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Ahmed Al-Jaishi, #Epidemiologist Profile picture
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22 Oct, 6 tweets, 3 min read
Oct 22: There are 567 (-6 change) schools with 1+ #COVID19 cases in Ontario schools. There are also:

- 200 schools with 2+ cases
- 369 (1 in 11) elementary and 192 (1 in 5) secondary schools with 1+ cases
- 912 people with an infection

Live map/charts: covid19inontario.com/school-tracker
The top five municipalities contribute 413 (72%) of the 567 schools with active cases:

- Toronto: 194 (1 in 4 schools)
- Ottawa: 93 (1 in 4 schools)
- Mississauga: 54 (1 in 4 schools)
- Brampton: 48 (1 in 4 schools)
- Hamilton: 24 (1 in 7 schools)
- 200 schools have 2+ and 80 schools have 3+ active cases
In total, there are 4828 public schools
The 912 (911 yesterday) #COVID19 school-related cases represent 14% of the 6390 ACTIVE cases in Ontario
We are supplementing the provincial COVID-19 school reports with information from the school boards. So far, we have included data from:
- Toronto DSB
- Peel DSB
- Dufferin-Peel DSB
- York DSB
Ottawa region will be added next!
To help us capture all relevant school-related cases and to improve our workflow, please submit confirmed reports here: tinyurl.com/covidschoolsCA…

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More from @AAlJaishi

Ahmed Al-Jaishi, #Epidemiologist Profile picture
22 Oct
October 22: #COVID19 in #Ontario
- Cases: 67,527 (+841 new)
- Deaths: 3071 (+9)
- In hospital: 270 (+10)
- In ICU: 74 (+3)
- On a ventilator: 48 (-1)
- Active cases: 6390 (+91)
- Reproduction rate: 0.99 (Credible interval: 0.88, 1.1)

covid19inontario.com
The top 3 public health units reported 603 of today's 841 cases (72%):
- Toronto PH: 335 cases (40%) or 107 cases per million
- Peel PH: 162 cases (19%) or 101 cases per million
- York Region PH: 106 cases (13%) or 86 cases per million

covid19inontario.com
Regional #COVID19 cases in #Ontario:
- 9 of 34 PHUs reported having fewer than 5 cases active cases
- 10 of 34 PHUs reported fewer than 5 new cases in the last 7 days

covid19inontario.com
Read 8 tweets
Ahmed Al-Jaishi, #Epidemiologist Profile picture
21 Oct
Oct 21: #COVID19 in publicly-funded schools. There are at least:
- 573 (3 new) schools with 1+ active cases
- 196 schools with 2+ active cases
- 881 schools that ever had cases (@covidschoolsCA)
- 911 (11) people with active infections

Live map/charts: covid19inontario.com/school-tracker
The top five municipalities contribute 424 (74%) of the 573 schools with active cases:

- Toronto: 190 (1 in 4 schools)
- Ottawa: 108 (1 in 3 schools)
- Mississauga: 57 (1 in 4 schools)
- Brampton: 47 (1 in 4 schools)
- Hamilton: 22 (1 in 8 schools)
- 573 or 1 in 8 schools have 1+ active cases
- 380 or 1 in 10 elementary schools have 1+ active cases
- 188 or 1 in 4 secondary schools have 1+ active cases
- 196 schools have 2+ and 76 schools have 3+ active cases
Read 8 tweets
Ahmed Al-Jaishi, #Epidemiologist Profile picture
21 Oct
October 21: #COVID19 in #Ontario
- Cases: 66,686 (+790 new)
- Deaths: 3062 (+9)
- In hospital: 260 (-14)
- In ICU: 71 (-1)
- On a ventilator: 49 (+4)
- Active cases: 6299 (+62)
- Reproduction rate: 0.97 (Credible interval: 0.86, 1.08) ImageImageImageImage
The top 3 public health units reported 554 of today's 790 cases (70%):
- Toronto PH: 321 cases (41%) or 103 cases per million
- Peel PH: 157 cases (20%) or 98 cases per million
- York Region PH: 76 cases (10%) or 62 cases per million

covid19inontario.com ImageImage
Regional #COVID19 cases in #Ontario:
- 11 of 34 PHUs reported having fewer than 5 cases active cases
- 10 of 34 PHUs reported fewer than 5 new cases in the last 7 days

covid19inontario.com ImageImageImageImage
Read 8 tweets
Ahmed Al-Jaishi, #Epidemiologist Profile picture
20 Oct
Oct 20: #COVID19 in publicly-funded schools. There are AT LEAST:
🏫 570 (+19 new) schools with active cases
🏫 848 schools that ever had cases (@covidschoolsCA)
🦠 900 (+94) people with active infections
🔐 4 (0) active school closures

Live map/charts: covid19inontario.com/school-tracker Image
The top 4 municipalities contribute 396 (69%) of the 570 schools with active cases:
- Toronto: 184 (1 in 4 schools)
- Ottawa: 109 (1 in 3 schools)
- Mississauga: 56 (1 in 4 schools)
- Brampton: 47 (1 in 4 schools)

@tdsb @TCDSB @OCDSB @PeelSchools @DPCDSBSchools @OttCatholicSB Image
- 570 (12%) of 4828 all schools have at least one active case
- 392 (10%) of 3931 elementary schools have at least one active case
- 174 (19%) of 897 secondary schools have at least one active case Image
Read 7 tweets
Ahmed Al-Jaishi, #Epidemiologist Profile picture
20 Oct
October 20: #COVID19 in #Ontario
- Cases: 65,896 (+821 new)
- Deaths: 3053 (+3)
- In hospital: 274 (+22)
- In ICU: 72 (+3)
- On a ventilator: 45 (+5)
- Active cases: 6237 (+190)
- Reproduction rate: 0.97 (Credible interval: 0.86, 1.08)

covid19inontario.com ImageImageImageImage
The top 3 public health units reported 265 of today's 821 cases (32%):

- Toronto PH: 327 cases (13%) or 105 cases per million
- Peel PH: 136 cases (10%) or 85 cases per million
- Ottawa PH: 79 cases (9%) or 75 cases per million

covid19inontario.com ImageImage
Regional #COVID19 cases in #Ontario:
- 11 of 34 PHUs reported having fewer than 5 cases active cases
- 11 of 34 PHUs reported fewer than 5 new cases in the last 7 days

covid19inontario.com ImageImageImageImage
Read 10 tweets
Ahmed Al-Jaishi, #Epidemiologist Profile picture
15 Oct
I often see comments saying: "let #COVID19 spread widely so we can reach herd immunity".

**To those people**: NEVER, in the history of infectious diseases, has there been a situation where we reached herd immunity through "natural infections". It is NONSENSE.

1/9
#Epitwitter
Epidemiology and public health experts discuss herd immunity in the context of VACCINES (e.g., irradicating smallpox). If we let #COVID19 rip through the population, we would require approximately 70% of people to be infected.

Let me explain why that is problematic:

2/9
Who is at risk of more severe disease or outcomes?

1) Adults 60+ years:
- A quarter (1 in 4 people) of Canada's population is 60 years or older
- More than 95% of 9500 COVID-related deaths are in people 60+ years

3/9
Read 10 tweets

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