Changes

Jump to: navigation, search

Timeline of face masks

112 bytes added, 16:39, 19 September 2020
no edit summary
| 2011 || || || A survey of mask use conducted in Tokyo shows that face masks are worn as protection against infection or to avoid spreading infections to others, but also as a general form of protection and as a sign of respect and responsibility.<ref name="sciencenorway.no"/> || {{w|Japan}}
|-
| 2012 || || || A dense wave of smog in China prompts a large-scale use of masks. The term "PM2.5" begins to enter public awareness, and mask models such as N95 and KN90, which can filter out this fine particulate matter, become highly popular.<ref name="globaltimes.cn"/> || {{w|China}}|| [[File:Shanghai haze in Huangpu Distract 20131206.jpg|thumb|center|200px|Smog in Shanghai, 6 December 2013]]
|-
| 2012 || || || A comparative study by Zhang et al. on a sample size of 56 individuals in Beijing finds that cloth mask use did not significantly decrease the risk of H1N1 infection in health care setting.<ref name="royalsociety.orgww">{{cite web |title=Face masks and coverings for the general public: Behavioural knowledge, effectiveness of cloth coverings and public messaging |url=https://royalsociety.org/-/media/policy/projects/set-c/set-c-facemasks.pdf?la=en-GB&hash=A22A87CB28F7D6AD9BD93BBCBFC2BB24 |website=royalsociety.org |accessdate=12 September 2020}}</ref> || {{w|China}}
62,434
edits

Navigation menu