By

Ryan Jaslow /

CBS News/ October 9, 2012, 2:58 PM

"Brain-eating" amoeba kills 10 in Pakistan: How rare is it?

A close up photograph of Naegleria fowleri, an amoeba that is known to attack the central nervous system.

A close up photograph of Naegleria fowleri, an amoeba that is known to attack the central nervous system. / CDC's Public Image Library

A "brain-eating amoeba" is concerning international health officials following the deaths of 10 people in Karachi, Pakistan's largest city.

Musa Khan, head of the World Health Organization's Disease Early Warning System in Pakistan, said the deaths occurred from March to September. The deadly infection is caused by the amoeba Naegleria fowleri, which mostly lives in warm, unclean bodies of fresh water.

Khan said municipal authorities launched a campaign in the area to ensure the supply of clean water to residents, while health officials are carrying out a public awareness campaign to educate and guide people and local doctors about the disease. No other cases have been reported in other parts of Pakistan.

"There is no need to panic over these deaths," Khan told the Associated Press. "There is a remote chance for the spread of this deadly disease."

8 Photos

Brain-eating amoeba: How to stay safe from Naegleria fowleri

Naegleria fowleri resides in fresh waters, where the amoeba eats other microbes like bacteria found in the sediment at the bottom of lakes and rivers.

The rare but often deadly infection the amoeba causes is called primary amebic meningoencephalitis (PAM), according to the Centers for Disease Control and Prevention. Once the amoeba enters the nose, it travels to the brain where it causes PAM. Infection typically occurs when people go swimming or diving in freshwaters.

To reduce risk of getting the infection while swimming, people should hold their noses shut, use nose clips or keep their heads above water while swimming in freshwater and avoid stirring up sediment, the CDC said. The only certain way to prevent a Naegleria fowleri infection is to refrain from water-related activities.

People cannot be infected by drinking contaminated water, but U.S. cases have been reported among people using nasal irrigation, including some neti pot users.

The amoebic infection is considered rare in the U.S., having struck 32 people from 2002 to 2011. Only one person out of 123 known infected individuals in the U.S. from 1962 to 2011 has survived.

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14 Comments Add a Comment
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Zackieseed says:
Fresh catkins and dried bark is an antibiotic activity aginst may strains of bacteria including Staphylococcus aureus and pseudomonas aeruginosa. As well as Ameoba Infestation.
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jhadfin says:
It is known here in Texas,quite a few of the PAM deaths in the U.S. has occurred here,but agreeing that not much info on this "rare" form of meningitis.
This amoeba lives in dirt or sediment and is activated by warm water above the temp. of 82 degrees F,thrives especially at 114 degrees F.
It is a death sentence because many doctors are not educated in this for of meningitis so when they do a spinal tap they usually look for viral or bacterial meningitis not amoebic meningitis so almost all cases are identified post-mortem. Also 80% are males,and young male children. You could be in infected water with 20,000 people and only 1 may be infected. That is why it is rare.
Very cruel people on here bashing the Paskitans,it is a horrible and painful death and occurs anywhere in the world,to the ignorant people who like to bash look up this PAM and find out where it occurs most,you will be surprised.
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tverney says:
Must be Obama's fault, has to be.
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Notmikecook says:
The depth of indecency of the commenters above is shocking. In whose world is it permissible to mock the death of another human?

This site needs a more active moderator if people who post here have such poor self-moderation.
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kawefjkasekludnasebf replies:
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I'm not sure what sheltered location you have been living in, but here in America, I have been exposed to jokes about people's deaths all my life.
john-27 replies:
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A lot of Americans don't really care about other people. What matters most to them is themselves. That's how America was founded in the first place, they killed Native American Indians to get the land.

Maybe when MIKECOOK317 gets cancer, then he'll learn to quit joking about other people. LOL. That's about the only time that they'll respect others, when they're not here any more.
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mikecook317 says:
Maybe more Korans would help LOL
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mikecook317 says:
How about spending some of that nuclear weapon money on water purification systems and an adequate electric grid instead of arming for some futile and largely imaginary conflict with India?
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kawefjkasekludnasebf replies:
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I'm not sure how much treatment is needed to eliminate this amoeba from the water supply, given that it is found in US water supplies also. The article failed to point out that this amoeba is a much greater problem in Pakistan due to the use of nasal irrigation as a religious ritual.
Lerianis4 replies:
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Nasal irrigation as a religious ritual? And they don't use distilled water like my parents and I do for that? Dumb, very very dumb.
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akibeel says:
If there's a brain eating bacteria in Pakistan it must be starving to death...
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lifeduringwartime replies:
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Good one! Now everyone in Pakholistan, the drinks are on me!
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MrLagg says:
A mild form of the bacteria seems to have infected pretty much everybody in Pakistan, judging from the way they conduct themselves.
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Lerianis4 replies:
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How do they 'conduct themselves' that is in any way different from any other nation in the world?

Answer: There isn't really any difference until you get into religious differences.
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