WHO Overturns Dogma on Airborne Disease Spread. The CDC Might Not Act on It.
10almonds is reader-supported. We may, at no cost to you, receive a portion of sales if you purchase a product through a link in this article.
The World Health Organization has issued a report that transforms how the world understands respiratory infections like covid-19, influenza, and measles.
Motivated by grave missteps in the pandemic, the WHO convened about 50 experts in virology, epidemiology, aerosol science, and bioengineering, among other specialties, who spent two years poring through the evidence on how airborne viruses and bacteria spread.
However, the WHO report stops short of prescribing actions that governments, hospitals, and the public should take in response. It remains to be seen how the Centers for Disease Control and Prevention will act on this information in its own guidance for infection control in health care settings.
The WHO concluded that airborne transmission occurs as sick people exhale pathogens that remain suspended in the air, contained in tiny particles of saliva and mucus that are inhaled by others.
While it may seem obvious, and some researchers have pushed for this acknowledgment for more than a decade, an alternative dogma persisted — which kept health authorities from saying that covid was airborne for many months into the pandemic.
Specifically, they relied on a traditional notion that respiratory viruses spread mainly through droplets spewed out of an infected person’s nose or mouth. These droplets infect others by landing directly in their mouth, nose, or eyes — or they get carried into these orifices on droplet-contaminated fingers. Although these routes of transmission still happen, particularly among young children, experts have concluded that many respiratory infections spread as people simply breathe in virus-laden air.
“This is a complete U-turn,” said Julian Tang, a clinical virologist at the University of Leicester in the United Kingdom, who advised the WHO on the report. He also helped the agency create an online tool to assess the risk of airborne transmission indoors.
Peg Seminario, an occupational health and safety specialist in Bethesda, Maryland, welcomed the shift after years of resistance from health authorities. “The dogma that droplets are a major mode of transmission is the ‘flat Earth’ position now,” she said. “Hurray! We are finally recognizing that the world is round.”
The change puts fresh emphasis on the need to improve ventilation indoors and stockpile quality face masks before the next airborne disease explodes. Far from a remote possibility, measles is on the rise this year and the H5N1 bird flu is spreading among cattle in several states. Scientists worry that as the H5N1 virus spends more time in mammals, it could evolve to more easily infect people and spread among them through the air.
Traditional beliefs on droplet transmission help explain why the WHO and the CDC focused so acutely on hand-washing and surface-cleaning at the beginning of the pandemic. Such advice overwhelmed recommendations for N95 masks that filter out most virus-laden particles suspended in the air. Employers denied many health care workers access to N95s, insisting that only those routinely working within feet of covid patients needed them. More than 3,600 health care workers died in the first year of the pandemic, many due to a lack of protection.
However, a committee advising the CDC appears poised to brush aside the updated science when it comes to its pending guidance on health care facilities.
Lisa Brosseau, an aerosol expert and a consultant at the Center for Infectious Disease Research and Policy in Minnesota, warns of a repeat of 2020 if that happens.
“The rubber hits the road when you make decisions on how to protect people,” Brosseau said. “Aerosol scientists may see this report as a big win because they think everything will now follow from the science. But that’s not how this works and there are still major barriers.”
Money is one. If a respiratory disease spreads through inhalation, it means that people can lower their risk of infection indoors through sometimes costly methods to clean the air, such as mechanical ventilation and using air purifiers, and wearing an N95 mask. The CDC has so far been reluctant to press for such measures, as it updates foundational guidelines on curbing airborne infections in hospitals, nursing homes, prisons, and other facilities that provide health care. This year, a committee advising the CDC released a draft guidance that differs significantly from the WHO report.
Whereas the WHO report doesn’t characterize airborne viruses and bacteria as traveling short distances or long, the CDC draft maintains those traditional categories. It prescribes looser-fitting surgical masks rather than N95s for pathogens that “spread predominantly over short distances.” Surgical masks block far fewer airborne virus particles than N95s, which cost roughly 10 times as much.
Researchers and health care workers have been outraged about the committee’s draft, filing letters and petitions to the CDC. They say it gets the science wrong and endangers health. “A separation between short- and long-range distance is totally artificial,” Tang said.
Airborne viruses travel much like cigarette smoke, he explained. The scent will be strongest beside a smoker, but those farther away will inhale more and more smoke if they remain in the room, especially when there’s no ventilation.
Likewise, people open windows when they burn toast so that smoke dissipates before filling the kitchen and setting off an alarm. “You think viruses stop after 3 feet and drop to the ground?” Tang said of the classical notion of distance. “That is absurd.”
The CDC’s advisory committee is comprised primarily of infection control researchers at large hospital systems, while the WHO consulted a diverse group of scientists looking at many different types of studies. For example, one analysis examined the puff clouds expelled by singers, and musicians playing clarinets, French horns, saxophones, and trumpets. Another reviewed 16 investigations into covid outbreaks at restaurants, a gym, a food processing factory, and other venues, finding that insufficient ventilation probably made them worse than they would otherwise be.
In response to the outcry, the CDC returned the draft to its committee for review, asking it to reconsider its advice. Meetings from an expanded working group have since been held privately. But the National Nurses United union obtained notes of the conversations through a public records request to the agency. The records suggest a push for more lax protection. “It may be difficult as far as compliance is concerned to not have surgical masks as an option,” said one unidentified member, according to notes from the committee’s March 14 discussion. Another warned that “supply and compliance would be difficult.”
The nurses’ union, far from echoing such concerns, wrote on its website, “The Work Group has prioritized employer costs and profits (often under the umbrella of ‘feasibility’ and ‘flexibility’) over robust protections.” Jane Thomason, the union’s lead industrial hygienist, said the meeting records suggest the CDC group is working backward, molding its definitions of airborne transmission to fit the outcome it prefers.
Tang expects resistance to the WHO report. “Infection control people who have built their careers on this will object,” he said. “It takes a long time to change people’s way of thinking.”
The CDC declined to comment on how the WHO’s shift might influence its final policies on infection control in health facilities, which might not be completed this year. Creating policies to protect people from inhaling airborne viruses is complicated by the number of factors that influence how they spread indoors, such as ventilation, temperature, and the size of the space.
Adding to the complexity, policymakers must weigh the toll of various ailments, ranging from covid to colds to tuberculosis, against the burden of protection. And tolls often depend on context, such as whether an outbreak happens in a school or a cancer ward.
“What is the level of mortality that people will accept without precautions?” Tang said. “That’s another question.”
KFF Health News is a national newsroom that produces in-depth journalism about health issues and is one of the core operating programs at KFF—an independent source of health policy research, polling, and journalism. Learn more about KFF.
Subscribe to KFF Health News’ free Morning Briefing.
Don’t Forget…
Did you arrive here from our newsletter? Don’t forget to return to the email to continue learning!
Recommended
Learn to Age Gracefully
Join the 98k+ American women taking control of their health & aging with our 100% free (and fun!) daily emails:
-
Holistic Approach To Resculpting A Face Affected By Hypothyroidism, PCOS, Or Menopause
10almonds is reader-supported. We may, at no cost to you, receive a portion of sales if you purchase a product through a link in this article.
Mila Magnani has PCOS and hypothyroidism, but the principles are the same for menopause because both menopause and PCOS are a case of a hormone imbalance resulting in androgenic effects, so there’s a large amount of overlap.
Obviously, a portion of the difference in the thumbnail is a matter of angle and make-up, but as you can see in the video itself, there’s also a lot of genuine change underneath, too:
Stress-free method
Firstly, she bids us get lab tests and work with a knowledgeable doctor to address potential thyroid, hormonal, or nutrient imbalances. Perhaps we already know at least part of what is causing our problems, but even if so, it doesn’t hurt to take steps to rule the others out. Imagine spending ages unsuccessfully battling PCOS or menopause, only to discover it was a thyroid issue, and you were fighting the wrong battle!
Magnani used a natural route to manage her PCOS and hypothyroidism, while acknowledging that medication is fine too; it’s usually cheaper and more convenient—and there’s a lot more standardization for medications than there is for supplements, which makes it a lot easier to navigate, find what works, and keep getting the exact same thing once it does work.
Other things she recommends include:
- Lymphatic drainage: addressing the lymphatic system to reduce puffiness. Techniques include lymphatic drainage massage, stretching, rebounding (trampoline), and dry brushing. She emphasizes that for facial de-puffing, it’s important to treat the whole upper body, not just the face.
- Low-impact exercise: she switched from high-intensity workouts to low-impact exercises like nature walking and gentle stretching to reduce stress and improve health.
- Nervous system regulation: she worked on nervous system regulation by means of journaling, breathwork, and stimulating the vagus nerve, which improved sleep and reduced stress and anxiety. These things, of course, have knock-on benefits for almost every part of health.
- Diet: she adopted a low-glycemic diet, reduced salt intake, and cooked at home to avoid water retention caused by high sodium in restaurant meals.
- Natural diuretics: she uses teas like hibiscus and chamomile to reduce puffiness after consuming high-sodium foods.
- Sauna and sweating: consider a sauna mat or hot baths to detox and reduce swelling; that’s what she uses in lieu of a convenient sauna.
You may be wondering how quickly you can expect results: it took 3–6 months of daily effort to see significant changes, and she now maintains the routine less frequently (every 2–3 days, instead of daily).
For more on all this, enjoy:
Click Here If The Embedded Video Doesn’t Load Automatically!
Want to learn more?
You might also like to read:
- What Does “Balance Your Hormones” Even Mean?
- 7-Minute Face Fitness For Lymphatic Drainage & Youthful Jawline
- Saunas: Health Benefits (& Caveats)
Take care!
Share This Post
-
Top Foods Against Neuroinflammation
10almonds is reader-supported. We may, at no cost to you, receive a portion of sales if you purchase a product through a link in this article.
Chronic inflammation is something you might feel in your joints, but it will usually be in the brain too. There, neuroinflammation can disrupt brain function, affecting stress responses, mood, cognition, and even alter brain structure. It’s also heavily implicated in the pathogenesis of various forms of dementia.
What to do about it
Dr. Tracey Marks, psychiatrist, bids us eat:
- Fatty fish: omega-3-rich fish like salmon reduce neuroinflammation.
- Leafy greens: spinach, kale, and collards protect brain cells and support neurotransmitter production.
- Berries: blueberries and strawberries improve memory and protect neurons.
- Nuts and seeds: walnuts, almonds, and flaxseeds support brain health and reduce inflammation.
- Turmeric: curcumin combats inflammation and supports neuron growth (best with supplements).
- Fermented foods: yogurt and sauerkraut improve gut health, benefiting the brain via the gut-brain axis; not just the vagus nerve, but also, remember that various neurotransmitters (including serotonin) are made in the gut.
Of course, you should also avoid alcohol, nicotine, red meat, processed meat, and ideally also white flour products, and sugary foods (unless they are also rich in fiber, like whole fruit).
For more on each of these, enjoy:
Click Here If The Embedded Video Doesn’t Load Automatically!
Want to learn more?
You might also like to read:
How to Prevent (or Reduce) Inflammation
Take care!
Share This Post
-
Peony Against Inflammation & More
10almonds is reader-supported. We may, at no cost to you, receive a portion of sales if you purchase a product through a link in this article.
Yes, this is about the flower, especially white peony (Paeonia lactiflora), and especially the root thereof (Paeoniae radix alba). Yes, the root gets a different botanical name but we promise it is the same plant. You will also read about its active glycoside paeoniflorin, and less commonly, albiflorin (a neuroprotective glycoside present in the root).
It’s one of those herbs that has made its way out of Traditional Chinese Medicine and into labs around the world.
It can be ingested directly as food, or as a powder/capsule, or made into tea.
Anti-inflammatory
Peony suppresses inflammatory pathways, which thus reduces overall inflammation. In particular, this research review found:
❝Pharmacologically, paeoniflorin exhibits powerful anti-inflammatory and immune regulatory effects in some animal models of autoimmune diseases including Rheumatoid Arthritis (RA) and Systemic Lupus Erythematosus (SLE)❞
The reviewers also (albeit working from animal models) suggest it may be beneficial in cases of kidney disease and liver disease, along with other conditions.
Here’s a larger review, which also has studies involving humans (and in vivo studies), that found it to effectively help treat autoimmune conditions including rheumatoid arthritis and psoriasis, amongst others:
❝Modern pharmacological research on TGP is based on the traditional usage of PRA, and its folk medicinal value in the treatment of autoimmune diseases has now been verified. In particular, TGP has been developed into a formulation used clinically for the treatment of autoimmune diseases.
Based on further research on its preparation, quality control, and mechanisms of action, TGP is expected to eventually play a greater role in the treatment of autoimmune diseases. ❞
(TGP = Total Glucosides of Paeony)
Antidepressant / Anxiolytic
It also acts as a natural serotonin reuptake inhibitor (as per many pharmaceutical antidepressants), by reducing the expression of the serotonin transporter protein:
Gut Microbiota-Based Pharmacokinetics and the Antidepressant Mechanism of Paeoniflorin
(remember, most serotonin is produced in the gut)
Here’s how that played out when tested (on rats, though):
Against PMS and/or menopause symptoms
Peony is widely used in Traditional Chinese Medicine to reduce these symptoms in general. However, we couldn’t find a lot of good science for that, although it is very plausible (as the extract contains phytoestrogens and may upregulate estrogen receptors while dialling down testosterone production). Here’s the best we could find for that, and it’s a side-by-side along with licorice root:
❝Paeoniflorin, glycyrrhetic acid and glycyrrhizin decreased significantly the testosterone production but did not change that of delta 4-androstenedione and estradiol. Testosterone/delta 4-androstenedione production ratio was lowered significantly by paeoniflorin, glycyrrhetic acid and glycyrrhizin❞
Effect of paeoniflorin, glycyrrhizin and glycyrrhetic acid on ovarian androgen production
(note: that it didn’t affect estradiol levels is reasonable; it contains phytoestrogens after all, not estradiol—and in fact, if you are taking estradiol, you might want to skip this one, as its phytoestrogens could compete with your estradiol for receptors)
Want to try some?
We don’t sell it, but here for your convenience is an example product on Amazon 😎
Enjoy!
Share This Post
Related Posts
-
Sleep Through Insomnia – by Dr. Brandon Peters
10almonds is reader-supported. We may, at no cost to you, receive a portion of sales if you purchase a product through a link in this article.
First, what this is not: a guide to get better sleep tonight.
Rather, what it is: a guide to get better sleep in the near future (six weeks).
The way it delivers this is primarily Cognitive Behavioral Therapy for Insomnia (CBT-I), in 6 weekly lessons, each divided into 3 activities:
- Reflection
- Education
- Setting goals
Now, all parts are important, but we’d say the biggest value here is in the education segment, in part because it helps the reader understand why the reflection is important, and how to usefully set the goals.
“Reflection” may sound quite wishy-washy, but in fact it is very science-based, with questions as prompts, which effectively amount to the “gathering data” part of science.
“Setting goals”, for its part, is intended to be a progressive, step-by-step approach to get you to where you want to be with your sleep.
The style is instructional pop-science, with everything made easy to understand. There are an abundance of scientific references for those who wish to delve further, and sometimes he does go into more neurological detail than a book written by a psychologist might (Dr. Peters being a medical doctor, board-certified in neurology and sleep medicine, and with extensive training in CBT-I).
Bottom line: if you’d like to sleep better and you have the will to commit to a 6-week program (which will not ask anything arduous of you, but you will need to show up for it and do the things), then this book can give you a much better long-term fix than telling you to change your sheets and put your phone away.
Click here to check out Sleep Through Insomnia, and sleep easy!
Don’t Forget…
Did you arrive here from our newsletter? Don’t forget to return to the email to continue learning!
Learn to Age Gracefully
Join the 98k+ American women taking control of their health & aging with our 100% free (and fun!) daily emails:
-
A Correction, And A New, Natural Way To Boost Daily Energy Levels
10almonds is reader-supported. We may, at no cost to you, receive a portion of sales if you purchase a product through a link in this article.
It’s Q&A Day at 10almonds!
Have a question or a request? You can always hit “reply” to any of our emails, or use the feedback widget at the bottom!
In cases where we’ve already covered something, we might link to what we wrote before, but will always be happy to revisit any of our topics again in the future too—there’s always more to say!
As ever: if the question/request can be answered briefly, we’ll do it here in our Q&A Thursday edition. If not, we’ll make a main feature of it shortly afterwards!
So, no question/request too big or small
First: a correction and expansion!
After yesterday’s issue of 10almonds covering breast cancer risks and checks, a subscriber wrote to say, with regard to our opening statement, which was:
“Anyone (who has not had a double mastectomy, anyway) can get breast cancer”
❝I have been enjoying your newsletter. This statement is misleading and should have a disclaimer that says even someone who has had a double mastectomy can get breast cancer, again. It is true and nothing…nothing is 100% including a mastectomy. I am a 12 year “thriver” (I don’t like to use the term survivor) who has had a double mastectomy. I work with a local hospital to help newly diagnosed patients deal with their cancer diagnosis and the many decisions that follow. A double mastectomy can help keep recurrence from happening but there are no guarantees. I tried to just delete this and let it go but it doesn’t feel right. Thank you!❞
Thank you for writing in about this! We wouldn’t want to mislead, and we’re always glad to hear from people who have been living with conditions for a long time, as (assuming they are a person inclined to learning) they will generally know topics far more deeply than someone who has researched it for a short period of time.
Regards a double mastectomy (we’re sure you know this already, but noting here for greater awareness, prompted by your message), a lot of circumstances can vary. For example, how far did a given cancer spread, and especially, did it spread to the lymph nodes at the armpits? And what tissue was (and wasn’t) removed?
Sometimes a bilateral prophylactic mastectomy will leave the lymph nodes partially or entirely intact, and a cancer could indeed come back, if not every last cancerous cell was removed.
A total double mastectomy, by definition, should have removed all tissue that could qualify as breast tissue for a breast cancer, including those lymph nodes. However, if the cancer spread unnoticed somewhere else in the body, then again, you’re quite correct, it could come back.
Some people have a double mastectomy without having got cancer first. Either because of a fear of cancer due to a genetic risk (like Angelina Jolie), or for other reasons (like Elliot Page).
This makes a difference, because doing it for reasons of cancer risk may mean surgeons remove the lymph nodes too, while if that wasn’t a factor, surgeons will tend to leave them in place.
In principle, if there is no breast tissue, including lymph nodes, and there was no cancer to spread, then it can be argued that the risk of breast cancer should now be the same “zero” as the risk of getting prostate cancer when one does not have a prostate.
But… Surgeries are not perfect, and everyone’s anatomy and physiology can differ enough from “textbook standard” that surprises can happen, and there’s almost always a non-zero chance of certain health outcomes.
For any unfamiliar, here’s a good starting point for learning about the many types of mastectomy, that we didn’t go into in yesterday’s edition. It’s from the UK’s National Health Service:
NHS: Mastectomy | Types of Mastectomy
And for the more sciency-inclined, here’s a paper about the recurrence rate of cancer after a prophylactic double mastectomy, after a young cancer was found in one breast.
The short version is that the measured incidence rate of breast cancer after prophylactic bilateral mastectomy was zero, but the discussion (including notes about the limitations of the study) is well worth reading:
Breast Cancer after Prophylactic Bilateral Mastectomy in Women with a BRCA1 or BRCA2 Mutation
❝[Can you write about] the availability of geriatric doctors Sometimes I feel my primary isn’t really up on my 70 year old health issues. I would love to find a doctor that understands my issues and is able to explain them to me. Ie; my worsening arthritis in regards to food I eat; in regards to meds vs homeopathic solutions.! Thanks!❞
That’s a great topic, worthy of a main feature! Because in many cases, it’s not just about specialization of skills, but also about empathy, and the gap between studying a condition and living with a condition.
About arthritis, we’re going to do a main feature specifically on that quite soon, but meanwhile, you might like our previous article:
Keep Inflammation At Bay (arthritis being an inflammatory condition)
As for homeopathy, your question prompts our poll today!
(and then we’ll write about that tomorrow)
Don’t Forget…
Did you arrive here from our newsletter? Don’t forget to return to the email to continue learning!
Learn to Age Gracefully
Join the 98k+ American women taking control of their health & aging with our 100% free (and fun!) daily emails:
-
Sleep Smarter – by Shawn Stevenson
10almonds is reader-supported. We may, at no cost to you, receive a portion of sales if you purchase a product through a link in this article.
You probably know to avoid blue light before bed, put a curfew on the caffeine, and have fresh bedding. So, what does this book offer that’s new?
As the subtitle suggests, it’s 21 tips for better sleep, so if even half of them are new, then it’ll still be adding value.
This is a book review, not a book summary, but to give an idea of the kind of thing you might not already know: there’s a section on bedroom houseplants! For example…
- Which plants filter the air best according to NASA, rather than “according to tradition”
- Which plants will thrive in what will hopefully be a cool dark environment
- Which plants produce oxygen even at night, rather than just during the day
The writing style is personable without losing clarity or objectivity:
- We read personal anecdotes, and we read science
- We get “I tried this”, and we get “this sleep study found such-and-such”
- We get not just the “what”, but also the “why” and the “how”
We get the little changes that make a big difference—sometimes the difference between something working or not!
Bottom line: if you’d like to get better sleep and a blue light filter hasn’t wowed you and changed your life, this book will bring your sleep knowledge (and practice) to the next level.
Don’t Forget…
Did you arrive here from our newsletter? Don’t forget to return to the email to continue learning!
Learn to Age Gracefully
Join the 98k+ American women taking control of their health & aging with our 100% free (and fun!) daily emails: