isolation, ventilation where practicable, disinfection, protective clothing, and routines for putting on, removing, cleaning, or destroying contaminated material. Contemporary researchers debated design and efficacy; later laboratory work found that some tightly bandaged “Mukden” masks leaked or fitted poorly. Wu’s model was influential and the conference recommended a simple gauze-and-cotton pad, but it was not tested or certified like a modern disposable respirator. Calling it “the first N95” projects a later standard backwards. ^{4 6}

Wu’s later account cast the French physician Gérald Mesny as the sceptic who rejected respiratory protection, entered a plague hospital unmasked, and died days later. Mesny’s death is documented, but the vivid confrontation—including a racial insult—comes from Wu’s autobiography nearly half a century after the event. Historian Christos Lynteris treats it as part of the mask’s heroic origin story rather than neutral proof that one death instantly converted all doubters. ⁶

Russian authorities controlled the Chinese Eastern Railway and Japan controlled the South Manchuria Railway zone. Both powers could present their sanitary administrations as evidence that China was unable to govern the region. Qing officials therefore treated epidemic control as a defence of territorial authority as well as a means of preventing death. Wu’s bacteriological diagnosis gave the state a way to designate individual cases and contacts as a mobile chain of infection—a change that historian Sean Hsiang-lin Lei links to the state’s adoption of the category chuanranbing, or infectious disease. ^{3 2}

The burdens were unequal. Police and soldiers conducted house-to-house inspections, confined suspected contacts, controlled tickets and railway movement, and enforced cremation and disinfection. Poor migrants living in crowded lodging were both at high risk and especially exposed to detention, stigma, and loss of work. Historian Cheng Hu therefore describes “quarantine sovereignty” as a response to foreign pressure that also generated serious social conflict; it cannot be labelled simply progressive because it contributed to containment and state-building. ⁸

Resistance was not just ignorance of germ theory. Families feared separation, invasive searches, hospitals from which few patients returned alive, interference with bodies, and officials empowered to close movement and destroy property. Some objections rested on funerary duties; others responded to material danger and distrust. Recognising these reasons does not deny the lethality of pneumonic plague. It restores the perspective of people upon whom an emergency medical system acted. ^{8 6}

From 3 to 28 April 1911, delegates invited by the Qing government met in Mukden, now Shenyang. Wu presided over sessions on epidemiology, bacteriology, pathology, treatment, and prevention; Richard P. Strong of the American delegation later edited the 483-page proceedings. The meeting endorsed direct human transmission as the principal means of epidemic spread, recommended respiratory protection for those exposed to cases, and called for permanent hospitals, contact accommodation, public education, and further investigation of tarbagan plague. ^{4 5}

The conference was collaborative but not politically neutral. Chinese organisers used it to demonstrate that Northeast China could produce knowledge rather than merely receive foreign intervention. Delegates also brought the authority and rivalries of imperial laboratories, railways, and governments. The published report is invaluable evidence of what participants presented and provisionally accepted; as an official, edited record of a state-sponsored meeting, it does not transparently capture every local experience or settle retrospective priority claims. ^{3 4}

Wu and his contemporaries used terms such as “airborne,” “droplet,” and “inhalation” while working out transmission from clinical observation, cultures, post-mortems, and exposure histories. The Mukden communiqué linked infection chiefly to close proximity and time near a patient and described bacilli in sputum droplets. It did not possess today’s distinctions among droplet, aerosol, and airborne precautions, nor did it establish the performance of masks by modern standards. ⁵

Current medical knowledge identifies pneumonic plague as lung infection caused by Yersinia pestis. Person-to-person spread can occur when someone in close contact inhales infected respiratory droplets. Prompt antibiotics can cure plague; no effective antibiotic treatment existed during the 1910–11 epidemic. This present-day clarification explains the historical stakes and is not personal medical advice. ¹³

Wu gave a clear transmission argument institutional force. That achievement depended on assistants, Chinese and foreign physicians, laboratory and hospital workers, local officials, police and soldiers, railway authorities, volunteers, burial teams, and residents who complied, negotiated, resisted, or protected one another. It also depended on emergency powers that imposed severe costs on people with the least room to avoid them.

Remembering only the mask obscures the public-health system that followed; remembering only the “plague fighter” obscures contested evidence and coercion. Wu’s historical importance is strongest when neither is hidden: he was a consequential physician and organiser whose work helped establish Chinese authority in bacteriology and international health, while also demonstrating how epidemic medicine can join care, surveillance, class judgment, and state power.