Dear colleagues.

Airborne disease control requires the professional advice of engineers.

It’s an actual thing.

Engineering.

Exams. Bits of paper saying you know what you are doing. Post graduate qualifications. Research. Regulations.

We shouldn’t make stuff up.->
It’s fine to ask questions, and cross pollinate knowledge… but at some point we have to also be humble and willing to learn.

If you have a building where airborne disease is spreading… the building needs fixing. Ask the building experts.
Indoor air quality and aerosol/particle control is something that engineers and scientists have been working on long before we started trying to apply it to COVID-19.

Disease control in buildings has been thoroughly researched by engineers and applied in hospitals too.
Bottom line… learning from each other is good. We need to recognise our colleagues expertise.

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More from @NjbBari3

12 Jul
I need a hug. I have spent more than an hour on the phone to a loved one in the UK. The descriptions of everyday life there are terrible. From the mental health and moral injuries in essential workers and others, to the graphic description of how people’s health has changed.
On the TV screens joy… but in homes a sense of nervousness. Despite being vaccinated, people don’t really know what to expect as the third wave rolls in… and memories of trauma are as fresh as can be…
Particularly touching… watching a healthy taxi driver, that used to be chatty and energetic, shuffling to his car in the morning, to breathless for banter. 🥺
Read 8 tweets
11 Jul
@profdalefisher on @60Mins says that either you’re are vaccinated or not. That we have to “live with it” & that it will spread asymptomatically between most so it will be impossible to contact trace.

A brave new world where we leave those that don’t respond to vaccine to die?
My view:

It will be those vulnerable people that we left to die that will be immunocompromised. Immunocompromised persons are more likely to produce a wide variety of strains.

Also, it doesn’t feel right to do this.

(If we haven’t done so already.)
Before someone says mAb… not only have variants reduced the efficacy of our vaccines, they also reduce the efficacy of mAbs.
Read 5 tweets
11 Jul
Regarding the New Zealand RSV outbreak.

NZ has had very little community masking and UK has had a lot.

NZ has had good covid control, UK has not.

Both have had RSV outbreaks. They happen.
We’ve also seen RSV circulating in Sydney all year. Very little masking all of 2020.

It’s not the masks causing RSV outbreaks. However if you wanted to control an RSV outbreak, you could try masks…
Any evidence of an “immunity deficit” in children because we have not kept their immune systems strong by exposing them to COVID-19 is not apparent to me at this time.

Rebound outbreaks may however be severe,so we should titrate the relaxation of restrictions carefully.
Read 4 tweets
15 Jun
“Ovarian injury, including declined ovarian reserve and reproductive endocrine disorder, can be observed in women with COVID-19. More attention should be paid to their ovarian function under this pandemic, especially regarding reproductive-aged women.”frontiersin.org/articles/10.33…
Two studies coming to opposite conclusions about COVID-19 and ovarian function?

The first measures AMH, an indirect marker of ovarian reserve during natural cycles. The second measures a hormone inside the ovary and female steroid hormones produce by the ovary but during IVF>
Read 14 tweets
14 Jun
Well…some good news. Being fully vaccinated does still appear to confer a decent amount of protection from ending up on the dreaded ventilators, or in a box. 👍🏼
Bad but expected news, infection certainly more possible with delta variant in fully vax people (COVID-19 is chipping away at vaccine efficacy).

It is more severe too (more chance of needing hospital care if infected and not fully vaccinated.
This means that large numbers of people remain at risk of severe illness in the UK, as many are partially or still unvaccinated. Suspect this new data will be fed into the model and we will get a more accurate idea of what the “exit wave” will look like in the UK.
Read 8 tweets
14 Jun
In light of today’s article detailing the fact that NSW is very comfortable with its current quarantine set up, despite the fact that we had to pause returns from a disaster zone…

How comes we can set up accomodation for students, that are engineered, but no one else?
This room is only available if you pay thousands of dollars in course fees? Should we enroll the 200 children that are unaccompanied minors stranded in India into a course at UNSW?
I think this is a good course… looks like fun.
Read 4 tweets

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