1/ Risk reduction in a room that has at least 5 air changes per hour. @APSVirginia, another study shows how layered mitigations work. We need to add True HEPAS to rooms *now* to #CleanTheAir, and boost filtration, because #DeltaVariant is far more infectious.
https://twitter.com/eggersnsf/status/1429362248682717185
2/ The blue line👆 is where most APS rooms are, if not WORSE for about 1/3 of our rooms. APS chose the most minimal goal it could (4 ACH). We haven’t prioritized providing the same BETTER 6ACH ventilation for all kids.
@APSVaSchoolBd, please ask for #6ACHforAll & #AirEquity!
@APSVaSchoolBd, please ask for #6ACHforAll & #AirEquity!
3/ APS’ ionizers produce 20% less extra clean air, so they’ve underestimated ventilation.
They’ve doubled capacity, which means now 1/2 the clean air for each student returning to school in a week, against #DeltaVariant, which is 2x more infectious.
They’ve doubled capacity, which means now 1/2 the clean air for each student returning to school in a week, against #DeltaVariant, which is 2x more infectious.
https://twitter.com/smartrestartaps/status/1427407578871603200?s=20
4/ To reduce risk, we need APS to add a True HEPA to all rooms to get them to 6 ACH. That’s lowest amount of ventilation appropriate to reduce risks of an airborne virus, per ASHRAE.
APS should also check it is providing at least 10 L/s/person of air to crowded rooms, per WHO.
APS should also check it is providing at least 10 L/s/person of air to crowded rooms, per WHO.
5/ For every hourly refresh of CLEAN, UNCONTAMINATED AIR, risk of inhalation is reduced inversely.
A 3 ACH room (since ionizers don’t work well & APS has these) raised to 6 ACH = risks reduced by HALF.
APS: let’s stop #COVID19! Add extra HEPA units!
A 3 ACH room (since ionizers don’t work well & APS has these) raised to 6 ACH = risks reduced by HALF.
APS: let’s stop #COVID19! Add extra HEPA units!
https://twitter.com/Lucas_Bolivian/status/1385716198604779528?s=20
6/ Time’s running out for @APSFacilities to boost our defenses against #DeltaVariant. #Delta changed the game. We’ve gotta respond.
Who is going to speak up for #AirEquity?
#DeltaIsDifferent and we need the strongest defense possible. #CleanTheAir
Who is going to speak up for #AirEquity?
#DeltaIsDifferent and we need the strongest defense possible. #CleanTheAir
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