The WHO IPC committee is controlled by Conly, who has hired Heneghan and Jefferson to run the evidence gathering to determine the efficacy of N95s versus surgical masks.
All three have shown they are Antimaskers via their words and deeds.
And yet, they control how the
WHO recommends N95s.
If I were in the WHO, I would pause for a moment, and wonder why they are odds with the CDC's NIOSH who states that surgical masks are not PPE for aerosols or airborne diseases.
• • •
Missing some Tweet in this thread? You can try to
force a refresh
One of my favorite concepts that you can DIY at home if someone gets Covid.
Top ventilated HEPA. (Really can just change how it's taped up, so even side exhaust will work. Even a CR box could be used (albeit single or double filter version).)
Duct tape.
PVC.
"no U.S. Energy Star certified air cleaners have CADR values (for either tobacco smoke, dust, or pollen) matching the CADR value for the CR Box even on low speed "
A 🧵on near field ( < 6 feet) and far field (>6 feet) aerosols. (To be perfectly frank, this one's for me, but you are invited along the ride into my noggin).
Both airborne, and both important.
Let's start with tweets from aerosol and IAQ scientists.
Do aerosols even matter?
Yes. Millions of infectious aerosols emitted per hour in this Dr. Mowaska (technically Ma et Al) study: