MASKS4ALL MOVEMENT, COVID19

A growing body of evidence suggests that masks for everyone might be a beneficial strategy. In the US that strategy has been rejected in order to encourage conserving PPE for health care providers.  In Czech Republic, where national leaders have successfully waged a masks4all campaign (in combination with quarantine), COVID19 GROWTH seems to have stabilized. I previously discussed droplet vs. aerosol spread. The WHO and CDC have officially labeled COVID19 as droplet spread.

Droplets fall to the floor and surfaces, they do not linger in the air. Disease transmission can occur by touching a contaminated surface and then touching your face. Droplets coughed or sneezed into your face (even from a distance) will transmit disease. Singing, yelling, or loud talking can probably do the same. Face to face conversation without cough or sneeze can transmit COVID19.

Aerosol represents smaller particles that linger in air for hours making a confined space infectious for hours and allowing for disease transmission just by breathing the air, a more contagious situation.

Certain medical procedures such as intubation produce aerosol, increasing risk for health care providers.

On March 10, 60 members of a choir rehearsed in the state of Washington. None were symptomatic. They did not share music and distanced themselves. 45 members became ill, 28 tested + for COVID19, 2 died. It is likely all 45 who are symptomatic have COVID19 (there is a 37% false negative rate for nasal swab PCR test, 28/45=62%, very close to expected # of positives if all 45 have the virus.)

SENSITIVITY TESTING COVID 19.png

Those without symptoms should be tested, they are likely carriers.

If they all had been wearing masks transmission rates would probably have been lower.

As described in a previous post, an advisory letter from Stanford ENT Surgery Dept., warned about highly contagious circumstances in the OR during ENT surgery. In one case all 14 personnel who entered and left the OR contracted COVID19 despite wearing PPE including N95 Masks. Multiple reports of deaths among ENT and eye surgeons who work close to the nose have been reported from other countries.

These examples and many more suggest that there is a continuum between droplet and aerosolization and both may be present. Although not completely protective, masks would decrease the viral load associated with an exposure. A lower load of virus would be less likely to overwhelm the immune system. COVID 19 is also called SARS-COV-2.droplets vs aerosol.png

The virus enters human cells by attaching to a specific protein on the cell surface. These proteins (ACE2) are in high concentrations in the NOSE.entry at nose with high ACE recpetors.png

 

virus lock and key.png

There is no discrete safety with a distance of 6 feet. That degree of separation is just a guideline. A forceful cough or sneeze might project droplets much further.

Baerosol and droplet projection.png

Based on these considerations MASKS4ALL might help contain this virus AND flatten the curve with greater efficiency.

THIS WEBSITE PROVIDES INFORMATION FOR EDUCATIONAL PURPOSES ONLY. CONSULT YOUR HEALTH CARE PROVIDER FOR MEDICAL ADVICE.

Eat clean, drink filtered water, love, laugh, exercise outdoors in a greenspace, get some morning sunlight, block the blue light before bed, engage in meaningful work, find a sense of purpose, spend time with those you love, AND sleep well tonight.

Doctor Bob

 

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out /  Change )

Google photo

You are commenting using your Google account. Log Out /  Change )

Twitter picture

You are commenting using your Twitter account. Log Out /  Change )

Facebook photo

You are commenting using your Facebook account. Log Out /  Change )

Connecting to %s