4 ms·

So what's the point of wearing masks then?

by Mary-Jane 6y ago

Mary-Jane 6y ago
* masks! Not balls. lol
- dang 6y ago
  I've edited your comment above to turn the balls back into masks. (Masked balls, anyone? https://www.google.com/search?q=%22masked+balls%22&tbm=isch https://www.google.com/search?q=%22masked+balls%22&tbm=isch)
ceejayoz 6y ago
SARS-CoV-2 is spread by droplets, which fall to the ground rapidly. Masks catch a lot of these, and slow down the rest. When coupled with six foot distancing, that has a major impact. Airborne transmission means the virus hangs out in the air for an extended period of time. SARS-CoV-2 does not do this. Stuff like measles does.
- bonzini 6y ago
  And partly because of that measles has an absolutely insane R0 (15). This is also why for measles vaccination it is harder to reach herd immunity than with other vaccination: the required amount of vaccinated people is 1-1/R0, which for measles is 95% roughly.
- greedo 6y ago
  Actually, SARS-CoV-2 is aerosolized.
  - ceejayoz 6y ago
    No, it's not. It can be in certain medical procedures, like intubation. (https://jamanetwork.com/journals/jama/fullarticle/2765376 https://jamanetwork.com/journals/jama/fullarticle/2765376)
    - greedo 6y ago
      https://www.nejm.org/doi/full/10.1056/NEJMc2004973 https://www.nejm.org/doi/full/10.1056/NEJMc2004973 https://www.medicalnewstoday.com/articles/tiny-airborne-particles-may-carry-the-new-coronavirus https://www.medicalnewstoday.com/articles/tiny-airborne-part... https://www.nature.com/articles/s41586-020-2271-3_reference.pdf https://www.nature.com/articles/s41586-020-2271-3_reference....
      - ceejayoz 6y ago
        You've completely misread that first study. > Aerosols (<5 μm) containing SARS-CoV-2 (105.25 50% tissue-culture infectious dose [TCID50] per milliliter) or SARS-CoV-1 (106.75-7.00 TCID50 per milliliter) were generated with the use of a three-jet Collison nebulizer and fed into a Goldberg drum to create an aerosolized environment. They intentionally created aerosols for the purposes of the study. The other studies relate to aerosols in hospitals, which are likely generated by those aerosol-generating procedures; intubation, nebulizers, etc. Healthcare staff are observing aerosol precautions when doing these procedures for this reason.
HPsquared 6y ago
Like in Pulp Fiction?
clairity 6y ago
masks mainly only matter when (1) you’re infected but don’t know it, or (2) you’re often in high face-to-face interaction situations (like medical care workers or cashiers) (also, you can edit your comment to say masks instead of balls, as you apparently intended.)

So what's the point of wearing masks then?

Mary-Jane 6y ago

* masks! Not balls. lol

dang 6y ago
I've edited your comment above to turn the balls back into masks. (Masked balls, anyone? https://www.google.com/search?q=%22masked+balls%22&tbm=isch https://www.google.com/search?q=%22masked+balls%22&tbm=isch)

ceejayoz 6y ago

SARS-CoV-2 is spread by droplets, which fall to the ground rapidly. Masks catch a lot of these, and slow down the rest. When coupled with six foot distancing, that has a major impact. Airborne transmission means the virus hangs out in the air for an extended period of time. SARS-CoV-2 does not do this. Stuff like measles does.

bonzini 6y ago
And partly because of that measles has an absolutely insane R0 (15). This is also why for measles vaccination it is harder to reach herd immunity than with other vaccination: the required amount of vaccinated people is 1-1/R0, which for measles is 95% roughly.
greedo 6y ago
Actually, SARS-CoV-2 is aerosolized.
- ceejayoz 6y ago
  No, it's not. It can be in certain medical procedures, like intubation. (https://jamanetwork.com/journals/jama/fullarticle/2765376 https://jamanetwork.com/journals/jama/fullarticle/2765376)
  - greedo 6y ago
    https://www.nejm.org/doi/full/10.1056/NEJMc2004973 https://www.nejm.org/doi/full/10.1056/NEJMc2004973 https://www.medicalnewstoday.com/articles/tiny-airborne-particles-may-carry-the-new-coronavirus https://www.medicalnewstoday.com/articles/tiny-airborne-part... https://www.nature.com/articles/s41586-020-2271-3_reference.pdf https://www.nature.com/articles/s41586-020-2271-3_reference....
    - ceejayoz 6y ago
      You've completely misread that first study. > Aerosols (<5 μm) containing SARS-CoV-2 (105.25 50% tissue-culture infectious dose [TCID50] per milliliter) or SARS-CoV-1 (106.75-7.00 TCID50 per milliliter) were generated with the use of a three-jet Collison nebulizer and fed into a Goldberg drum to create an aerosolized environment. They intentionally created aerosols for the purposes of the study. The other studies relate to aerosols in hospitals, which are likely generated by those aerosol-generating procedures; intubation, nebulizers, etc. Healthcare staff are observing aerosol precautions when doing these procedures for this reason.

HPsquared 6y ago

Like in Pulp Fiction?

clairity 6y ago

masks mainly only matter when (1) you’re infected but don’t know it, or (2) you’re often in high face-to-face interaction situations (like medical care workers or cashiers) (also, you can edit your comment to say masks instead of balls, as you apparently intended.)