1/ Adding #ventilation helps reduce (but not remove!) aerosols & risk from COVID. One simple measure of ventilation is to keep #CO2 sufficiently low. Simple CO2 sensors can be <$150 and are easy to take with you.
One nice summary of consumer CO2 monitors:
bit.ly/monitorsCO2
One nice summary of consumer CO2 monitors:
bit.ly/monitorsCO2
2/ The idea is that indoor #CO2 comes primarily from people breathing out; but breathing also produces potentially infectious aerosols. So keeping #CO2 levels <800 ppm (or <600 ppm) means air is likely refreshed rapidly enough to keep aerosol risk low.
3/ There are lots of good resources & articles on improving #ventilation & for using #CO2 monitors for rough checks. This article by @B_resnick from months ago is worth a read as a broad overview on various topics related to air safety wrt COVID/aerosols.
vox.com/science-and-he…
vox.com/science-and-he…
4/ More detail on using #CO2 monitoring as a proxy for ventilation rates (and all other questions you can think of about #aerosols & #COVID). docs.google.com/document/d/1fB…
5/ The nice overview on #CO2 monitors (Twt 1) was put together by a team in Spain (doc in English & Spanish; see link). Peruse their accounts for info.
@FloriVilla3
@EJimenez_UCLM
@felisi2punto0
@TomsGarridoPre1
@jljcolorado
@Mila_Rodenas
@amaliaceam
bit.ly/monitorsCO2
@FloriVilla3
@EJimenez_UCLM
@felisi2punto0
@TomsGarridoPre1
@jljcolorado
@Mila_Rodenas
@amaliaceam
bit.ly/monitorsCO2
6/ By clicking around through hashtag #COVIDCO2 you can find interesting anecdotes from #CO2 monitoring as people go about daily activities.
Here is a collection of some of mine at home, work, in a car, preschool, etc.
Here is a collection of some of mine at home, work, in a car, preschool, etc.
https://twitter.com/HuffmanLabDU/status/1335999080938364932
7/ For other articles & threads on various COVID-aerosol & #COVIDisAirborne topics, search "CO2" or "ventilation" on the resource spreadsheet here.
docs.google.com/spreadsheets/d…
docs.google.com/spreadsheets/d…
(Addendum): I meant to emphasize that by "aerosol risk" here I mean the viral aerosol that mixes into the room like smoke. Ventilation will NOT help exposure to aerosol plume nearby the emitter. This is why masks & distancing are still key.
Two slides:
Two slides:
https://twitter.com/HuffmanLabDU/status/1347661399992909824
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