Impressed at how quickly the masking recs in the ON schools guidance were taken out of context and misinterpreted. 🧵
covid19-sciencetable.ca/sciencebrief/s…
TL;DR:
1. Masking is important + effective
2. We recommend aligning school practices with PH guidance on masking indoors
1/8
covid19-sciencetable.ca/sciencebrief/s…
TL;DR:
1. Masking is important + effective
2. We recommend aligning school practices with PH guidance on masking indoors
1/8
cdc.gov/coronavirus/20…
We read this 👆 carefully when it came out 10d ago and compared with our guidance.
Aside - found its vent/filtration section lacking in strategies and details.
(Our stakeholders said they wanted a roadmap.
So we built that into the recs 👇)
2/
We read this 👆 carefully when it came out 10d ago and compared with our guidance.
Aside - found its vent/filtration section lacking in strategies and details.
(Our stakeholders said they wanted a roadmap.
So we built that into the recs 👇)
2/
Back to CDC doc:
"Masks should be worn indoors by all individuals (age 2+) who are not fully vaccinated"
"Not fully vaccinated" i.e. guidance based on individual vaccine status?
How would this work for 12-17 now? 5-11yo later?
How to not discriminate against unvaxxed?
3/
"Masks should be worn indoors by all individuals (age 2+) who are not fully vaccinated"
"Not fully vaccinated" i.e. guidance based on individual vaccine status?
How would this work for 12-17 now? 5-11yo later?
How to not discriminate against unvaxxed?
3/
AAP today:
"recommendation that everyone older than age 2 wear masks, regardless of vaccination status"
services.aap.org/en/news-room/n…
No surprise, and good that vaccine status is removed
4/
"recommendation that everyone older than age 2 wear masks, regardless of vaccination status"
services.aap.org/en/news-room/n…
No surprise, and good that vaccine status is removed
4/
Also:
"Many schools will not have a system to monitor vaccine status of students, teachers and staff, and some communities overall have low vaccination uptake where the virus may be circulating more prominently"
The AAP guidance aligns with what's set in our ON guidance.
5/
"Many schools will not have a system to monitor vaccine status of students, teachers and staff, and some communities overall have low vaccination uptake where the virus may be circulating more prominently"
The AAP guidance aligns with what's set in our ON guidance.
5/
We recommended masking in elementary grades if there's more circulating virus in community. Older kids follow PH guidance for indoors
C.f. a low-risk scenario, where you've got minimal circulating virus + minimal societal restrictions (likely with high vaccine uptake)
6/
C.f. a low-risk scenario, where you've got minimal circulating virus + minimal societal restrictions (likely with high vaccine uptake)
6/
Low risk scenario defined as
1. minimal disease burden
2. reproduction number < 1 (i.e. not epidemic growth)
This is the looking-ahead scenario.
Not the here-and-now scenario.
Maybe the near-future scenario as we lift restrictions
#ComunityImmunity and #TTI critical here
7/
1. minimal disease burden
2. reproduction number < 1 (i.e. not epidemic growth)
This is the looking-ahead scenario.
Not the here-and-now scenario.
Maybe the near-future scenario as we lift restrictions
#ComunityImmunity and #TTI critical here
7/
Again, masking is important and effective. A well-fitted mask that controls droplets is considered an engineering control!
Schools would - at minimum - follow PH guidance:
If masking indoors among adults, then mask in schools among kids
(all contributors aligned on this)
8/fin
Schools would - at minimum - follow PH guidance:
If masking indoors among adults, then mask in schools among kids
(all contributors aligned on this)
8/fin
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