Changes

| 1910 || {{w|Pneumonic plague}} || || "In 1910, During an epidemic of pneumonic plague strikes in {{w|Manchuria. Appointed by the Chinese court to head anti-plague efforts}}, the Penang-born, Cambridge-educated Malaysian physician Wu Lien-Teh (Wu Liande) teh argues that the disease is transmitted through airborne contact. To prevent its spread, he and develops masks to be worn by medical personnel and the general public."<ref name="bloomberg.comss"/> "The practice of wearing face-masks to prevent disease can be dated back to the 1910-11 Manchurian epidemic in China. It was Wu Lien-teh, a Cambridge educated Chinese doctor who described the mask as a ​‘prophylactic apparatus’ that could be worn by all to protect themselves from the plague. "<ref name="indiabioscience.orges">{{cite web |title=The history and science of mask-wearing |url=https://indiabioscience.org/columns/general-science/the-history-and-science-of-mask-wearing |website=indiabioscience.org |accessdate=12 September 2020}}</ref> ". China has had This marks the beginning of an ethic of wearing masks in China during public-health emergencies since the outbreak of the pneumonic plague in 1910".<ref name="theatlantic.comdsa">{{cite web |title=Face Masks Are In |url=https://www.theatlantic.com/politics/archive/2020/04/america-asia-face-mask-coronavirus/609283/ |website=theatlantic.com |accessdate=13 September 2020}}</ref> "Those masks widely adopted by public health officials in Manchuria in 1910 left no special impression on the region afterwards"<ref name="We share what we exhale">{{cite web |title=We share what we exhale |url=https://www.the-tls.co.uk/articles/a-short-cultural-history-of-mask-wearing-essay-jordan-sand/ |website=the-tls.co.uk |accessdate=17 September 2020}}</ref> || {{w|China}} || [[File:Plague Workers Mukden, Manchuria, 1882-ca. 1936 (imp-cswc-GB-237-CSWC47-LS8-045).jpg|thumb|center|200px|Plague workers in {{w|personal protective equipment}}]]