Discover and read the best of Twitter Threads about #respiratorsnow
Most recents (2)
To the experts insisting “N95s are useless if not fit-tested”
Have you ever tried to fit test a “well-fit surgical mask” or “3 layered well-fit cloth mask”?
TLDR they are inferior.
A brief case series and 🧵
1/15
Have you ever tried to fit test a “well-fit surgical mask” or “3 layered well-fit cloth mask”?
TLDR they are inferior.
A brief case series and 🧵
1/15
There are two type of fit tests, 1) quantitative fit testing - a portacount machine measures the concentration of aerosol outside the mask versus inside the mask and 2) qualitative fit testing - a potent bitter or sweet aerosolized solution is inhaled under a hood
2/15
2/15
I underwent quantitative fit testing on a surgical mask, suboptimally fit KN95 and well fit CN99 (FFP3). The results were intuitive. The surgical mask, while still offering some protection, performed the worst.
3/15
3/15
This week, @TorontoStar published 2 articles re. whether the public should upgrade their masks for the Delta wave.
That's good, except that they chose to interview ID experts steeped in #DropletDogma, who thoroughly muddied the waters on this critical, life-saving topic.
🧵1/
That's good, except that they chose to interview ID experts steeped in #DropletDogma, who thoroughly muddied the waters on this critical, life-saving topic.
🧵1/
First is this story, which asks: Is it time to upgrade your mask? The obvious answer is YES!! But instead of giving this unequivocal advice, the article muddies the issue, providing reckless quotes from the Ministry of Health and biased IPAC officials.
2/
2/
Let's analyze these quotes. First, the Ministry of Health states that ALL medical masks should be reserved for HCWs.
This is ludicrous.
We have a GLUT of Canadian made PPE, INCLUDING N95 Respirators! In hospitals, IPAC has the N95s locked up!
3/
This is ludicrous.
We have a GLUT of Canadian made PPE, INCLUDING N95 Respirators! In hospitals, IPAC has the N95s locked up!
3/
