4 ms·

Yes, 10-15 meters. I often give my friends an example: we're on the beach in 20 meters away a couple is walking and you can smell their strong perfume. Aromas

Yes, 10-15 meters. I often give my friends an example: we're on the beach in 20 meters away a couple is walking and you can smell their strong perfume. Aromas are molecules, alright, but viruses are not so much "heavier." They can be carried away pretty far away. Of course, the further you are, the smaller the chance gets, but it's possible. The longer you stay, and the more people walk by, the more real the chance of infection gets.

gnicholas 3y ago
Wow, I've never heard of anyone getting COVID when separated by such a distance when outside.
- nikolay 3y ago
  There's no magic outside. UV rays take minutes to deactivate the virus. Breeze can be a friend of a foe. https://medium.com/@jurgenthoelen/belgian-dutch-study-why-in-times-of-covid-19-you-can-not-walk-run-bike-close-to-each-other-a5df19c77d08 https://medium.com/@jurgenthoelen/belgian-dutch-study-why-in...
  - gnicholas 3y ago
    Is there any similar guidance from later in the pandemic? Much of what we thought we knew in April 2020 turned out to be incorrect. It's perhaps not impossible to get COVID from 30+ feet away, but I sure haven't ever heard of such a thing happening, nor have I seen any guidance that indicated this distance presents a risk. TBH, I would think it would be more likely that the infection happened at a different time, when the kids were not actually 30 feet apart (even if they were supposed to be, and said they were). I say this as a parent, and as a former kid.
    - nikolay 3y ago
      Some scientists have been studying airborne virus transmission and respirators' effectiveness well before COVID-19. I recommend following the work of Linsey Marr [0]. Measless is known to have infected people at a stadium 100 feet away [1]. Influenza is known to infect through dust particles [2]. I can't find the study, but this is valid outdoors, too. [0]: https://twitter.com/linseymarr https://twitter.com/linseymarr [1]: https://www.statnews.com/2019/02/14/measles-infection-virus-spread/ https://www.statnews.com/2019/02/14/measles-infection-virus-... [2]: https://www.ucdavis.edu/news/airborne-viruses-can-spread-dust-nonrespiratory-particles https://www.ucdavis.edu/news/airborne-viruses-can-spread-dus...
    - nikolay 3y ago
      Regarding the 30-foot distance, my daughter was home and had not seen anyone for 2 weeks. If she got it from us, the 4 PCRs we've had would have shown us being the source. She had symptoms - headache, a fever, a sore throat, and nasal congestion. She had several positive PCR tests after the first one. It is possible, given the right conditions. My point was that if I can smell somebody's perfume from a great distance, I can also inhale their virus.

gnicholas 3y ago

Wow, I've never heard of anyone getting COVID when separated by such a distance when outside.

nikolay 3y ago
There's no magic outside. UV rays take minutes to deactivate the virus. Breeze can be a friend of a foe. https://medium.com/@jurgenthoelen/belgian-dutch-study-why-in-times-of-covid-19-you-can-not-walk-run-bike-close-to-each-other-a5df19c77d08 https://medium.com/@jurgenthoelen/belgian-dutch-study-why-in...
- gnicholas 3y ago
  Is there any similar guidance from later in the pandemic? Much of what we thought we knew in April 2020 turned out to be incorrect. It's perhaps not impossible to get COVID from 30+ feet away, but I sure haven't ever heard of such a thing happening, nor have I seen any guidance that indicated this distance presents a risk. TBH, I would think it would be more likely that the infection happened at a different time, when the kids were not actually 30 feet apart (even if they were supposed to be, and said they were). I say this as a parent, and as a former kid.
  - nikolay 3y ago
    Some scientists have been studying airborne virus transmission and respirators' effectiveness well before COVID-19. I recommend following the work of Linsey Marr [0]. Measless is known to have infected people at a stadium 100 feet away [1]. Influenza is known to infect through dust particles [2]. I can't find the study, but this is valid outdoors, too. [0]: https://twitter.com/linseymarr https://twitter.com/linseymarr [1]: https://www.statnews.com/2019/02/14/measles-infection-virus-spread/ https://www.statnews.com/2019/02/14/measles-infection-virus-... [2]: https://www.ucdavis.edu/news/airborne-viruses-can-spread-dust-nonrespiratory-particles https://www.ucdavis.edu/news/airborne-viruses-can-spread-dus...
  - nikolay 3y ago
    Regarding the 30-foot distance, my daughter was home and had not seen anyone for 2 weeks. If she got it from us, the 4 PCRs we've had would have shown us being the source. She had symptoms - headache, a fever, a sore throat, and nasal congestion. She had several positive PCR tests after the first one. It is possible, given the right conditions. My point was that if I can smell somebody's perfume from a great distance, I can also inhale their virus.