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But the droplets the virus uses to spread are bigger than 5-10 micrometers. You don’t need a N95 mask to stop that.
by sildur 7y ago
But the droplets the virus uses to spread are bigger than 5-10 micrometers. You don’t need a N95 mask to stop that.
- DoctorOetker 7y agoCan you give me a reference for the "bigger than 5-10 micrometers" size? Any scientific article, published or unpublished, peer reviewed or not...
- thedailymail 7y agoNot OP, but here is an article that says the size-based definition of droplet vs. aerosol remains a bit vague (the article is about influenza A virus, but I believe the statement on vector size remains relevant): "There is essential agreement that particles with an aerodynamic diameter of 5 µm or less are aerosols, whereas particles >20 µm would be large droplets. Some authors define aerosols as ≤10 µm or even ≤20 µm (Knight 1973; Treanor 2005); particles between 5 and 15 to 20 µm have also been termed ‘intermediate’ (Couch et al. 1966; all values refer to the aerodynamic diameter; for bioaerosols, they refer to the aerodynamic diameter after evaporation). When reviewing the literature, it is therefore important to verify the size of the particles being studied and the authors' definitions." https://royalsocietypublishing.org/doi/full/10.1098/rsif.2009.0302.focus https://royalsocietypublishing.org/doi/full/10.1098/rsif.200...
- DoctorOetker 7y agothat's a great reference ... for Influenza A! some diseases cause larger droplets, other smaller droplets... I still look forward to a paper describing experimental measurement regarding SARS-COV-II Also if anyone finds a paper that measured the UV doses (fluences) for N-Log reductions, I would be very happy to read it!
- netjiro 7y agoDroplet size is not generally determined by the disease. Droplet size distribution and air suspension parameters depend on humidity and temperature, as well as composition, salinity, etc.