Free Republic
Browse · Search
News/Activism
Topics · Post Article

Skip to comments.

CDC Poster Admits Ebola Can Be Spread Through Air And Contact of Contaminated Objects
Center for Disease Control ^ | 10/27/14 | CDC

Posted on 10/29/2014 11:35:53 AM PDT by varyouga

CDC Poster Admits Ebola Can Be Spread Through Air And Contact of Contaminated Objects

I wanted to save and post here before it gets "corrected"


TOPICS: Crime/Corruption; News/Current Events; Politics/Elections
KEYWORDS: cdc; ebola; ebolalies; ebolatransmission
Navigation: use the links below to view more comments.
first previous 1-2021-4041-6061-70 next last
To: varyouga

take the time to google :multiphase turbulent buoyant cloud” and see that the CDC is full of it


41 posted on 10/29/2014 2:41:52 PM PDT by smoky415 (Follow the money)
[ Post Reply | Private Reply | To 1 | View Replies]

To: CharlesWayneCT
Our key findings are as follows. The turbulent multiphase cloud plays a critical role in extending the range of the majority of pathogen-bearing drops that accompany human coughs and sneezes. Smaller droplets (less than 50 mm diameter) can remain suspended in the cloud long enough for the cough to reach heights where ventilation systems can be contaminated (4–6 m). A droplet of diameter dD10 mm evaporates in 0.027 s, during which it would fall a distance of approximately 0.08 mm at a settling speed of approximately 3 mm s􀀀1. It would thus clearly remain suspended in a cough or sneeze cloud metres away from the cougher. Indeed, the cloud model presented in this study predicts that the range of droplets of diameter d 6 100 mm would be extended by a factor of 5 to more than 200 as d decreases from 100 to 10 mm. Moreover, following fallout from the cloud, such small droplets or their associated droplet nuclei can be resuspended by ambient air currents that usually have speeds of the order of 1 cm s􀀀1 (e.g. Melikov & Kaczmarczyk 2012). The ambient conditions also influence the buoyancy of the cloud and so the range of contamination of its suspended droplets. Changing the buoyancy from summer to winter indoor conditions can result in a variation of the range of deposition of the order of metres for the relatively large droplets (diameter d > 50 mm) to dozens of metres for the smallest droplets and droplet nuclei (diameter d < 10 mm). We note also that droplet evaporation can enhance the cloud buoyancy, increasing its vertical momentum and thus the chances of the cloud reaching the ceiling and contaminating the ventilation system.
42 posted on 10/29/2014 2:41:52 PM PDT by smoky415 (Follow the money)
[ Post Reply | Private Reply | To 29 | View Replies]

To: CharlesWayneCT

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


43 posted on 10/29/2014 2:41:52 PM PDT by smoky415 (Follow the money)
[ Post Reply | Private Reply | To 28 | View Replies]

To: DouglasKC

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.


44 posted on 10/29/2014 2:41:52 PM PDT by smoky415 (Follow the money)
[ Post Reply | Private Reply | To 38 | View Replies]

To: smoky415
“take the time to google :multiphase turbulent buoyant cloud” and see that the CDC is full of it”

Yep, nothing but CYA

http://www.washingtonsblog.com/2014/10/sneezes-can-travel-8-feet-cdc-says-ebola-droplets-can-travel-3-feet.html

45 posted on 10/29/2014 2:50:58 PM PDT by varyouga
[ Post Reply | Private Reply | To 41 | View Replies]

To: varyouga

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.


46 posted on 10/29/2014 4:15:09 PM PDT by exDemMom (Current visual of the hole the US continues to dig itself into: http://www.usdebtclock.org/)
[ Post Reply | Private Reply | To 1 | View Replies]

To: terycarl

Everything has to be ‘dumbed down’ to suit the 47%.


47 posted on 10/29/2014 4:18:15 PM PDT by lee martell
[ Post Reply | Private Reply | To 40 | View Replies]

To: GrandJediMasterYoda
I don’t understand this, they say it has to be in droplets but then they say it isn’t spread through the air but from what I read they said it can survive up to 6 days outside the body, that it doesn’t need to be in droplets so isn’t that “airborne”? Well I guess we’ll find out after the election when the ball drops and we get the real number how many are infected, after all as we have seen with Benghazi, Democraps getting elected is more important.

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.

48 posted on 10/29/2014 4:46:06 PM PDT by exDemMom (Current visual of the hole the US continues to dig itself into: http://www.usdebtclock.org/)
[ Post Reply | Private Reply | To 3 | View Replies]

To: BuffaloJack

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.


49 posted on 10/29/2014 4:49:50 PM PDT by exDemMom (Current visual of the hole the US continues to dig itself into: http://www.usdebtclock.org/)
[ Post Reply | Private Reply | To 7 | View Replies]

To: DBrow

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.


50 posted on 10/29/2014 4:58:36 PM PDT by exDemMom (Current visual of the hole the US continues to dig itself into: http://www.usdebtclock.org/)
[ Post Reply | Private Reply | To 31 | View Replies]

To: stars & stripes forever
no protective gear.

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.

51 posted on 10/29/2014 6:19:16 PM PDT by ansel12
[ Post Reply | Private Reply | To 39 | View Replies]

To: exDemMom

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.


52 posted on 10/29/2014 6:58:16 PM PDT by Diogenesis (The EXEMPT Congress is complicit in the absence of impeachment)
[ Post Reply | Private Reply | To 48 | View Replies]

To: exDemMom

So that’s where CDC’s 1 meter rule comes from. Thank you!


53 posted on 10/29/2014 7:15:27 PM PDT by DBrow
[ Post Reply | Private Reply | To 50 | View Replies]

To: smoky415

10mm suspended droplet? This excerpt has some unit problems. um, micro, maybe?


54 posted on 10/29/2014 7:28:56 PM PDT by DBrow
[ Post Reply | Private Reply | To 42 | View Replies]

To: exDemMom

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.


55 posted on 10/29/2014 7:32:05 PM PDT by GrandJediMasterYoda (Not all Muslims are terrorists but all Muslims are potential terrorists.)
[ Post Reply | Private Reply | To 48 | View Replies]

To: DBrow

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.


56 posted on 10/29/2014 7:51:37 PM PDT by Diogenesis (The EXEMPT Congress is complicit in the absence of impeachment)
[ Post Reply | Private Reply | To 54 | View Replies]

To: Diogenesis

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.


57 posted on 10/29/2014 8:11:30 PM PDT by DBrow
[ Post Reply | Private Reply | To 56 | View Replies]

To: varyouga

Bookmark.


58 posted on 10/29/2014 8:15:05 PM PDT by Pajamajan ( Pray for our nation. Thank the Lord for everything you have. Don't wait. Do it today.)
[ Post Reply | Private Reply | To 1 | View Replies]

To: Diogenesis
Again you are mistaken and ignore quite a bit (unclear why).

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.

59 posted on 10/29/2014 8:58:12 PM PDT by exDemMom (Current visual of the hole the US continues to dig itself into: http://www.usdebtclock.org/)
[ Post Reply | Private Reply | To 52 | View Replies]

To: Smokin' Joe

Thanks for the ping!


60 posted on 10/29/2014 9:12:26 PM PDT by Alamo-Girl
[ Post Reply | Private Reply | To 10 | View Replies]


Navigation: use the links below to view more comments.
first previous 1-2021-4041-6061-70 next last

Disclaimer: Opinions posted on Free Republic are those of the individual posters and do not necessarily represent the opinion of Free Republic or its management. All materials posted herein are protected by copyright law and the exemption for fair use of copyrighted works.

Free Republic
Browse · Search
News/Activism
Topics · Post Article

FreeRepublic, LLC, PO BOX 9771, FRESNO, CA 93794
FreeRepublic.com is powered by software copyright 2000-2008 John Robinson