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ɪᴀɴ ᴍ. ᴍᴀᴄᴋᴀʏ, ᴘʜᴅ 🦠🤧🧬🥼🦟 Profile picture
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Aug 10 • 5 tweets • 3 min read
I'm not going to this year's Qld #Ekka but I am going to make scones.
And hot dogs.
And have strawberries & cream ice cream for desert tonight. And eat small chocolates.
They came out okay.
Jam then whipped cream (with vanilla and honey)
(not sorry @ketaminh)
Okay. I better stop. The rest of the family has moved on! 🐷
And if you still want to help The Prince of Charles Hospital Foundation who get funding from the strawberries & cream iceaream at @theekka, you can always visit @TheCommonGoodAU thecommongood.org.au/events/ and donate

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More from @MackayIM

ɪᴀɴ ᴍ. ᴍᴀᴄᴋᴀʏ, ᴘʜᴅ 🦠🤧🧬🥼🦟 Profile picture
Aug 3
We know masks/respirators mechanistically filter our particles–effectiveness varying with type, style, fit and use.

•They work in practice, not only in theory.

But that doesn't mean they work all the time.
The use of 'masks' (overarching term) 𝗰𝗮𝗻 reduce the risk of transmitting an airborne pathogen.
They are imperfect. They are not a panacea. They cannot be used alone. They are a leaky\"holey layer". This means that outbreaks & epidemics still progress.
If you define "work" as 100% effective, then yes, they absolutely fail. That’s a stupid definition by the way.

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Sadly, in the middle of a respiratory virus epidemic..
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ɪᴀɴ ᴍ. ᴍᴀᴄᴋᴀʏ, ᴘʜᴅ 🦠🤧🧬🥼🦟 Profile picture
Aug 2
#Flu in #Queensland, week to 24JUL2022
😷Total numbers continue to decline for another week
🤧Flu season is not done and dusted quite yet
🔵current data point(s) change in the subsequent week as outstanding results are finalised and reported
😷Percent positive with a moving average.
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😷Hospital admission numbers because of #flu, broken up by region of Qld, with historical context.
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Read 6 tweets
ɪᴀɴ ᴍ. ᴍᴀᴄᴋᴀʏ, ᴘʜᴅ 🦠🤧🧬🥼🦟 Profile picture
Jul 30
Masked but got infected?
It's not magic..
😷 Mask removed at a critical time, or
☁️In an unclean airspace so laden with virus aerosol that N95 (95% filtration and 5% not successfully filtered;surgical mask let's through much more) couldn't cope & you received an infectious dose
Room air will still get full of virus if...

☁️The air isn't being filtered, treated or rapidly replaced
😷Most keep wearing baggy surgical masks that aren't designed to filter much of what we exhale, just deflect it

It's time to understand that we should mask up(grade)
This is also about the mask...
😷💨 The mask you wear must be fit for purpose - cloth or surgical masks are better than nothing, but aren't intended to protect you from inhaling an infectious dose of virus-laden airborne particles
Read 9 tweets
ɪᴀɴ ᴍ. ᴍᴀᴄᴋᴀʏ, ᴘʜᴅ 🦠🤧🧬🥼🦟 Profile picture
Jul 20
🧬Detailed public-facing PCR data from a private lab in Queensland, Australia (thankyou🙏) showing #Flu down to 5.8% positivity (about 1 in 17 samples for COVID-19 testing are FluA positive).
•SARS-CoV-2 continues to rise, currently at 16.7% (1 in 6).
•RSV at 7.5% and slowly⬇ Image
🦠Rhinoviruses are, as usual, a major pathogen in causing acute respiratory infection and lab/healthcare-seeking behaviour.
🦠Human metapneumovirus (MPV), parainfluenza viruses (PIVs) and adenoviruses (AdVs) are on a slow rising trajectory Image
😷A reminder that whatever respiratory signs & symptoms bring a patient in for a test/Doctor's visit - many very different respiratory viruses can cause that disease. Only a good pathology laboratory test has a hope of identifying a cause.
Read 4 tweets
ɪᴀɴ ᴍ. ᴍᴀᴄᴋᴀʏ, ᴘʜᴅ 🦠🤧🧬🥼🦟 Profile picture
Jul 19
#Flu in #Queensland, week to 17JUL2022
😷Total numbers continue to decline for another week
🔵current data point(s) change in the subsequent week as outstanding results are finalised and reported Image
😷Percent positive with a moving average.
🤧Steadily declining now <10% positivity. Image
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ɪᴀɴ ᴍ. ᴍᴀᴄᴋᴀʏ, ᴘʜᴅ 🦠🤧🧬🥼🦟 Profile picture
Jul 16
A thread listing some studies that have evaluated some rapid antigen tests (RATs) against PCR, each other and sometimes different SARS-CoV-2 variants.
🧪In Australia, the Therapeutic Goods Administration has organised post-market review of RATs.
tga.gov.au/post-market-re…
At writing, there were 97 products of which 5 have been reviewed. This entailed use of cultured virus sensitivity testing.
🧪"Nearly all tests state in their IFU sensitivity values of > 90% for PCR-confirmed specimens. Such statements, being in strong contrast to the results of our study and to other independent evaluations"
eurosurveillance.org/content/10.280…
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