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HEPA filters are good enough for the exhaust from BSL4 labs. They work. But they only work on the air that passes through them, as a barrier between separate en
by closeparen 6y ago
HEPA filters are good enough for the exhaust from BSL4 labs. They work. But they only work on the air that passes through them, as a barrier between separate environments. Just placing one somewhere in the room probably won’t help much.
- jaggederest 6y agoYou'd be surprised how effective "just putting one in the room" is. You can build a fairly effective cleanroom that way, and cleanrooms are a lot "cleaner" than is required for effectively reducing the viral load for things like COVID19
- nl 6y agoIndeed, and many (most?) domestic air filters include HEPA filters. I have a Phillips one[1] and it does. [1] https://www.philips.com.au/c-p/AC1215_70/series-1000-air-purifier/support https://www.philips.com.au/c-p/AC1215_70/series-1000-air-pur...
- im3w1l 6y agoWouldn't that be defeated if you talk with one of the infected? Like you would be in a huge hotspot compared to the room average.
- jaggederest 6y agoAbsolutely, but compare that with not having a filter operating at all. We've seen that one or a few infected individuals can infect hundreds in a closed space, so if we could reduce that by even a small factor, it's definitely significant.