3 ms·

The Wu Lien-Teh mask is the precursor of KN95 masks, not surgical masks. See this: https://de.m.wikipedia.org/wiki/Datei:How_the_gauze-cotton_mask_should_be_wo

The Wu Lien-Teh mask is the precursor of KN95 masks, not surgical masks. See this: https://de.m.wikipedia.org/wiki/Datei:How_the_gauze-cotton_mask_should_be_worn.jpg https://de.m.wikipedia.org/wiki/Datei:How_the_gauze-cotton_m... Surgical masks offer virtually no (personal) protection against airborne disease and fulfill a completely different purpose.

teleforce 5y ago
Based on the design and capability, I doubt Dr Wu original mask back in the pandemic was even close to N95 mask in filtering the air probably closer to the surgical mask of today, if not worst. The N95 as we know today was invented just recently in 1995[1]. Even with its rudimentary design, Dr Wu's mask had managed to save many lives back then, and in my opinion surgical mask of today will be similar if not better than the original Dr. Wu's mask design. [1]https://en.wikipedia.org/wiki/N95_respirator https://en.wikipedia.org/wiki/N95_respirator
- incrudible 5y ago
  > Based on the design and capability, I doubt Dr Wu original mask back in the pandemic was even close to N95 mask in filtering the air probably closer to the surgical mask of today, if not worst. Surgical masks are not designed to filter air, they are designed to prevent droplets from exiting the mouth and contaminating the surrounding - especially an open wound like you'd have during surgery. Hence, it's called surgical mask. They are loosely worn. The Wu Lien Teh mask was designed to filter air - with the capabilities of the time. It was tightly worn. It would've been a far more effective filter than a modern surgical mask.
  - teleforce 5y ago
    I am not convinced that Dr Wu's mask during the Machurian epidemic is closer to N95 quality than our surgical mask with various ASTM rated level 1, 2 and 3 standards. If you have any credible references with scientific evidences to the actual quality of his original mask, I'd genuinely like to know. Personally I will take any protection that I could wear to mitigate and prevent the virus transmission to and from myself than using nothing, since Covid virus is known to be transmitted thru both airborne and bodily fluids including saliva[1]. Like they always mentioned "every little helps". There is also a popular old saying, "no rattan, roots will do" . [1]https://directorsblog.nih.gov/2021/04/22/study-demonstrates-saliva-can-spread-novel-coronavirus https://directorsblog.nih.gov/2021/04/22/study-demonstrates-...

teleforce 5y ago

Based on the design and capability, I doubt Dr Wu original mask back in the pandemic was even close to N95 mask in filtering the air probably closer to the surgical mask of today, if not worst. The N95 as we know today was invented just recently in 1995[1]. Even with its rudimentary design, Dr Wu's mask had managed to save many lives back then, and in my opinion surgical mask of today will be similar if not better than the original Dr. Wu's mask design. [1]https://en.wikipedia.org/wiki/N95_respirator https://en.wikipedia.org/wiki/N95_respirator

incrudible 5y ago
> Based on the design and capability, I doubt Dr Wu original mask back in the pandemic was even close to N95 mask in filtering the air probably closer to the surgical mask of today, if not worst. Surgical masks are not designed to filter air, they are designed to prevent droplets from exiting the mouth and contaminating the surrounding - especially an open wound like you'd have during surgery. Hence, it's called surgical mask. They are loosely worn. The Wu Lien Teh mask was designed to filter air - with the capabilities of the time. It was tightly worn. It would've been a far more effective filter than a modern surgical mask.
- teleforce 5y ago
  I am not convinced that Dr Wu's mask during the Machurian epidemic is closer to N95 quality than our surgical mask with various ASTM rated level 1, 2 and 3 standards. If you have any credible references with scientific evidences to the actual quality of his original mask, I'd genuinely like to know. Personally I will take any protection that I could wear to mitigate and prevent the virus transmission to and from myself than using nothing, since Covid virus is known to be transmitted thru both airborne and bodily fluids including saliva[1]. Like they always mentioned "every little helps". There is also a popular old saying, "no rattan, roots will do" . [1]https://directorsblog.nih.gov/2021/04/22/study-demonstrates-saliva-can-spread-novel-coronavirus https://directorsblog.nih.gov/2021/04/22/study-demonstrates-...