Posted on 10/29/2014 11:35:53 AM PDT by varyouga
take the time to google :multiphase turbulent buoyant cloud” and see that the CDC is full of it
M. tuberculosis is carried in airborne particles, called droplet nuclei, of 1– 5 microns in diameter. Infectious droplet nuclei are generated when persons who have pulmonary or laryngeal TB disease cough, sneeze, shout, or sing. Depending on the environment, these tiny particles can remain suspended in the air for several hours. M. tuberculosis is transmitted through the air, not by surface contact. Transmission occurs when a person inhales droplet nuclei containing M. tuberculosis, and the droplet nuclei traverse the mouth or nasal passages, upper respiratory tract, and bronchi to reach the alveoli of the lungs
Airborne droplet nuclei
Airborne droplet nuclei develop when the fluid of pathogenic droplets (1-5 µm in size; micrometre = one-thousandth of a millimetre) evaporates. They are so small and light they may remain suspended in the air for several hours. Thus, they may also infect persons entering a room which has been left by a patient long ago. Also, airborne droplet nuclei can be widely dispersed by air currents. Tuberculosis, chickenpox, measles and possibly also influenza may be transmitted this way.
Yep, nothing but CYA
That poster very clearly says that Ebola is NOT airborne.
This is what the CDC and WHO have always said, because that is what the scientists and physicians who are familiar with Ebola have observed for the last 40 years.
Ebola is spread by direct contact with infected bodily fluids. Droplets are a form of direct contact. Ebola is NOT airborne.
Don’t try to make the poster out to say the opposite of what it says.
Everything has to be ‘dumbed down’ to suit the 47%.
Droplets fall to the ground almost immediately. The only way to get exposed to Ebola from droplets is to be within their trajectory path.
Airborne particles are very tiny, dry out quickly, and can remain in the air for 2 hours. Plus, they can be moved by air currents some distance from their source--you don't need to be in the same room as a sick person to catch an airborne disease, you can catch it from walking by an open window. Ebola viruses are too large to fit into those small particles, and do not survive being dried out.
Hmm, I would have included you in the post I just made, but I did not see the question in time.
Droplets fall to the ground almost immediately. The only way to get exposed to Ebola from droplets is to be within their fall trajectory path. That is, within 3 feet of their source, where you would intercept them before they hit the ground.
Airborne particles are very tiny, dry out quickly, and can remain in the air for 2 hours. Plus, they can be moved by air currents some distance from their source—you don’t need to be in the same room as a sick person to catch an airborne disease, you can catch it from walking by an open window. Ebola viruses are too large to fit into those small particles, and do not survive being dried out.
The droplets that are large enough to carry infectious doses of Ebola virus are heavy enough to fall almost immediately, typically within 3 feet. The small droplets that can travel through the air typically dry out very quickly—the Ebola virus does not tolerate being dried out—and are too small to carry infectious doses—some are smaller than the virus.
Influenza and cold viruses are about 1/10 of the size of the smallest Ebola viruses.
They aren't being refused protective gear, they just aren't wearing it for no reason, you don't wear it unless you are dealing with Ebola patients.
Again you are mistaken and ignore quite a bit (unclear why).
1. Ebola survives in the cold and certain surfaces.
2. And it survives MONTHS in humans who are allegedly “cured”.
3. And you have ignored the animal reservoirs
which are about to develop and grow.
4. And where is the data showing filoviruses are “larger”
than the droplets. That is nonsense.
So that’s where CDC’s 1 meter rule comes from. Thank you!
10mm suspended droplet? This excerpt has some unit problems. um, micro, maybe?
Well I read a billion of them can fit into a centimeter drop of blood which sounds pretty damn small to me. Plus these nurses in Dallas who got it, they said only their neck was exposed, so what did this guy Thomas Duncan do, sneeze on their necks and then they rubbed their necks with their hands and put it in their mouths? Maybe, but I tell you that sounds pretty unlikely. Aren’t they completely disinfected from head to toe then they take a shower? This is two nurses who got infected from this guy.
Rain drops are between 1 and 50 microns in diameter.
Nebulized aerosol droplets are 2 to 20 microns.
The filamentous Ebola, stretched out —which it
need not be— is 0.9 microns.
The post said “Smaller droplets (less than 50 mm diameter)” I suspect they meant 50 microns, 50 mm is a whopping big aerosol, what I’d call “rocks” when I was working BioWatch programs. I have binoculars with 50mm apertures.
Bookmark.
I am neither mistaken, nor do I ignore anything. I do not bother, however, listing off reams of data that are not pertinent to the actual question being asked.
1. Ebola survives in the cold and certain surfaces.
That is strictly laboratory data, measured in controlled conditions, and I have discussed that at length in other posts. If you want to know whether Ebola viruses are stable in situations where someone could actually be infected, you have to study the virus in those conditions. The only study that even comes close to answering that question was by Bausch et al., and it showed that virus was not found on surfaces unless they were visibly soiled, and even then, the virus was not viable (not infectious). In actual practice, surfaces that an Ebola patient might have touched are disinfected, and if objects cannot be disinfected, they are destroyed.
2. And it survives MONTHS in humans who are allegedly “cured”.
It is known that virus takes weeks to clear from some bodily fluids. How long this actually takes is an open question. In the Bausch paper, infectious virus was found in semen 82 days after first symptoms--not quite 3 months. But all patients had completely eliminated virus after 400 days. Obviously, this is a potential means of transmission.
3. And you have ignored the animal reservoirs which are about to develop and grow.
The virus has always been in an animal reservoir, probably bats. It is not about to "develop and grow"; the issue is not that it has always circulated in the reservoir, it is that bats and humans are inhabiting the same areas. Ebola and Marburg have probably always caused small outbreaks, even though they were only discovered a few decades ago.
4. And where is the data showing filoviruses are “larger” than the droplets. That is nonsense.
A filovirus is 80 nm in diameter and anywhere from about 900 to 14,000 nm, or 0.9 to 14 micrometers in length. Airborne particles generated by sneezing, coughing, etc., are smaller than about 5-10 micrometers. The average size of such particles is smaller. So, even if virus were present in respiratory secretions (if they contain blood, virus could be present), very few virions would fit in a particle. Furthermore, such particles dry almost immediately, which kills the virus.
Thanks for the ping!
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