Why have CDC & WHO been unable to control the spread of COVID-19 Coronavirus disease?
Ironically, the cause of the real problem (roughly 95% of cases) has been know for the last 3 months by scientists …
The real threat is airborne floating aerosols… from talking. Our vocal cords vibrate vigorously when we talk … flipping off 100’s to 10,000’s of tiny tiny fine aerosol droplets (1 um & smaller) … go out our mouths … and float in the air … highly infectious … for at least 3 hours when trapped inside rooms…
This is not the problem:
People talking, without tight-fitting medical grade masks, emitting over 104 COVID coughs worth of fine aerosols, by talking loudly for just 5 minutes … is the problem … especially when talking indoors, where the highly infectious COVID fine aerosols continue to float, swirl & circulate out to 30 ft, over the next 4 – 6 hours.
Think: COVID-19 infected people, walking around talking … with no symptoms … while their throats are making the PEAK amounts of SARS-CoV-2 virus, during the last 2 days before symptoms.
For comparison …
1 cough = 60 highest risk – most infectious fine aerosol droplets
Talking Aloud for 5 minutes Creates Far Far More of the Highest Risk Aerosols:
Soft talking for just 5 minutes => 750 fine aerosol droplets
…. equals => 12 mouth-uncovered coughs
Normal talking for just 5 min. => 1500 fine aerosol droplets
… equals =>25 mouth-uncovered coughs
LOUD talking for 5 min. => 6,000 fine aerosol droplets
…equals => 100 uncovered coughs
Those 750 or 1500 or 6000 fine aerosol droplets float around inside rooms … for over 3 hours … remaining highly infectious the whole 3 hrs.
What Can we Do?
Wear a tight fitting medical grade mask** when inside public places… Need to eat or drink? => Have a fan or a breeze blowing fresh air across your face, to disperse ~ dilute~out fine aersols to safe levels …. Have conversations without masks when outside with 8 ft of Social Distancing, where the wind – breezes blow away your fine aerosols from talking (dilution) …
Then consider the special 1 in 50 people who are … “Super-emitters/Super-Spreaders”
The Super-Spreader people >= spew 15,000 fine aerosols in 5 minutes of LOUD talking
… equal to 250 uncovered-mouth coughs … in just 5 min of talking.
Think about all those invisible floating droplets … when walking into an OXXO minimart …. or in a combi bus … or any small enclosed space like a bank ATM room …. because the fine aerosol droplets slowly float, swirl & circulate between 6 meters – 9 meters … filling an OXXO … for the next 3 hours … with the worst, riskiest highly-contagious aerosols … so small that they are inhaled deeply into our throats – slipping around all masks with leaks…
Cloth masks … are proven to leak at least 40% to 70%, because it takes at least 12 layers of cloth (16 layers of cotton cloth) to equal just one good medical grade mask. … Do NOT trust a cloth mask.
**Note that good surgeons & Aerosol Scientists often wear 2 masks for the best protection, in the most critical situations. Wearing a flat, tight fitting good medical grade mask tight against your lips & nose acts like a condom, to protect an outer cup-cone N95 or KN95 mask. The combination of 2 masks seals much better around the nose & cheeks than one mask, giving full 99.9% levels of protection with both medical grade masks fit tightly.
Now do we understand why CDC’s & WHO’s advice to NOT wear masks… is exactly why Coronavirus has spread so quickly in the USA ?
Then, consider the Medical Doctor’s guess of “6 feet of Social Distancing”. The “6 ft Rule” only works if the talking-person’s invisible aerosols move out in all directions, evenly, at the same rates (like some diffuse mist or fog). Instead, scientists have proven for over 40 yrs that fine aerosols, when there are no fans or breezes, fine aerosols move exactly like cigarette smoke, moving outward in plumes – streams of concentrated aerosols … invisibly floating slowly out 8 ft to 10 ft, like forked-tongues, from the infected talker who is not wearing a medical-grade mask … until they disperse to safe-to-inhale levels at 8 – 10 ft when there is fresh air. That means the scientific rule is … 8 – 10 ft of Social Distancing, plus fresh air, when you have your mask off, like when eating or drinking.
Fortunately, all the facts above have been known by scientists, from 2 years ago to 16 yrs ago, by their reading ALL the very good scientific research done on SARS-CoV-1 & on other Coronaviruses.
Read the details at these websites:
If you doubt these facts, consider the choir practice where just one COVID-infected singer, infected 60 other choir members … from them inhaling the sick-singers fine aerosols from talking & singing.
Touching things presents near infintesimal risks of transmitting COVID, because it takes roughly 1000 coronavirus particulates DEEP IN YOUR THROAT or Nasopharynx – which ONLY happens from inhaling aerosols …
Touching things … “fomite” or contacts as described by AS SEEN ON TV Medical Doctors is NOT THE PROBLEM … unless you collect an entire COVID sneeze’s goo and swab it deep into you throat. … It’s all about NOT inhaling COVID infected invisible fine aerosols.
~Stay safe ~
… Wear only a good medical grade mask … to protect yourself & others from COVID-19.
… If you don’t have a medical grade mask, like when eating or drinking, then stay 8 ft of Social Distancing from others (to allow the COVID fine aerosols to disperse to safe levels) … or have a fan blowing across your face to dilute the COVID aerosols from talking to safe low levels.
~ Stay well, stay informed, stay safe.
The Good Doctor Fry
Dr. Steven Michael Fry
Ph.D. Analytical Chemistry, Aerosol Science, Measurement Science, Public Health & Environment
Read on, MacDuff …
**If you need a mask.. read the comments below.