We are in the midst of Covid19 outbreak and like to share an interesting covid 19 case trajectories graph for mask wearing. Singapore has just announced the MCO starting next Tuesday and the government will be distributing the reusable mask to the community. It's interesting to see the changes from disposable mask that is not environmental friendly as well as we need workers to work to throw away the potential bacteria left behind the mask. Anyone can share any research on this?
Dear Dr. P C Lai,
I am a researcher, unfortunately in another sector and I do not have the appropriate skills to help you but the graph shown seems to me very significant ....
Good job and best regards.
Pierluigi Traverso (Genoa, Italy)
you may be interested in the book:
Reusability of Facemasks During an Influenza Pandemic
(free pdf download available at https://www.nap.edu/catalog/11637/reusability-of-facemasks-during-an-influenza-pandemic-facing-the-flu)
When dealing with facemasks I get it is needed to quantify the filtering effectiveness for different pourpouses; just to have an idea:
https://www.snpambiente.it/2020/03/27/test-di-arpa-lazio-sullefficienza-delle-mascherine/
(sorry, it is in Italian..hope you can use some translator to grasp the meaning)
Concerning the mask in BFE.jpg I did not get into details, but I notice it cite antimicrobial features, which I guess are not relevant for covid19, as it is a virus, not a bacteria
A Danish experiment has just started. 6000 people participate - half of them using a mask in public and the other half without. During the 30 days the participants will test themselves and the result will be found on May 11
Using face masks in the community - Reducing COVID-19 transmission from potentially asymptomatic or pre-symptomatic people through the use of face masks. Stockholm: ECDC; 2020 Apr 8.
Yes, there are people publishing this kind of research already
Effectiveness of Surgical and Cotton Masks in Blocking SARS–CoV-2: A Controlled Comparison in 4 Patients Ann Intern Med.2020. DOI: 10.7326/M20-1342
Reusable masks is a good idea. Please consider wettability charecterstics of virus against mask materials.
Only N95 masks are proper for blocking SARS–CoV-2 spreading.
I think it is too early to tell and all depend on the type of mask you wear and on the frequency of wearing the mask. I think wearing the same mask for the full day without cleaning it or sterilizing it can be dangerous since it will collect germs and withou conscious you will touch it. We should have graphical data about all cases to be on the safe side. Till then, just wear it and clean it every 3 hrs
Follow ing the WTO protocols ( distancing etc...) and wearing face masks will reduce the risks considerably. There are countries that have applied this suceesfully.
Yes, using mask can flatten the infection curve, because the Mask can potentially block the droplets which have been sheded from infected person during sneezing/coughing/laughing
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Thanks for sharing. It will be nice to give comments on the youtube page for us to test to pull the information from there.
https://www.youtube.com/watch?v=BgJzTKXE1hg
By the way, we have this novel technology for Covid19 travel policy and please give your feedback in the yourtube page as well.
https://www.youtube.com/watch?v=uc_JjBmiEhM
Your support is most appreciated!
Thanks a lot.
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