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Irfan Dhalla Profile picture
Irfan Dhalla
@IrfanDhalla
Vice-president and general internist @unityhealthto, associate prof @uoftmedicine, and very fortunate husband and father. He/him.
Aug 27, 2021 • 6 tweets • 2 min read
Thread: The new @CDCMMWR paper about a Delta outbreak in a California elementary school shows the value of a layered approach to keeping kids in schools and keeping outbreaks small.

I counted 14 relevant factors. (And I'm sure I missed some.) 1. Lower community incidence - if the teacher didn't get infected in the first place, no outbreak at all.

2. Mandatory vaccination of staff - all teachers but two were vaccinated.

3. Better education re: staying home when sick - teacher worked for 2 days despite symptoms.
Dec 23, 2020 • 6 tweets • 1 min read
A thread on travel, Covid-19 and 🇨🇦.

1. International travel is likely playing a very small role right now. Community transmission is raging, and international travelers are required to quarantine for 14 days.

Interprovincial and regional travel may be a different story. 2. Lab-based PCR testing capacity is severely constrained in the public system. Using it for asymptomatic travelers is not a great idea.

3. Using rapid antigen tests to shorten the 14-day quarantine period might seem to make sense. But...
Nov 26, 2020 • 10 tweets • 4 min read
Thread: We all know we need to keep improving #TestTraceIsolateSupport to get us out of the lockdown, and to save lives.

The chapter on testing, case management and contact tracing in the Auditor General's report is a GREAT blueprint for improvement.

auditor.on.ca/en/content/spe… Recommendation #1 is about lab testing capacity and adequate funding for hospitals.
Nov 3, 2020 • 8 tweets • 2 min read
Thread: 6 things I'd suggest we do differently. 1. Every day, in every way, emphasize the core behaviours we want to encourage:
-stay home except for essential purposes, school, health care and healthy outdoor activity
-get tested and self-isolate if symptomatic, even mildly
-get tested if exposed
-emphasize work from home
Oct 11, 2020 • 10 tweets • 2 min read
Thread: I've exchanged views about Covid-19 with someone from the business world over the last 48 hours. I thought I'd share what I think is an emerging consensus.

The goal is to help bring us closer to a "whole of society" approach to dealing with the virus. First, the impact of the virus - and muddled responses to the virus - on investors, businesses and employees has been absolutely massive. In some ways this is stating the obvious, but it's important for those of us with secure jobs to keep reminding ourselves.
Jul 9, 2020 • 9 tweets • 4 min read
Thread: I know and admire many authors (e.g., @drbobbell, @OnyeActiveMD, @vg_to, @UofTMedDean, @trclosson, etc.) of the "balanced response" letter re: Covid-19.

But I worry about the overall tone of the letter, and I also have three specific concerns... 1. The letter says that "with ready access to health services, severe outcomes can be averted in those who do not have pre-existing risk factors."

This is misleading. Covid-19 does occasionally kill healthy people who are in the prime of their lives. nytimes.com/2020/07/06/hea…