CDC admits Ebola can be passed to others by sneezing


#1

By Cheryl K. Chumley - The Washington Times - Wednesday, October 29, 2014

The Centers for Disease Control and Prevention — which has been downplaying the contagious aspects of Ebola — has now quietly admitted via a poster on its website that the virus can in fact be spread by sneezes.

“Drops spread happens when germs traveling inside droplets that are coughed or sneezed from a sick person enter the eyes, nose or mouth of another person,” the poster reads, the New York Post reported.

But this is a far cry from what the CDC has previously insisted, said Meryl Nass, with the Institute for Public Accuracy in Washington, D.C., the New York Post said.

“The CDC said it doesn’t spread at all by air — then Friday they came out with this poster,” she said, the newspaper reported. “They admit that these particles or droplets may land on objects such as doorknobs and that Ebola can be transmitted that way.”

Ms. Nass also said: “If you are sniffling and sneezing, you produce microorganisms that can get on stuff in a room. If people touch them, they could be [infected],” the New York Post reported.

And it’s not like the germs in the droplets don’t have staying power.

Rossi Hassad, a professor of epidemiology at Mercy College, said the droplets could stay active for a day, the New York Post reported.

“A shorter duration for dry surfaces like a table or doorknob and longer durations in a moist, damp environment,” he said, the newspaper reported.

(Source)


#2

10 April 2014

It is common knowledge that when we cough or sneeze, we should cover our mouth and nose with a tissue to prevent germs from becoming airborne. Now, new research from the Massachusetts Institute of Technology suggests this instruction is more important than ever; they found that droplets from coughs or sneezes can travel up to 200 times farther than previously thought.

According to the research team, including John Bush, professor of applied mathematics at MIT, the droplets that are produced when we cough or sneeze are accompanied by “gas clouds” that enable the droplets to travel greater distances.

The study has recently been published in the Journal of Fluid Mechanics.

To reach their findings, the researchers used a combination of high-speed imaging of coughs and sneezes, laboratory simulations and mathematical modeling. This allowed them to analyze the fluid mechanisms behind coughs and sneezes.

The team found that, contrary to previous beliefs, each droplet from a cough or sneeze is connected through interaction with a gas cloud.

Past research has suggested that larger drops of mucus travel farther than smaller drops because they have more strength behind them. However, the investigators of this most recent study found that when droplets merge with the gas cloud, their trajectory is altered.

“If you ignored the presence of the gas cloud, your first guess would be that larger drops go farther than the smaller ones, and travel at most a couple of meters,” says Bush.
"But by elucidating the dynamics of the gas cloud, we have shown that there’s a circulation within the cloud - the smaller drops can be swept around and resuspended by the eddies within a cloud, and so settle more slowly.

Basically, small drops can be carried a great distance by this gas cloud while the larger drops fall out. So you have a reversal in the dependence of range on size."
The MIT video below shows the gas cloud carrying droplets as a person sneezes:

Coughs and sneezes travel farther than you think - YouTube

Droplets travel much farther than previous estimates

The investigators found that, compared with previous assumptions, droplets from coughs and sneezes travel much farther.

Droplets that are 100 micrometers in diameter were found to travel five times farther than past estimates, while droplets 10 micrometers in diameter were found to travel 200 times farther. In addition, the team found that droplets less that 50 micrometers in size are often able to stay airborne long enough to enter ceiling ventilation units.

According to the research team, a cough or sneeze is a “multiphase turbulent buoyant cloud.”

Study co-author Lydia Bourouiba, assistant professor in the Department of Civil and Environmental Engineering at MIT, explains that the gas cloud encourages surrounding air into it, which causes the cloud to grow and mingle with the droplets.

“But as the cloud grows, it slows down, and so is less able to suspend the droplets within it. You thus cannot model this as isolated droplets moving ballistically,” she adds.

Now that the researchers have uncovered more information as to what happens when we cough and sneeze, their next step is to find out what happens to pathogens in the droplets carried by the gas cloud.

The team plans to focus on “fluid breakup” - a process responsible for the formation of pathogen-containing droplets that allow infection transmission.

“We’re trying to rationalize the droplet size distribution resulting from the fluid breakup in the respiratory tract and exit of the mouth,” explains Bourouiba. “That requires zooming in close to see precisely how these droplets are formed and ejected.”

But until the underlying mechanisms of fluid breakup are uncovered, one thing is clear: keep a tissue handy at all times.

Written by Honor Whiteman

Source:
Medical News Today


#3

Oh here comes winter and flu season…his WILL end in a pandemic…just watch. I promise you we are on the verge of the end of life as we know it…and that happens when the schools and work close and martial law comes in…


#4

I didn’t realize that this is “new.”

You can catch it from all bodily fluid, if I’m not mistaken. When you sneeze and you don’t cover you mouth, you will get droplets of mucus/saliva on things. :shrug:


#5

TRUE, but the CDC has not yet until now said it so bluntly. And to me, what i said in post above yours was not really new either.


#6

Yeah, I think most of us already took this information for granted. The only thing “new” is that the CDC has acknowledged what everyone already knew. What I’m unclear about is how much water vapor the human body naturally gives off. I mean, if you were, say, sharing a tent with an infected person the entire inside of the tent would be contaminated and dripping condensation on you, right? To what extent does this same phenomenon occur in buildings and buses and wherever else? Are people going to start wearing surgical gloves because walls and doorknobs could be potentially be coated with traces of viral material?


#7

This is a bit overly dramatic, I think. The flu itself is more contagious than ebola according to the CDC.


#8

Two first-line defenses are needed. One is frequent hand washing with soap and water. The second is not touching your eyes, nose, or ears with your unwashed hands.


#9

According to the cdc, this can spread though sneezes and doorknobs and such, so pretty much exactly like the flu…


#10

At this point, thats pretty much all we can do.


#11

From my understanding, you have to have symptoms of Ebola to transmit it. There is no threat during the “incubation period.” You don’t have to have symptoms of the flu to be contagious.

Most healthy adults may be able to infect other people beginning 1 day before symptoms develop and up to 5 to 7 days after becoming sick. Children may pass the virus for longer than 7 days. Symptoms start 1 to 4 days after the virus enters the body. That means that you may be able to pass on the flu to someone else before you know you are sick, as well as while you are sick. Some people can be infected with the flu virus but have no symptoms. During this time, those persons may still spread the virus to others.

Via CDC.

So, it isn’t pretty much like the flu.


#12

The flu also kills more people each year than ebola.


#13

Except, of course, where the latter is widespread.


#14

Not this year…has the flu, in 2014, killed near six-seven thousand people? And in such HORRIBLE deaths? Id MUCH rather die of flu than ebola.


#15

I think we all realize this.
I also think that’s it’s not wise to purposely spread an attitude panic.
Just sayin’


#16

Its probably a good idea to start wearing gloves !:thumbsup:


#17

I’m trying to provide some reality and balance against the “move along, nothing to see here” MSM narrative. And I’m providing facts. Isn’t there a rule against personal attacks on CAF members? I have a feeling that we are going to start hearing more about this in the MSM starting the day after the elections.


#18

It takes a while for the CDC to compile that information so the number of flu deaths for 2014 aren’t available. According to the CDC, influenza and pneumonia (I guess they combine them because they are both related respiratory illnesses) accounted for over 53,000 deaths for 2011.


#19

Precisely. Influenza consistently ranks around the #8 leading cause of death in the United States. Further, the 1918 Spanish Flu pandemic was one of the greatest pandemics in world history. Influenza is a FAR more dangerous illness because it is thousands of times more common and far easier to catch.


#20

Then why are all the extreme precautions for Ebola necessary such as what we see in the picture in the OP? Are you saying that these healthcare workers are overdoing it with these precautions? We never see anyone going to those extremes to prepare for dealing with someone with the flu. After those healthcare workers are done dealing with the Ebola, they have to walk through a trough of bleach, be sprayed down with bleach, and then burn the suits after taking them off. They burned all the contents of the apartment for the guy who died in Dallas, TX from Ebola.


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