4 ms·

This should help make it clear: https://science.sciencemag.org/content/sci/368/6498/1422/F1.large.jpg https://science.sciencemag.org/content/sci/368/6498/1422/F

by mike_d 5y ago

This should help make it clear: https://science.sciencemag.org/content/sci/368/6498/1422/F1.large.jpg https://science.sciencemag.org/content/sci/368/6498/1422/F1.... Masks do more to protect others than they do you. Which is why we are safest when everyone wears a mask.

busymom0 5y ago
Unless we are talking about fitted N95 masks, CDC used to say the opposite even about transmission to others: "There is limited evidence for their effectiveness in preventing influenza virus transmission either when worn by the infected person for source control or when worn by uninfected persons to reduce exposure." https://www.cdc.gov/eid/article/26/5/19-0994_article https://www.cdc.gov/eid/article/26/5/19-0994_article > Disposable medical masks (also known as surgical masks) are loose-fitting devices that were designed to be worn by medical personnel to protect accidental contamination of patient wounds, and to protect the wearer against splashes or sprays of bodily fluids (36). There is limited evidence for their effectiveness in preventing influenza virus transmission either when worn by the infected person for source control or when worn by uninfected persons to reduce exposure. Our systematic review found no significant effect of face masks on transmission of laboratory-confirmed influenza.
- ceejayoz 5y ago
  That's like trying to dunk on astronomers from the 1980s saying "there is no evidence yet of extrasolar planets".
peytn 5y ago
That graphic depicts a surgical face mask, not a cloth face mask. Nice try.
denton-scratch 5y ago
Which is why I get annoyed at the flood of maskless wonders in UK shops since 'freedom day' (I am 65, and have a chronic respiratory illness). And I wonder whether the Great Unmasked coincides with the Great Unvaccinated.
- denton-scratch 5y ago
  Doubling-down on the downvotes: When the checkout queue is moving slowly, some people try to move the queue forward by moving closer tho the person in front, even though the queue hasn't moved. I've noticed that people who do this are always maskless. My local store is near a homeless shelter; homeless people face much greater threats than what amounts to a nasty respiratory virus. But I like social distancing; it tends to improve my sense of having personal space, as well as making me feel safer.
  - drcongo 5y ago
    I can't work out what your other comment is getting downvoted for. It basically boils down to "some people are arseholes and they behave like arseholes" - which probably tells you all you need to know about the downvoters.
    - denton-scratch 5y ago
      Oh - I'm not at all surprised. Many people have been bitterly opposed to mandatory masking since it was introduced. Among them are influential public figures with a reputation for being able to think, such as Peter Hitchens. It's not just ill-educated people, and they hold these views sincerely. So I have to accept there's a way of thinking that makes it actually wrong to mask-up. Incidentally, I walked off the street into a pub the other day, for a straight whisky at the bar - I didn't plan to hang around (nobody was masked, of course, because you can't drink through a mask). Well I was basically called out by this grumpy fella, because I came in masked. I mean, he was joking, but he obviously despised me.

by mike_d 5y ago

busymom0 5y ago

Unless we are talking about fitted N95 masks, CDC used to say the opposite even about transmission to others: "There is limited evidence for their effectiveness in preventing influenza virus transmission either when worn by the infected person for source control or when worn by uninfected persons to reduce exposure." https://www.cdc.gov/eid/article/26/5/19-0994_article https://www.cdc.gov/eid/article/26/5/19-0994_article > Disposable medical masks (also known as surgical masks) are loose-fitting devices that were designed to be worn by medical personnel to protect accidental contamination of patient wounds, and to protect the wearer against splashes or sprays of bodily fluids (36). There is limited evidence for their effectiveness in preventing influenza virus transmission either when worn by the infected person for source control or when worn by uninfected persons to reduce exposure. Our systematic review found no significant effect of face masks on transmission of laboratory-confirmed influenza.

ceejayoz 5y ago
That's like trying to dunk on astronomers from the 1980s saying "there is no evidence yet of extrasolar planets".

peytn 5y ago

That graphic depicts a surgical face mask, not a cloth face mask. Nice try.

denton-scratch 5y ago

Which is why I get annoyed at the flood of maskless wonders in UK shops since 'freedom day' (I am 65, and have a chronic respiratory illness). And I wonder whether the Great Unmasked coincides with the Great Unvaccinated.

denton-scratch 5y ago
Doubling-down on the downvotes: When the checkout queue is moving slowly, some people try to move the queue forward by moving closer tho the person in front, even though the queue hasn't moved. I've noticed that people who do this are always maskless. My local store is near a homeless shelter; homeless people face much greater threats than what amounts to a nasty respiratory virus. But I like social distancing; it tends to improve my sense of having personal space, as well as making me feel safer.
- drcongo 5y ago
  I can't work out what your other comment is getting downvoted for. It basically boils down to "some people are arseholes and they behave like arseholes" - which probably tells you all you need to know about the downvoters.
  - denton-scratch 5y ago
    Oh - I'm not at all surprised. Many people have been bitterly opposed to mandatory masking since it was introduced. Among them are influential public figures with a reputation for being able to think, such as Peter Hitchens. It's not just ill-educated people, and they hold these views sincerely. So I have to accept there's a way of thinking that makes it actually wrong to mask-up. Incidentally, I walked off the street into a pub the other day, for a straight whisky at the bar - I didn't plan to hang around (nobody was masked, of course, because you can't drink through a mask). Well I was basically called out by this grumpy fella, because I came in masked. I mean, he was joking, but he obviously despised me.