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Tracy Høeg, MD, PhD Profile picture
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28 Jul, 4 tweets, 2 min read
This is worth retweeting since many are discussing masks and schools. British Columbia (BC, green) kept schools open all year and did not require masks in schools. Ontario kept schools closed all year; Quebec and Ontario required masks.
@JuliaSLehmanMD this in addition to these two studies are what I reference if people ask why I don't think masking in schools will make much if any difference w/delta.

1. Norway's minimal transmission in schools without masks ncbi.nlm.nih.gov/pmc/articles/P…
2. No correlation with mask mandates in schools and case numbers in Florida and New York

medrxiv.org/content/10.110…
Clarification from @cncksj4:

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More from @TracyBethHoeg

Tracy Høeg, MD, PhD Profile picture
18 Jun
There were many self-reports with chest pain lasting days where no medical care was sought, so no diagnosis. What we are finding is a not insignificant risk of myo/pericarditis post vax, even greater in kids than younger people. My understanding is VAERS typically underreports.
We feel this risk should be acknowledged. My rec is to pause at least mandatory vaccines for otherwise healthy kids as Germany has done until we have more info. Also, it seems it would be a mistake to ignore natural immunity esp in kids, given (albeit low) myocarditis risk w/vax.
More info to come, including troponin levels for these cases.
Read 4 tweets
Tracy Høeg, MD, PhD Profile picture
17 Jun
I want to recommend @drjohnm as a good cardiologist to follow giving (what strikes me as) an honest take of post-vax myocarditis in young people.
His most recent podcast for @Medscape's This Week in Cardiology is an informative listen:
medscape.com/viewarticle/95…
1/5
3/5 I am not anti-vax (at all). I know a 37 year old in the ICU right now w/COVID who declined the vaccine & for this person, that was a risky choice (not to get vaccinated) but for healthy kids, we need to acknowledge their relatively very low risk of severe COVID.
2/5 "We have a.. number of definite cases of cardiac injury among previously totally normal kids & yet I'm not observing much concern...in the media..Compare the reaction to this vax-linked event with the extreme angst many experts displayed for myocarditis after COVID" @drjohnm
Read 6 tweets
Tracy Høeg, MD, PhD Profile picture
5 May
Our @CDCDirector proposes the US should diverge from the rest of the world & @WHO guidelines & have children wear masks outdoors while playing contact sports like soccer.
Available scientific evidence indicates this will not help control the pandemic, but will be harmful. See 🧵
1. Study of >91,000 *youth soccer* players over last summer and only ONE transmission event suspected, lead author says not known if transmission was indoors or outdoors or actually from home. medrxiv.org/content/10.110…
2. Univ of Wis study looking at >30,000 high school athletes w/2390 COVID cases; 5 from school, 1 from sports. Sport mask use *not correlated* w/incidence (of course as only 1 case of covid spread during sports!). medrxiv.org/content/10.110…
Read 10 tweets
Tracy Høeg, MD, PhD Profile picture
12 Mar
This morning, I testified as an expert physician epidemiologist on COVID in schools for a House of Representatives Round Table. It was a fascinating and productive experience. To me, the most important messages were as follows:
1. It is counter-productive to blame school districts/teachers for prolonged school closures when the message we are getting from the CDC is that schools are not safe at X amount of community spread/X amount of distance between students/until strict ventilation standards are met
We scientists know none of the above are based in K-12 school reopening science. We need a unified message from our CDC that is evidence-based which facilitates opening asap with simple, straight-forward, achievable mitigation strategies.
Read 8 tweets

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