@minnahelp @ToshiAkima @NjbBari3 @H_S_E @NIOSH We should be advocating to make fit testing more affordable and accessible to all. Not all N95s are created equal; everyone has a different face size/shape. In fact, one study found that 54% of study particip
@ghhughes @safe_breathe @ToshiAkima @masknerd @sri_srikrishna A study of 500 fit-tests performed on 50 participants by Tong Ji Univ is illuminative. It has extensive data about the user's face size/shapes. "N95" alone is not enough, it is essential to chec
Worth noting this isn't an issue with KF94s in particular but is common across many earloop masks & respirators. Even headband N95s have been found to suffer similar problems. These studies highlight the importance of fit testing. https://t.co/8exNC0g
@MacnealChad aha tks for that. but lay off the jew thing please. apparently the US N95 has no standard for inward leakage. KN95s & everybody else is <8%. This article, however, indicates that actual usage stats suck if people aren't taught how t
@JuliaLeeAuthor @CCriadoPerez Unfortunately: "Currently, respirator fit test panels used in China and most other countries were developed by Los Alamos National Laboratory (LANL) in 1978, based on U.S. Air Force anthropometric surveys conducted in 1967 and
@KinderKindWorld @KarlFelsman @billbirtles @smh 1) Facemasks with KN95 stnd fit Chinese facial dimensions may not suitable 4 Europeans; 2) Follow the instructions properly; 3) Be responsible, stop spreading fake news n misinfo bef thorough investigation;
N95 filtering facemasks "are not shaped to fit Chinese faces." (@PLOSone) http://t.co/Zt29Fd2C0l via @chinamedicine @Adampasick @lilkuo
MT @MyHealthBeijing: Fascinating study of masks: huge variation of effectivess on different faces. http://t.co/Tz72npgpsw
Fascinating study of masks: huge variation of effectivess on different faces. No one size fits all! http://t.co/MxyxdPxhVo
@MyHealthBeijing @pabischoff interesting, @chinamedicine picked up on this study a month or two ago - http://t.co/UEf4EO01PH
N95 filtering facemasks "are not shaped to fit Chinese faces." (@PLOSone) http://t.co/Zt29Fd2C0l via @chinamedicine @Adampasick @lilkuo
N95 filtering facemasks "are not shaped to fit Chinese faces." (@PLOSone) http://t.co/Zt29Fd2C0l via @chinamedicine @Adampasick @lilkuo
Not good news for H7n9 control: N95 face masks don't fit Chinese faces, almost all fail infection transmission tests http://t.co/yyVAnZpPnA"
RT @chinamedicine Bad news for H7n9 control: popular face masks on Chinese market don't fit,most fail infection tests http://t.co/kfpScAx4h3
Why do respirators fit poorly in China? Masks were designed with US Air Force facial measurements of caucasians. http://t.co/2jSXJTWOht
Face masks for air pollution in China didn't fit half the subjects in a new study. Most couldn't tell. http://t.co/2jSXJTWOht @limlouisa