Lazarus Long Profile picture
Oct 24, 2022 12 tweets 7 min read Read on X
#RSVisAirborne, so wear an N95.

The Respiratory Syncytial Virus IS airborne🧵.

If you say it's not? Check your level of aerosol knowledge.

Because you are probably going to cite Hall, who tested cuddlers, touchers, and sitters with sick babies.
Copy doi.org/10.1016/S0022-…

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Full article in screenshots below.
This study is worthless as it was confounded by:

❌ Time.

Cuddlers 2-4 hours, sitters exactly 3, touchers went into rooms for unknown period of time. Those rooms were previously inhabited by an infected baby. Infectious aerosols would still have been floating.
❌ Ventilation.

We don't know the ACH of the room each baby was in. Was it the same room even?

❌ Aerosol production. People produce more aerosols when yelling. A crying baby will produce more aerosols than a quiet baby.

This is particularly important as more cuddlers were
infected than touchers than sitters.

It should be noted that sitters are a test of far field aerosols.

❌ We also don't know if the sitters were sitting in a location that had a ventilation return grill between them and the baby. Would easily explain lack of far field
infection.

Cuddlers are a test of near field aerosols and droplets....and those subjects got the most sick. Which is typical of aerosols - this is why the UK CoVid Human Challenge declined to test aerosols.

Let's move on from that study which is cited by every IPC org.
#RSVisAirborne - as shown by this study.

6 ACH documented..and still infectious RSV (👇) was harvested from the air up to 15 feet away.

Diagram of the impactor collection points 👇 as well.

atsjournals.org/doi/full/10.11…
While reviewing this topic of #RSVisAirborne, this caught my attention:

"Healthcare-acquired infections (HAIs) continue to persist in hospitals, despite the use of increasingly strict infection-control precautions."

Are you a doctor and have felt the harsh glare of IPC?
Aren't you tired of being told you must have done something wrong?

That you must have not worn your surgical mask just right? Or you must not have washed your hands enough.

Maybe it's time you get a group of doctors and push back on your hospital's droplet based idiocy.
Because it's not just your health that depends on it.

It's all of those babies with RSV in pediatrics.

This study was done in 2015. Babies are grouped by symptoms. Not by virus.

Care for some cross contamination from the CoVid/ RSV/ Influenza Buffet?

IPC ...time to wake up.
Ok, let's layer on some more info.

"(RSV) is the single most important cause of lower respiratory tract infection (LRTI) in infants and young children"

Guess what folks? Droplets don't jump and skip past your uvula.

Aerosols do-they just flow on past.

academic.oup.com/jid/article/22…
Not a big fan of this study, but some might like it.

"The viral load in nasopharyngeal aspirates (NPA) and air samples were measured."

2 of 3 RSV patients had "...air dispersal of the virus(es) compatible with their NPA results."

#RSVisAirborne

cambridge.org/core/journals/…

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More from @LazarusLong13

Mar 3
A doctor complaining about wearing N95s? Thread foreshadow in the gif 👇.

Dr. Sax, you should read this.

The arrogance of medical doctors thinking they know better than the CDC NIOSH and OSHA?

This comes as no surprise.
Imagine if an asbestos worker, or a tech working in BioSafety Lab was complaining about this.

But somehow, doctors making over $200,000 get carte blanche and and a piece in the @NEJM Voices.

And he does have a loud voice.
This is Dr. Sax, Clinical Director, Division of Infectious Diseases (ID), at THE Harvard hospital. In 2014, he wrote about how ID docs only make $174,000.

He probably makes northwards of $269,000.

This is very, very relevant.

You see, he is put out by the inconvenience Image
Read 23 tweets
Feb 27
From the ZeroCovid sub on Reddit.

How DO we do it?

Hyper vigilance, constant exposure calculations, discussing and taking precautions?

How do I do it?

Quick thread. I would like to hear covid conscious folks opinions on this:  I have long covid (mecfs + pots + mcas). I’ve been sick to varying degrees since 2022. My life has been severely affected by this. At this point, I can’t work. I am mostly housebound, recovering slowly but I still have to spend some days in bed. Recovery from this is awful, especially because it’s not widely understood.  With all that said. I still feel like, for me, a life full of hyper vigilance, constant exposure calculations, discussing and taking precautions…I can’t do it. I don’t want to live that way.  How can I approach t...
I don't do it.

I don't do exposure calculations.

I don't have hyper vigilance.

I am Vax, Mask, and Relax.

For me, it's just a series of habits now. Drive to the wherever, hit parking lot, put on N95. Get out of car. Stays on until I get back into the car.
A new vaccine comes out? I get it.

I go stay in a hotel?

2nd floor Motel 6 with no shared HVAC (has the PTAC) . Open door/windows for one hour until complete air exchange.

Go through a drive through? N95 on before window is rolled down. Drive away? I roll down both to
Read 6 tweets
Feb 26
After reading a study, and reaching for my phone, if the first thing I do is check to see if I have @'d someone in the past?

That's not a good sign.

I have never @'d them, and this is not directed @ them.

But this IS a debunk thread.

And it starts with who.

/1
Study here. Before you read it?

This thread is about providing context. Read the thread, @SalvMattera's comments, AND THEN, read the study.

0/10 from me.

thelancet.com/journals/lanep…
Who paid for it? The Dutch government - who has been spectacularly almost Tegnell-like in their downplaying of LongCovid and masks.

Lead authors are from RIVM, their CDC.

RIVM was antimask even when they FINALLY recommended masks in OCTOBER 2020.

nltimes.nl/2020/10/03/dut…Image
Image
Read 13 tweets
Dec 21, 2025
Oh, we are cooked. Just cooked.

"Brain Mitochondrial dysfunction, known for ~20 years is finally recognized as a central upstream driver of Alzheimer’s disease (AD), not just a downstream effect."

And SARS2's targeting of mitochondria is well-known.

Even in the brain.
/1 We identified dysregulation of mitochondrial and synaptic pathways in deep-layer excitatory neurons and upregulation of neuroinflammation in glia, consistent across both mRNA and protein. Remarkably, these alterations overlapped substantially with changes in age-related neurodegenerative diseases, including Parkinson’s disease and Alzheimer’s disease. Our work, combining multiple experimental and analytical methods, demonstrates the brain-wide impact of severe acute/subacute COVID-19, involving both cortical and subcortical regions, shedding light on potential therapeutic targets within pat...
@LauraMiers, in case you don't have it.

nature.com/articles/s4358…
@LauraMiers This is yet another reason why I N95.

Read 6 tweets
Dec 17, 2025
@neiljshaw - — a few tips on your excellent article from a clean air advocate

"Consider Wearing a Mask" ?

No, "It is incredibly important to wear a well-fitting mask such as a N95, KN95, or KF94, for the best protection."

You two are doing Image
public health with this article.

Public health is best done with simple clear instructions.

No:
"These masks act as a barrier, reducing the spread of respiratory droplets when people talk, sneeze or cough."

Yes:
"These masks act as a HEPA air cleaner for the face,
cleaning the air of respiratory aerosols when people breathe, talk, sneeze or cough."

The barrier carries the idea of an immovable wall. Unable to be penetrated by things like oxygen and CO2 - which feeds antimaskers.

As an who debunks antimaskers, it is
Read 9 tweets
Dec 11, 2025
As an anonymous clean air advocate, I've put a bit of thought into how to present, well, my expertise.

If someone were to say, "How do I know you know what you are talking about? Are you a doctor, or a virologist?"

To which, I would say...."No, but that's a good thing.
/1
I have focused on aerosol and masking science. Because it is those fields that give us the most information on how airborne particles, aerosols, get from Person A to Person B.

My expertise is derived from the great studies of Dr. Lindsay Marr, MacArthur recipient. Dr. Prather,
double National Academy member, Dr Milton, inventor of the Gesundheit, aerosol scientist and medical doctor; Dr Coleman whose group found that duckbill N95s captured 98% of emitted respiratory aerosols, and more excellent individual aerosol scientists.
Read 17 tweets

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